Friction Drive Telescope Mount

Move the tube to the edge so that an approximate location of the centre of gravity is found. It has a 220LB payload capacity and yet weights only about 50 lbs. It is based on a system of ball bearings rolling between two surfaces while housed within a rotating bushing. For each axis, use one knob to move fast or slow — a little correction or a big sweep. Since the tube is screwed to the Rockerbox (mount), this is one of the most stable Dobson available. , this telescope is still portable enough to be taken to dark skies, and has 89% more light gathering power than an 8" telescope and 40% more than the 9. Levenhuk Customer Service: Levenhuk Strike 80 NG Telescope is a better choice due to its accessory set and large aperture. The setting circle for Right Ascension and Declination is fully functional. The motions are reasonably smooth, the mount’s extruded aluminum legs are quite steady with such a lightweight tube. The special wear resistant design maintains performance over time. Mirror cells, upper cage assemblies etc. Based on our Friction Drive System (without gears) is the perfect solution for amateur or professional astrophotographers working in the field and for small to medium observatory use, operated locally or remote. It boasts some key feature distinctions which make it stand out from the crowd. This system is renowned for high precision and reliability. Attach the included EQ-3M Telescope Drive's precision mini-motor onto the AstroView EQ Mount to track celestial objects automatically. I use a CG-5, Celestron's equivalent to the Eq5 for a 6" refractor which is OK on calm nights but with even a fairly moderate breeze I can't use high powers with it. 2 YOKE BASE 31 6. ) Our other telescope is a Meade 8 inch Schmidt-Cassegrain. 857 inches in diameter (D) is assumed. Ultra-Light Conversions. Type: Equatorial. depending on the intended use. This describes where version is to provide a cheap, the telescope is slung between stable platform for larger the lines of the fork of the mount. Smooth-operating hardened steel gears. The mathematical model of the LAMOST telescope mount drive control system is established and the fuzzy sliding mode control theory is put forward to contrast with traditional PID control and ordinary sliding mode control, which is realized by Matlab/simulink simulation. Linear Telescope Equatorial Mount No wear, no frictions! No wearing effects since no relevant frictions occur. System performance matched to mount and motors selected. all the weight of the telescope is inboard (ie. Telescope Mount and Optical Tube Assembly. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. The mount is the actual tripod and the wedge is the device that lets you attach the telescope to the mount. During this time I have learned a great deal about the genius of the Clarks, in particular George Basset Clark, whom I believe is responsible for the design of our 8¼-inch telescope’s mount and drive systems. The amazing unguided tracking accuracy of the LighTrack is in its own league. All you have to do is attach your camera to the Orion EQ-1 Equatorial mount and tripod with the included 1/4"-20 threaded adapter, then align the. ) The azimuth friction drive also allows you to move the telescope around by hand without unlocking any clutches. inside the fork) (actually it is singly inboard). QHYCCD - QHY183M Monochrome CMOS Camera with QHYCFW3S-SR-6 Filter Wheel Combo Kit QHYCCD QHY183M Monochrome CMOS Camera The QHY183 is a one-inch, 20 Megapixel back-illuminated COLDMOS color camer. But all in all, the mount and the telescope are in quite a good shape. New Listing iOptron SkyTracker Pro Camera Mount with Polar Scope - (Mount Only) - #3322. Obermair follwing a design by R. " These are not words one hears applied to a goto smooth-tracking EQ mount. From the Factory the friction drive is adjusted fairly tight meaning the mount can only be turned by the internal motors. This thesis describes the servo control system which was developed to control the motion of the telescope. TELESCOPE MOUNT DESIGN 27 6. The friction of the friction drive can be adjusted. Specs: Mount. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large. 5 arc seconds in 5 minutes and +/- 3 arc seconds in 1 hour. 5 GROUNDBASE 44 6. A 55 tooth gear was tapped to drive the 1/4-20 rod. The generic failure mechanism has been discussed ad nauseam on the pages of MAPUG (2) and many other internet-based telescope user groups, and stems from the use of tiny plastic components and encoders in the gearbox, whizzing around at up to 14,000 RPM, to slew heavy telescopes on a mount originally intended for 20cm aperture tubes. But static friction is always greater than dynamic friction, isn't it? Yes, that's true. Telescope mount features dual slow-motion controls and 360-degree azimuth adjustment, for easy manual tracking of celestial objects for extensive viewing Adjustable-height tripod (32. The mount is designed to carry 100 kg (this is enough for a 500 mm catadioptric or a 200 mm refractor). Direct drive telescope mounts are not a new idea, and are commonly found on professional observatory telescopes and very expensive high-end telescope mounts. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large. The telescope mount, as shown in figure 1. It features variable speed for coarse and fine corrections as well as a friction clutch for manual adjustment on some models. Making a GEM telescope mount suitable for GOTO and astrophotography and near-unattended operation is extremely daunting. I would assume that they required goodly torque, but obviously don't have numbers. Every time I move the mount I must redo it. Normally the parking position is when the balance weights point downwards and telescope pointing towards North pole (or South pole). The telescope must be in balance first ! Starting with the RA axis: Lock the DEC clutch and loosen the RA clutch, hold the telescope it can move away fast !. (However, two of mine don’t!) The camera will then track the stars and so ‘star trailing’ will not be present in the resulting images. It includes an AC powered synchronous clock drive motor and declination clamp. Be sure the telescope adapter is tightly fastened to avoid flexure at the camera or eyepiece. Furthermore, the whole setup is pretty light at about 14 pounds. Please note that these specifications are sub-ject to change without notice and stated for the Losmandy GM 8 mount with the standard accessories. The primary drive mechanism is a 304 stainless steel friction drive (11" diameter) The polar shaft is 5. Most telescope mount uses a set of spur gears to reduce motor speed and then a worm wheel for the final reduction. The mount comes with several patented features and a flexible modern control. This sensor has very high QE, and very low (0. The sturdy equatorial telescope mount and adjustable tripod features fine manual adjustment for tracking and focusing on celestial objects. This exceptionally compact device comes with a Velcro belt for attaching to a telescope mount or tripod. The SynScanTM AZ hand control allows you point your telescope at a specific object, or even tour the night sky at the touch of a button!!. with an average positioning accuracy <20 "and a tracking accuracy of about 1"/15 min. Specs: Mount. Similar to Dashboard Friction Mount Cradle on eBay. The new AstroTrac 360's advanced friction drives and optical encoders deliver even better-unguided tracking performance than the AstroTrac TT320X-AG. CGX Equatorial Mount and Tripod: For eight years, Celestron s workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. GARMIN Portable Friction Mount. The design of this unique product is based on the following important concepts. DobSTUFF Workshop. To fit an OTA, tube rings and blocks are required to suit your OTA size. For each axis, use one knob to move fast or slow — a little correction or a big sweep. Mount prototype, the engine is a direct drive engine type, located at the bottom left, at the end of the shaft. There are a few exceptions of overpriced/underperforming mounts, but once you get over $10k for a mount (you did ask for the BEST), just look for the most expensive. Mobile high-end telescope mount with unique friction drive SEM SCANNING OPTICAL INSTRUMENTS PROTOTYPES Matrix, features and more details: www. It is the most lightweight and portable of the three size models. ) and master polar alignment of this new friction drive mount made by Gemini Telescope Design in Hungary. The combination of the reflex site and low-friction Dobson mount makes for a very intuitive telescope that the kids greatly enjoy using. In terms of large-scale optical telescope, the design of multi-motor friction drive is obviously advantageous than that of single motor direct drive on the expense for manufacture of motors. Integra Field Rotator-Microfocuser. Even at high magnifications, you can move the rockerbox mount around quickly and easily to point at any target in the night sky!. Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. 5 arcsec/seconde. DIY mounts for astronomy. This one had a full german equitorial with a friction brake on the south end of the polar axis. Camera Tracker Package - Split the AstroTrac 360 German Equatorial or Single Arm mount and you have two of the best tracking camera mounts on the planet. The field lens and the eye lens are both contained in the telescope's eyepiece. 8, 2013 Title 29 Labor Part 1910 (§ 1910. Our own version of the popular maual mount system for large tubes - ideal for deep sky observation Contact our Sales Team by Email: [email protected] The friction drive on the declination axis was a mistake. First to use thin etched virgin teflon. AstroTrac 360 punches above its weight of just 5 kg (11 lb) in GEM configuration. txt) or read online for free. Jan 9, 2020 - Explore jordiblasco's board "Home Obsevatory" on Pinterest. By that we mean you need to think about the intended use. Friction drive and bearing of tube and fork are original Pressberger type. 96 Nm in the declination (dec. 7) Attach 4mm key hex onto long screw and thread through hole and screw into backside of motor mounting plate. Gemini Telescope Design E. It includes an AC powered synchronous clock drive motor and declination clamp. To enable the telescope to be slewed by hand, a wing-nut inside the driven roller-skate wheel provides friction control. Capable of carrying a 75 pound instrument load, it will. Normally it's: "Big. Apr 20, 2017 - #equatorial platform #telescope #dobsonian. Orion U-Mount. Page 1 of 2 - Friction drives. fric offers the utmost precision available from a pure friction drive without the need for expensive and vulnerable encoders and electronics. Get answers to your questions in our photography forums. Depending how configured, a friction drive can be more efficient than a hub. The L-600 is ideal for the CDK24 and can hold up to 300 lbs. The technology normally used in this class of telescope is well understood in the telescope community and has been successfully implemented in numerous projects. Evidently the friction drive was sufficient, and reliable. A shortened mount profile creates a more compact mount that is easier to carry and assemble but also improves the mounts central gravity boosting load capacity. Telescope mount features dual slow-motion controls and 360-degree azimuth adjustment, for easy manual tracking of celestial objects for extensive viewing Adjustable-height tripod (32. TELESCOPE MOUNT: • 47. Telescope Drive. 25″ EdgeHD telescope and Advanced VX German equatorial mount package; EdgeHD’s aplanatic, flat field Schmidt-Cassegrain optics result in pinpoint stars to the edge of today’s largest imaging sensors and widest eyepieces for best optical performance. When I get around to it, I will replace it with a gear drive. The SynScanTM AZ hand control allows you point your telescope at a specific object, or even tour the night sky at the touch of a button!!. The Advanced Polaris Telescope Mount has slow motion RA and DEC controls for manual control. 52 mm usable field for larger format sensors. Custom made telescope mount for Meade 16" ACF SCT, showing slewing, guider pulse testing, and some images from first light. Celestron's CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. Unfortunately the price of a direct drive telescope mount is far outside the budget of most amateur astronomers (on the order of $15,000 USD or more). 45 arcsec/step (micro stepping) Both telescope axes must include a friction clutch for manual positioning; Isolate the drive mechanics from the GEM with a Sorbothane vibration dampening material. Part number 91530 This all new design with 55lb payload will handle any medium size imaging rig. Currently, friction drive with ultra-low speed and high accuracy is widely used in large astronomical telescopes. The only other coverage of a friction-drive mount I recall in ATT was Oliver Penrice's report on the Mesu Mount 200 in Volume 6, Issue 3 (2012), Issue 3,. The mount comes with several patented features and a flexible modern control. MMT = multiple mirror telescope. An equatorial telescope system with direct-drive PMSMs is used as basis for the analysis. The optical tube’s pivots rest on Teflon™ bearing pads in the yoke of the rocker box. The mount has been reconfigured into an equatorial, with new bearings and a friction drive on the right ascension axis. Geometry: A 7:1 "gear" reduction final drive for a telescope using a final drive pulley of 20-inches in diameter and a drive pulley of 2. This German Equatorial mount tracks the stars with the highest precision in its category. This allows the mount to be adjusted to accommodate large changes in eyepiece (or camera) weights. astro-imaging. (TDM is an alternative solution to guiding. It works fine, except that the azimuth friction drive has some "dead" spots where it will slew over then stop and just spin the motor without actually slewing the mount. Marine Navigation Box Telescope, Compass, Spirit Level, Alidade Etc For Sale Online. Initially, the motion was a bit jerky as there was some friction between the wood and the bolts, but a little oil on the bolts has mostly eliminated the 'sticking'. Custom made telescope mount for Meade 16" ACF SCT, showing slewing, guider pulse testing, and some images from first light. motor, which runs in either direction as desired. The shaft diameter is 140mm. I share the first results, images taken with a 400 mm F8 RC telescope at 0,64"/pixel. Here we are concerned with the telescope. The positive side effect: we can also turn the required encoder mountings directly on the new friction wheels. To drive the mount we choose friction drives for their very low PE and rock solid operation. fric Friction Drive Equatorial Mount based on our unique Friction Drive (without gears) is ideal for astrophotographers working in the field or from an observatory, remote or local. 5 GROUNDBASE 44 6. In addition, the drive stiffness and control bandwidth must be sufficient to guarantee the telescope positioning in the presence of wind or other mechanical perturbations. 3 mm optimised image circle with pinpoint stars to the far corners of even the largest astroimaging sensors. The mount is the actual tripod and the wedge is the device that lets you attach the telescope to the mount. Meyer and E. The new AstroTrac 360's advanced friction drives and optical encoders delivers best unguided tracking performance!. A motor is the mechanical or electrical device that generates the rotational or linear force used to power a machine. The camera is now called the Automated Patrol Telescope (A. Mobile high-end telescope mount with unique friction drive SEM SCANNING OPTICAL INSTRUMENTS PROTOTYPES Matrix, features and more details: www. The following example shows the theoretical expected performance and limitations of a metal band drive used to drive a telescope. The mount has two parts, the rocker box and the ground board. Build yourself a working Equatorial Mount for under $50. ball-bearing horizontal adjustment, allowing easy pointing at and tracking of objects. Making a GEM telescope mount suitable for GOTO and astrophotography and near-unattended operation is extremely daunting. ) and also including the popular Chinese clones of the Vixen mounts, such as the Synta & Jinghua CG-5, EQ-4, HEQ-5, HD, LXD-55, LXD-75, etc. I would assume that they required goodly torque, but obviously don't have numbers. With minor exceptions (friction wheels, drive worms, cylindrical gears) all mechanical and optomechanical components - including the main mirror - have been manufactured by me in my own workshop! Rudolf Pressberger's "Austrian Precision Telescope Mount (ÖPFM) ". The following example shows the theoretical expected performance and limitations of a metal band drive used to drive a telescope. The camera is now called the Automated Patrol Telescope (A. It can be decomposed into two components dry friction and viscous - friction. On the first night I messed up polar alignment because I did not purchase the polar scope (I was too cheap and did not want to spend. Fully programmable to match telescope characteristics for retro-fitting. Apr 20, 2017 - #equatorial platform #telescope #dobsonian. Before you attach the optical tube, make sure that the declination and right ascension clutch knobs are tight. 5 arcseconds) Unguided exposures possible for up to 300 second exposures. Capable of carrying Celestron's largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large telescopes, imaging. The precise balance of the telescope lets you freeze the location, or adjust it with a slight nudge. Truss Telescopes. 50 deposit at the order time, rest, including options and shipping will be paid before the delivery (~30 days after the deposit) via a Paypal invoice. Sometimes I worked intensely on the DIY telescope mount project, and sometimes the project laid untouched for months and months. Avalon Instruments: The M-uno Fast Reverse telescope mount is a portable single arm fork mount devoted to deepsky imaging in the capacity range up to 20 kg (44 lb). Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. An analysis of friction nonlinearities and a demonstration of the necessity in eliminating static friction are provided. The field lens and the eye lens are both contained in the telescope's eyepiece. It works fine, except that the azimuth friction drive has some "dead" spots where it will slew over then stop and just spin the motor without actually slewing the mount. The entire drive mechanism is otherwise my design. Friction will be reduced to about one-third of the original friction. Gemini Telescope Design G53F friction drive german equatorial mount This German Equatorial mount tracks the stars with the highest precision in its category. Gemini Telescope Design E. Friction torque is reactive torque and occurs predominantly in the bearings of axis supports of telescope mount. After some poking and googling I was able to determine that the mount uses a bipolar stepper motor to compensate for Earth's rotation. Remove the straight drive worm to let the shaft run freely. Attach the included EQ-3M Telescope Drive's precision mini-motor onto the AstroView EQ Mount to track celestial objects automatically. Lie the telescope tube (with an eyepiece and finderscope mounted) on a table. Equatorial mounts tend to be massive (less portable), expensive, complicated, and have the characteristics of putting the eyepiece of Newtonian telescopes in very hard to access positions. The Event Horizon Telescope (EHT) collects light from the black hole using a small number of telescopes distributed around the Earth. It requires some minor sanding to get things to fit. Motor assembly. astro-imaging. Celestron CGX-L 9. The camera is now called the Automated Patrol Telescope (A. Do you want to be able to locate over. 5) uses a mirror instead of the glass lens, which is located near the rear of the telescope tube. (This mail from my Telescope FAQs Page explains how the gear ratios were determined. The new AstroTrac 360's advanced friction drives and optical encoders delivers best unguided tracking performance!. An M5 screw (not shown) tightens the clamp around the telescope. Mount and tube were built by E. The new AstroTrac 360’s advanced friction drives and optical encoders deliver even better-unguided tracking performance than the AstroTrac TT320X-AG. The telescopes are usually balanced; such that you just need enough torque to get the scope moving. If there is too much friction, the telescope is difficult to move to center an object in the filed of view. It works fine, except that the azimuth friction drive has some "dead" spots where it will slew over then stop and just spin the motor without actually slewing the mount. Full text of "MSFC Skylab Apollo Telescope Mount" See other formats. Very small guiding correction impulses may remain left unnoticed until the drive train has built up enough torque to cause a sudden „jump“ (an arc second-sized correction overshoot). Gemini Telescope Design G53F friction drive german equatorial mount This German Equatorial mount tracks the stars with the highest precision in its category. The telescope mount, as shown in figure 1. 4") diameter 18 mm thick plywood disk with the following add-ons: Three 32 mm track rollers on which the drive board will rotate, positioned exactly above three 76 mm (3") diameter feet. Sooner or later an upgrade was going to happen. Dob mount short for Dobsonian. A star's visibility depends on aperture: the telescope's light gathering power. for both axises and (de)coupling mechanism for the two servo motors, it is an improvement on it's predecessor. Celestron's CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. But all in all, the mount and the telescope are in quite a good shape. First loosen hexagonal socket. But the Rainbow RST-150H (Image 1) really is a one-handed telescope mount that's super light. This is a NEW BYERS 11-1/8" diameter -- 442-tooth Telescope Drive, With Spring-Loaded Slip-Clutch, Bored To Fit A 3. While the first of these two mounts was still equipped with a somewhat idiosyncratic gear motor with belt drive, at second mount, the original Pressberger self-made gearbox unit was used in both axes now. And like HEIDENHAIN, ETEL builds its linear and torque motors, along with motion systems, on a foundation of superior knowledge and technical. Attach the Orion EQ-3M Dual-Axis Electronic Telescope Drive to a compatible Orion or Celestron equatorial mount and you can track celestial objects automatically, without needing to touch. fric Precision Friction Drive German Equatorial Mount E. The L-Series comes in three models; the L-350 capable of holding 100 lbs; the L-500 designed for the CDK17/20 that can hold payload of over 200 lbs. A belt driven motor minimizes backlash but remains smooth even when handling a large telescope. In equatorial mode this out-of-balance condition causes the scope to try to swing toward the west. AWR have advised on motorizing all types of telescopes and mounts with mirrors up to 36 inch diameter. The present invention is directed to a disc based alt-azimuth telescope mount for use with any of a variety of existing telescopes. It's all junkbox stuff and telescope leftovers; the focusing mount was the very first one I had bought with my allowance at the American Science Center in Chicago in 1966. The altitude and azimuth axes are supported and located by hydrostatic bearings. July 27, 2018 Title 29 Labor Parts 1911 to 1925 Revised as of July 1, 2018 Containing a codification of documents of general applicability and future effect As of July 1, 2018. This allows the mount to be adjusted to accommodate large changes in eyepiece (or camera) weights. The Alt-azimuth mount is commonly used in affordable telescopes because it’s easy to use. It is based on a system of ball bearings rolling between two surfaces while housed within a rotating bushing. New Listing iOptron SkyTracker Pro Camera Mount with Polar Scope - (Mount Only) - #3322. Friction drive and bearing of tube and fork are original Pressberger type. Potential problems? - posted in Mounts: Hi, I am putting serious thought into purchasing a Mesu Mount 200. Just installed the Orion EQ-1 drive Orion 7826 EQ-1M Electronic Telescope Drive on an Orion Mini EQ-Tabletop Orion. And another note: you may want to rotate the optical tube 180 degrees, so the DSLR is is on the "inside" when the tube is on the east or west of the mount. The motion is smooth and is controlled by a manual friction drive control knob on the side of the fork. The rod end needs to be tapped since it has no threads (my modeling skills are up to making threads yet). Positive locking ratchet pawl brake. This robust field mount was engineered and designed for SCT's, refractors, and Newtonians alike. LARGE TELESCOPES are defined as 14 inch diameter mirrors and upwards and could be on FORK, GERMAN , ENGLISH or other Equatorial mounts with worm, friction or chain drives. fric offers the utmost precision available from a pure friction drive without the need for expensive and vulnerable encoders and electronics. The English mount or yoke mount addresses a problem with the fork mount: the fork itself still experiences an unbalanced load from the telescope, which means the base of the fork must be of heavy construction. GARMIN Portable Friction Mount. Main advantages of a fork are: 1. Power input and accessory ports remain stationary while the mount slews to avoid snags. the ¼ Hitch Mounts advertised elsewhere on this site also use a roller friction drive system. the mount which is caused by inaccuracy of of worm. Note the other dovetail just below the center of the fork (above main picture) for easily separating (dismantling) the entire solid-block polished titanium fork assembly from the lower RA mount assembly. Based on our Friction Drive System (without gears) is the perfect solution for amateur or professional astrophotographers working in the field and for small to medium observatory use, operated locally or remote. It was then mounted on a machined piece of angle iron with adjustments to square the drive-wheel onto the ring. Mount prototype, the engine is a direct drive engine type, located at the bottom left, at the end of the shaft. 25x was the minimum correction speed in v1 model. But, the have to purchase it separately as it doesn’t come with the unit. The TNT motor drive system includes adjustable speeds on both axes and high speed centering. The newly enhanced Mesu e200 Mount is a high capacity, innovative and well priced friction drive mount, benefitting from a precise and mature design. Buy today from FocusCamera. EQ-3M single- and dual-axis computerized drive systems are available separately. The mount and the wedge are there to assist you with a superior viewing session and to keep your expensive telescope safe from a fall. Astrosib telescopes are renowned for their excellent optics. The altitude and azimuth axes are supported and located by hydrostatic bearings. It features the largest aperture in the Inspire family line, and its short tube offers a wider field of view perfectly suited for larger, fainter deep sky objects. Orion U-Mount. Friction will be reduced to about one-third of the original friction. Read the Advanced Polaris Manual here. The world-wide shipping cost is $55 via surface and $95. The focuser is driven by the friction that results when a great amount of pressure is applied by the drive shaft against the drawtube, which in turn is pressed against the drawtube post bearings. Fornax Mounts LighTrack II Review The Fornax Mounts LighTrack II was designed for accurate tracking of the night sky, for long exposure astrophotography projects. System performance matched to mount and motors selected. If you're shooting with a 400 mm camera lens or a small telescope, leave the counterweights at home. The Elevation drive ratio is about 30: 1, while the Azimuth drive ratio is about 35:1. It is the most lightweight and portable of the three size models. The 1000 lb. Also problems can occur when using a poncet mount: when the azimuth bearings have to much friction, it will be possible that the drive sector slides over the driveroller when moving the telescope in azimuth. It has been founded in 1996 (see company history timeline). Getting ready for the solar eclipse in my own backyard! I wanted a sidereal tracking mount for my camera that is fitted out with a homemade solar filter using Baader solar film Baader Planetarium AstroSolar Safety Film Visual, 7. This will ensure that the mount does not move suddenly while attaching the telescope. 5 pounds for us backwards. The first test we made with a 30-cm f4 telescope on G53F Friction Drive Mount was used, ASI1600MM-Cool and L filter. The telescope, located at the Kitt Peak National Observatory, uses an Elevation-Azimuth mount. Different type drive systems, such as worm gear drive, spur gear drive, friction drive and direct drive, which were devised and used in telescopes in the past years, have their own inherent. fric German Equatorial mount and this concept was applied to the MoFoD now. 10 of 10 { width: 200, height: 200, defaultImage: '', layers: '' } 1-800-447-1001 Friction bearings. I would assume that they required goodly torque, but obviously don't have numbers. A belt driven motor minimizes backlash but remains smooth even when handling a large telescope. Friction drives are supposed to be backlash free (if I remember what I read a while back correctly). Orient motor so that threaded hole in motor drive mounting plate aligns with the elongated hole near the top of the recess. All that is needed is to adjust the mount to accommodate for the telescope configuration, and forget it. I expected to use the set screw to secure the motor shaft, but so far it seems that there's just enough friction that the set screw does not need to. 800" diameter 7075 aluminum gear with 180 teeth for incredibly accurate tracking. By comparison, an equatorial mount is essentially an alt-az mount that is tilted to match your latitude, allowing a telescope to track the stars with the addition of a simple clock drive. Most cars use a friction clutch operated either by fluid ( hydraulic ) or, more commonly, by a cable. Attach the Orion EQ-3M Dual-Axis Electronic Telescope Drive to a compatible Orion or Celestron equatorial mount and you can track celestial objects automatically, without needing to touch. This isn't your ordinary altazimuth mount head. The Fornax 100 telescope mount is a heavy duty German Equatorial mount for precise positioning and tracking extremely large telescopes up to about 80-90kg. The equatorial mount GM 4000 HPS is the ideal mount for our 18 inch to 24 inch RC telescopes and Newton astrographs. The Celestron CGX-L Computerized Equatorial Mount is the extra heavy-duty version of the innovative, accurate, and stable CGX! The CGX-L has been designed with an even better load capacity to weight ratio, and is capable of handling an OTA and other astronomical equipment weighing a total of 75 pounds. Small ecological footprint, achieved by using low waste factor tecnologies, like 3D printing, laser and waterjet cutting. Focal Length: 5695mm (approximately f/7) Operational Hour Angle from -5. it was mainly designed by open space agency under open hardware licence as ultrascope plus. Arduino stepper motor controller for a telescope mount. PULSAR 2 based drive. General Specifications. But the concept for the telescope's alt-az mount is the same as your scope. An Eq5 or equivalent is the smallest I would recommend for a 6" telescope. txt) or read online for free. TELESCOPE MOUNT: • 30 in. fric offers the utmost precision available from a pure friction drive without the need for expensive and vulnerable encoders and electronics. Output shaft is driven either by brush torque motor or brushless torque motor. Horry County police say they seized more than $62,000 in cash and 600 grams of heroin in a Myrtle Beach drug bust that landed 5 people in jail. AstroTrac 360 German Equatorial Mount Package. Low yield : drawing lot of current for a slow motion. If you needed 15 W at 10 m/s, then you'll need 1. The SpaceProbe 130ST EQ consists of 24 inch long optical tube design which makes it a versatile telescope for the whole family, and children will love the stunning images of the night sky. Friction drive and bearing of tube and fork are original Pressberger type. The second stage is an internal friction drive. The Orion U-Mount offers a very solid platform for your large binocular, small telescope or even spotting scope, whether you are star gazing or viewing terrestrial objects. All that is needed is to adjust the mount to accommodate for the telescope configuration, and forget it. Every time I move the mount I must redo it. 857 inches in diameter (D) is assumed. prised more mount manufacturers don't deploy friction drives, but there is a lot of inertia in tradition, and tradition weighs heavily in favor of worm drives. Hopkins in Arizona. The concept for Chinese Future Giant Telescope (CFGT) with 30-m aperture has been around for several years, although the requirements for control system are still far from completed and conclusive at this stage. Experience Celestron's best optical perfomnance with EdgeHD’s flat-field and coma-free optics for pinpoint stars all the way to the edge of today’s largest imaging sensors. Friction drives allow you to use a super cool rc motor to drive your bike. Marine Navigation Box Telescope, Compass, Spirit Level, Alidade Etc For Sale Online. Capturing pin sharp stars at 200 mm or more focal length has never been. face finish is to 600 grit and is mirror like, ready for anodizing. The dome that houses the telescope has a diameter of 4. Celestron RASA 11″ telescope and CGX mount package; Rowe-Ackermann 11-inch f/2. OK, it won't be actually the first light, but a brief report from a third night (third use case) when I finally managed to handle the setup (cables etc. mesu-optics. Mount includes: Rocker box, all PTFE bearing surfaces, polymer non scratch screw on feet, declination CNC machined bearing rings. Heavy Duty belt-drive system minimizes backlash while providing smooth motor operation under heavy loads. FORNAX LighTrack Mark II. Stator (right) and rotor engine (left), the two are intertwined rings and mounted directly on the RA or DEC axis, the engine is 210 mm in diameter and provides high torque. Instead of one equatorial axis drive motor, mount two motors so the sphere can be moved in both azimuthal and declination. During this time I have learned a great deal about the genius of the Clarks, in particular George Basset Clark, whom I believe is responsible for the design of our 8¼-inch telescope’s mount and drive systems. It is the most lightweight and portable of the three size models. 5 arcsec/seconde. There is a coupler for a stepper motor to a 5/16 threaded rod. With a suitable telescope mount in hand, securely fasten the mount to the telescope either by screwing it onto the telescope or bolting the mount in place as required. He used CSF32-160 for RA and CSF20-80 for DE. 6 DRIVE ASSEMBLY 46. CGX 1100 HD combines Celestron's all-new state of the art CGX computerized equatorial mount with its acclaimed EdgeHD optical system. Stars, or point sources. Remove the straight drive worm to let the shaft run freely. 5 inch wheel: Finder upgrade: Provide alternate images to CCD from finder: Internal finder with switchable optical path being designed around filter slide: Drive: 1 rpm synchronous motor to 60:1 speed reducer: Shaft directly coupled to drive pinion. The Fornax 100 telescope mount is a heavy duty German Equatorial mount for precise positioning and tracking extremely large telescopes up to about 80-90kg. Slightly more difficult fix:. The primary mirror and cell around which the telescope are from the multi-mirror telescope on Mt. 5 arcseconds) Unguided exposures possible for up to 300 second exposures. 5 arc seconds in 5 minutes, +/- 5. However, the scope's Dec drive gear is a Mathis drive, with its worm mounted in bronze bushings, which I believe will provide more accurate, concentric operation and. It features variable speed for coarse and fine corrections as well as a friction clutch for manual adjustment on some models. Just installed the Orion EQ-1 drive Orion 7826 EQ-1M Electronic Telescope Drive on an Orion Mini EQ-Tabletop Orion. Please specify your requested options in your payment for the deposit. This German Equatorial mount tracks the stars with the highest precision in its category. Buy today from FocusCamera. In star trackers the system to track at sidereal rate usually employs a worm drive on a circular gear ring to rotate the mount head at sidereal rate. First to use anti-friction stippled laminates on bearings (Tweed formica). 2 System operating times 24 6. At one point, I thought about using something like this to drive my telescope mount. The patented Tension Control Handle allows users to add or reduce tension, thereby increasing or decreasing the friction between the optical tube and the sideboards. You just let go and the drive takes over. I already have a 114/900 celestron on a eq1 mount w/motor drive (just like yours). You can also equip the mount with Celestron’s “Logic Drive” for hands-free, motorized tracking. Position feedback comes from low cost incremental encoders, also capstan coupled. of 2012 by a team from OMI, and McDonald Austin/West Texas including the OS and PP staff, and Gordon Wesley from Austin. The main mechanical concept of the mount is left unchanged; i. The telescope has been fully refurbished, re-aluminised, and the old electromechanical drive mechanisms removed and have been replaced with the most modern encoders and computer operations. I started the development of the friction drive concept due to its superior precision and rigidity. The friction wheel was PAPER, compressed between big washers. The Feathertouch focuser with two speed 1:1 and 1:10 reduction and compression rings in both the drawtube and adapter is a $390 option. Very impressive! EdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of view. The Polar Disk Mount is finally ready for my 6" f/7. ball-bearing horizontal adjustment, allowing easy pointing at and tracking of objects. In fact, all the pulleys and the axes rotate on roller bearings, 13 for the RA axis and 13 for the DEC axis that allow to reduce the total friction almost to zero. This one had a full german equitorial with a friction brake on the south end of the polar axis. Buy more powerful motors which can overcome the friction associated with the weight of the telescope. An analysis of friction nonlinearities and a demonstration of the necessity in eliminating static friction are provided. *2nd* Orion AstroView Equatorial Telescope Mount. The new AstroTrac 360's advanced friction drives and optical encoders delivers best unguided tracking performance!. If you're shooting with a 400 mm camera lens or a small telescope, leave the counterweights at home. While the first of these two mounts was still equipped with a somewhat idiosyncratic gear motor with belt drive, at second mount, the original Pressberger self-made gearbox unit was used in both axes now. Exceptional load capacity to weight ratio Additional Aux accessory ports and autoguider port on the Dec axis for better cable management Larger. Kelly Beatty Equatorial Mount Meridian Flip Dec 6 2017 by Larry McNish. Car Phone Holders and Dashboard Phone Mounts. Obermair follwing a design by R. The Orion U-Mount offers a very solid platform for your large binocular, small telescope or even spotting scope, whether you are star gazing or viewing terrestrial objects. The Mesu-Mount 300 is a scaled up development of the Mesu-Mount 200 with 300mm friction wheels and an advanced version of the driving mechanism used in the Mesu-Mount 200. The rubber friction face provides. So, for a telescope, the mount and its control system play an important role during the telescope operation. All azimuth drive systems require a motor drive using either a friction drive or a cog drive of some kind, a control box, a position sensor (encoder), a home sensor and control software. 6 DRIVE ASSEMBLY 46. Mobile high-end telescope mount with unique friction drive SEM SCANNING OPTICAL INSTRUMENTS PROTOTYPES Matrix, features and more details: www. If the D2M Motor Drive Set is installed, and installation is simple, the included DD2 hand controller is normally used to slew the mount and aim the telescope. With other Dobson the tube is attached or placed on the Rockerbox. 3 Elevation clamp block 41 6. The drive system should slew at 80-90 deg. 5 meter aperture, of a scale and focal ratio well adapted both to fibers for a many-fiber spectrograph, and to the pixel size of available large-format CCDs for a time-delay-and-integrate (TDI) imaging survey. However, you need a good solid tripod to carry the weight and take into account the axes of movement of the telescope if you want to use it for observing planets and the like. Detailed photos of the controller, the mount, as well as astrophotographs taken with it are in the link. AstroTrac 360 punches above its weight of just 5 kg (11 lb) in GEM configuration. This single-axis motor drive will make observing easier and more fun, since you won't have to hassle with periodically centering an object in your telescope eyepiece's field-of-view. The new AstroTrac 360's advanced friction drives and optical encoders deliver even better unguided tracking performance than the AstroTrac. The used telescope mount incorporates two PMSMs with 11 pole pairs and a rated torque of 6. The Orion TrueTrack DC drive system provides dual-axis control for high-power viewing and photography with the SkyView Pro mount. The amazing unguided tracking accuracy of the LighTrack is in its own league. 2 System operating times 24 6. Raises mount 2-7/8" off the ground Wheel diameter is 10" Width (at rear wheels) is 32" Length. The altitude bearing. Noisy overnight, especially with the use of stepper motors that can resonate with the telescope mount. As such, it is desirable to provide a telescope system which readily accommodates upgrading of the telescope mount from friction lock mounts to manual worm drives and from manual worm drives to motorized worm drives in a manner which is simple, convenient, and comparatively inexpensive. and SCIENTIFIC AMERICAN 187 TINSLEY LABORATORIES Supplies for the Amateur Telescope Maker. A good example is my 30-inch Cassegrain mount which has a 20" Byers drive in RA, with it's worm mounted in ball-type bearings, which I was surprised to find when I purchased it. Optical principles can also be used in such things as light fixtures. fric Precision Friction Drive German Equatorial Mount E. The L-Series comes in three models; the L-350 capable of holding 100 lbs; the L-500 designed for the CDK17/20 that can hold payload of over 200 lbs. This single-axis motor drive will make observing easier and more fun, since you won't have to hassle with periodically centering an object in your telescope eyepiece's field-of-view. The Orion U-Mount is made of very solid aluminum and provides smooth and confident motion in both altitude (up/down) and azimuth (left/right) axes, thanks to the quality of the low friction bearing surfaces. Every time I move the mount I must redo it. AstroTrac 360 German Equatorial Mount Package. 6 new & refurbished from $225. Page 1 of 2 - Friction drives. uk or Telephone: 01782 614200. With top astro-photography qualified mounts, "goodness" is closely related to cost. telescopes and to have very Where the telescope pivots is the smooth motion in both axes. Rigid dobsonian mounts offer large bearing surfaces to attach drives. When I get around to it, I will replace it with a gear drive. The three pads of carpet help prevent vibration from the drive motor exciting the telescope. In building this mount it required a lot of R and D not seen in the final mount, numerous temporary jigs and mock ups were required to establish the centre of gravity for the base and tipping points and the telescope swing and clearances and the friction required to drive etc etc. Mount Lemmon Sky Center update I have had a hard time posting this month, due to being incredibly busy as well as being limited in my observing time. 5 pounds for us backwards. Attach the included EQ-3M Telescope Drive's precision mini-motor onto the AstroView EQ Mount to track celestial objects automatically. 1 arcsec/seconde. The lightweight altitude-azimuth (Alt-Az) Porta mount can be the heart of an exceptionally portable telescope/mount system. CGX 1100 HD combines Celestron's all-new state of the art CGX computerized equatorial mount with its acclaimed EdgeHD optical system. diameter friction drive in DEC contribute to the stiffness that helps promote smooth tracking and excellent accuracy. EdgeHD virtually eliminates both field curvature and off-axis star coma with many. Alternatively, if manual clutches have been installed along with the drive motors, you can revert to using the manual slow motion controls at any time. New Listing iOptron SkyTracker Pro Camera Mount with Polar Scope - (Mount Only) - #3322. Star Adventurer Astronomy Mount. With minor exceptions (friction wheels, drive worms, cylindrical gears) all mechanical and optomechanical components - including the main mirror - have been manufactured by me in my own workshop! Rudolf Pressberger's "Austrian Precision Telescope Mount (ÖPFM) ". First no tools assembly, no tools primary collimation. The mount comes with several patented features and a flexible modern control. The setting circle for Right Ascension and Declination is fully functional. 10 of 10 { width: 200, height: 200, defaultImage: '', layers: '' } 1-800-447-1001 Friction bearings. , this telescope is still portable enough to be taken to dark skies, and has 89% more light gathering power than an 8" telescope and 40% more than the 9. First to use Baltic Birch/ApplePly plywood construction. The rod end needs to be tapped since it has no threads (my modeling skills are up to making threads yet). Telescope Mounts Standard Features : Accurate tracking is difficult without a proper mount. By the time I added the off axis guider, the filter wheel, focuser, and finally a camera on the scope I lost a lot of sky due to everything hanging off the back. It could shape and figure the mirror in real time. fric Precision Friction Drive German Equatorial Mount E. can also be made to order or just. Power input and accessory ports remain stationary while the mount slews to avoid snags. The Fornax 100 telescope mount is a heavy duty German Equatorial mount for precise positioning and tracking extremely large telescopes up to about 80-90kg. Description JMI Standard Event Horizon Telescope Focuser – Cassegrain. 5 arcseconds) Unguided exposures possible for up to 300 second exposures. Levenhuk Customer Service: Levenhuk Strike 80 NG Telescope is a better choice due to its accessory set and large aperture. Stars, or point sources. Orient motor so that threaded hole in motor drive mounting plate aligns with the elongated hole near the top of the recess. First no tools assembly, no tools primary collimation. The telescope attaches to the mount via a dovetail bar bolted to the bottom of the telescope. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large. The telescope mount, as shown in figure 1. 5 arc seconds in 5 minutes, +/- 5. MOFOD Friction Drive Fork Mount. The top is 24 inches square. 5 pounds for us backwards. It can acquire and track Low Earth Orbit Satellites; and with a maximum slew speed of 20 degrees. Sometimes I worked intensely on the DIY telescope mount project, and sometimes the project laid untouched for months and months. Page 1 of 2 - Friction drives. The CGX 1400 HD combines Celestron's flagship CGX computerised equatorial mount with their largest EdgeHD optical system. The following pictures give an impression of this second telescope:. can also be made to order or just. Since that time, many more astro-imagers and planetarium controlled setups have emerged as backyard telescope technology has evolved. Mount includes: Rocker box, all PTFE bearing surfaces, polymer non scratch screw on feet, declination CNC machined bearing rings. About Celestron CGX Telescope The CGX 800 Schmidt-Cassegrain Telescope features Celestron's premium StarBright XLT coated optics and the all-new state of the art CGX computerized equatorial mount. • 20" Cassegrain telescope in Kepler observatory Linz (friction wheel drive, largely identical with our own telescope, build 1998-2000) • Mount for 20" Newtonian, built by Michael Mross, Lüneburg Germany (friction wheel drive) • 20" Cassegrain telescope by Erich Kowald, private observatory Posiberg in Styria (friction wheel drive,. " These are not words one hears applied to a goto smooth-tracking EQ mount. The friction drive on the declination axis was a mistake. Part number 91530 This all new design with 55lb payload will handle any medium size imaging rig. Our main profile is the design and manufacturing of telescope mounts and accessories. Patent-pending StarSense sky recognition technology uses your smartphone to analyse star patterns overhead and calculate its position in real time. I think I could test the friction drive performance only with the guiding tube installed on the mount. It's styled like a traditional Leica M rangefinder and brings a host of updates to the hugely popular original Leica Q (Typ 116) that was launched in 2015. 25" accessories 9x50 Finder Scope to help accurately. Although there are examples of use of even heavier telescopes up to 100kg, the recommended maximum load is about 80kg for this telescope mount when used for imaging. A pressure plate bolted to the flywheel exerts constant force, by means of a diaphragm spring, on the driven plate. Detailed photos of the controller, the mount, as well as astrophotographs taken with it are in the link. QHYCCD QHY290M Monochrome COLDMOS Camera Back-illuminated (BSI) CMOS Sensor The QHY290 uses an extremely sensitive BSI CMOS sensor, the Sony IMX290. Even a slight breeze can give you big problems with a mount that is too small for the telescope. (This mail from my Telescope FAQs Page explains how the gear ratios were determined. 5 inch wheel: Finder upgrade: Provide alternate images to CCD from finder: Internal finder with switchable optical path being designed around filter slide: Drive: 1 rpm synchronous motor to 60:1 speed reducer: Shaft directly coupled to drive pinion. MOFOD Friction Drive Fork Mount. Variable Friction Brake Detail shown below:. Slightly more difficult fix:. From Figure 1, one can see that the instrumental pole for friction drive consisting of a large diameter disk and a small diameter drive roller provides the stiffest form of gearing. i found it on there website. to connect TDM to the. Equatorial mounts tend to be massive (less portable), expensive, complicated, and have the characteristics of putting the eyepiece of Newtonian telescopes in very hard to access positions. Celestron's CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. Example of a GEM-style equatorial mount made from two D11 drive units, counterweight plate, plus mounting hardware. googlepages. By comparison, an equatorial mount is essentially an alt-az mount that is tilted to match your latitude, allowing a telescope to track the stars with the addition of a simple clock drive. Like the finest focusers that employ similar drive technology, the Half Hitch’s motion controls are instantly responsive, free of backlash, and dead-on precise. The Elevation drive ratio is about 30: 1, while the Azimuth drive ratio is about 35:1. Fine pointing actuation is from direct drive dc motors, eliminating backlash problems. CGX 1100 HD combines Celestron's all-new state of the art CGX computerized equatorial mount with its acclaimed EdgeHD optical system. Offered in Alt-Az or Equatorial configuration. 1000 to end of part 1910) Revised as of July 1, 2013 Containing a codification of documents of general applicability and future effect As of July 1, 2013. Each axis has two identical drive motors coupled to the telescope through steel friction rollers. If you have a telescope, you need a mount! Mounts serve the important job of supporting your telescope and come in three basic varieties: EQ or German Equatorial, Alt-Az or AZ or Alt Azimuth and finally piers which are available in both permanent or portable styles. This model has an exceptionally large image circle of 80mm diameter. This fork arm also contains a 7. Custom Optics and Telescopes. Alternatively, if manual clutches have been installed along with the drive motors, you can revert to using the manual slow motion controls at any time. The used telescope mount incorporates two PMSMs with 11 pole pairs and a rated torque of 6. A Mount for deepsky imaging without the needs of meridian flip. Now let's look at the DiscMount. FORNAX LighTrack Mark II. Very impressive! EdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of view. Since the base is quite spherical, some motor driven friction discs could drive it like an old style computer mouse in reverse. And visually, with a 1/2 degree eyepiece I can slew over 50 degrees and find a star in. About Celestron CGX Telescope The CGX 800 Schmidt-Cassegrain Telescope features Celestron's premium StarBright XLT coated optics and the all-new state of the art CGX computerized equatorial mount. Kelly Beatty Equatorial Mount Meridian Flip Dec 6 2017 by Larry McNish. I've tried opening the thing up and increasing the tension of the friction wheel against the hub, but that didn't seem to help. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. And like HEIDENHAIN, ETEL builds its linear and torque motors, along with motion systems, on a foundation of superior knowledge and technical. The mount comes with several patented features and a flexible modern control. Currently, friction drive with ultra-low speed and high accuracy is widely used in large astronomical telescopes. 15x tracking speed can be used if your mount is extremely calm, e. Kelly Beatty Equatorial Mount Meridian Flip Dec 6 2017 by Larry McNish. The pillow blocks hold skate board bearings. In fact, wonder of wonders, it weighs only 3. 50 deposit at the order time, rest, including options and shipping will be paid before the delivery (~30 days after the deposit) via a Paypal invoice. The Celestron single-axis motor drive runs on a 9V battery, so there are no cords to get in the way. FORNAX LighTrack Mark II. Remove the straight drive worm to let the shaft run freely. With the plastic cover removed, I was able to mount the Meade adapter directly to the metal structure of the telescope’s mount and drive assembly. diameter friction drive in RA and 28 in. with an average positioning accuracy <20 "and a tracking accuracy of about 1"/15 min. Notice that the mount as delivered was not correct. DEC rate = 3. As such, it is desirable to provide a telescope system which readily accommodates upgrading of the telescope mount from friction lock mounts to manual worm drives and from manual worm drives to motorized worm drives in a manner which is simple, convenient, and comparatively inexpensive. Optical Design. Our goal with AstroTrac 360 was to do the impossible: engineer a full‑size experience into the smallest, lightest telescope mount possible. However, astronomical telescope is a large inertia load. This single-axis motor drive will make observing easier and more fun, since you won't have to hassle with periodically centering an object in your telescope eyepiece's field-of-view. All-new ergonomic adjustment knobs with reduced friction for smooth and easy positioning under full loads. I made do with the materials and tools I have, and I'm happy it works! EDIT: It's a bit odd to drive the rotor from the top bearing, but based on my calculations, that force exerted on the drive bearing by the weight of the assembly is about the same as if I had used on of the bottom edge. diameter friction drive in DEC • Steel mirror cell with multiple 12-bolt patterns per KPNO standard • Tracking accuracy: +/- 0. Detailed photos of the controller, the mount, as well as astrophotographs taken with it are in the link. Astronomical telescopes have standard eyepiece tubes, with which one can use eyepieces bought separately from the telescope. Different type drive systems, such as worm gear drive, spur gear drive, friction drive and direct drive, which were devised and used in telescopes in the past years, have their own inherent. Mount Lemmon Sky Center update I have had a hard time posting this month, due to being incredibly busy as well as being limited in my observing time. mount is brushed cast aluminum, aircraft polyurethane painted, with friction drive alt-azimuth controls. The Celestron EdgeHD is an aplanatic flat-field Schmidt optical system designed to produce aberration-free images with pinpoint stars all the way to the edge of the field of view of today’s largest imaging sensors and wide field eyepieces. The friction drive is protected by safety clutches on both axis. Pressberger (University of Vienna and Purgathofer Observatory, Klosterneuburg, Austria). An Eq5 or equivalent is the smallest I would recommend for a 6" telescope. Before you attach the optical tube, make sure that the declination and right ascension clutch knobs are tight. The GTD MoFoD MKII Fork Friction Drive Mount is the ideal solution for demanding applications (public, school, society or professional observatories). fric Precision Friction Drive German Equatorial Mount E. It features the largest aperture in the Inspire family line, and its short tube offers a wider field of view perfectly suited for larger, fainter deep sky objects. A belt drive connects the 55 tooth gear to a 12 tooth gear on the stepper motor. The lens is attached to a black PVC toilet mount flange with a plumbing squeeze clamp exactly for that purpose; miraculously, the enlarger lens was just a little smaller than. There is a coupler for a stepper motor to a 5/16 threaded rod. We are serving amateur and professional astronomers worldwide. I've tried opening the thing up and increasing the tension of the friction wheel against the hub, but that didn't seem to help. DIY Stepper Controller using Arduino. This has advantages. Celestron’s workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. ject to overtake the telescope. PULSAR GoTo Controllers. Do you want to be able to locate over. The pillow blocks hold skate board bearings. High torque motors with better slewing and tracking ability. Mount and tube were built by E.
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