equatorial platform drive

However, the installation video covers this well and it is a simple matter of holding the motor against the scope, taking some easy measurements and then marking the 4 needed holes to mount the motor. The Ecliptica Pro tracking platform performs as if your Dobsonian was placed on a driven equatorial mount giving much greater stability at high magnifications. by Walt Hamler. In a tangetnt drive, the motor drives a threaded rod, which pushes a shuttle along, which in turn pushes the platform. You can check to see how your bearings are rotating long before you complete the drive. Found inside – Page 102In July 1999 , Albert was building a Poncet equatorial platform for his 16 - inch Meade which required a sidereal drive and a visitor blew up his CCD camera which needed fixing . In return for fixing these , he bought me a Snappy video ... The platform was built prior to the opposition of Mars in 2007 to allow me to use my undriven 222mm Dobsonian scope to image Mars that opposition. German Equatorial German Equatorial Hybrid AZ-EQ German Equatorial Payload Capacity (lbs) 22 44 30 30 Mounting Saddle V-style D- & V-style V-style V-style Motor Type Stepper Stepper Stepper Stepper Belt Drive Included Polar Scope Mount Head Weight (lbs) 9.65 38.2 16.9 21 Tripod Weight (lbs) 12.5 16.5 13.4 12.5 Found inside – Page 218Some experienced observers even let new telescope drives run continually for up to 24 h to help “iron out” any unevenness in ... Refractors used by amateur astronomers are almost exclusively placed on German equatorial platforms in the ... My Equatorial Platform . The two main methods of driving the platform are through direct drive or tangent drive. an equatorial platform drives from one side of a conical section to another. Location. 5 seconds, even. The cables providing 12 volt power, from a small rechargeable lead acid battery and to and from the hand held control box, are colour coded RCA connectors  - old stereo sound cables - The Illuminated Finder Scope and Laser Finder - both described in previous IceInSpace articles, and the cooling fan are all powered from the same source with suitable voltage regulation. But set a Dobsonian on an Equatorial Platform and … However, the Dobsonian has one major drawback -- no motor drive. An equatorial platform is a specially designed platform that allows any device sitting on it to track on an equatorial axis. Soon after finishing a 10" Dobsonian earlier this year, I came to realize that I missed the tracking ease of an equatorial mounted telescope. Found inside – Page 46Telescope manufacturers solved the problem long ago with a device called an equatorial mount and clock drive, ... But if you're an occasional star shooter, here's a low-cost star-tracking platform that's fairly easy to build yourself, ... This document will contain the basic design choices, sources, explanation of the containing files for my attempt at making an equatorial mount. This gives equatorial tracking to anything sitting on the platform, from small cameras up to entire observatory buildings. This is easy to do. The pitch is 20 tpi, which is close to 1 mm per revolution, representing a total movement of 2mm, (approx) which shows the need for accuracy in manufacture of the two curved runners. Drive: Rear wheel drive: Wheels and Tires: 6.5Jx16 F 215/60/R16 R225/60/r16: Propulsion Type (marine) Single GIBBS Amphibians proprietary HSA Water Jet: Lights: Road and Marine Navigation Lighting: E&OE: Additional Features: N/A: N/A . All elements of the equatorial platform had to be carefully layed out and machined to prevent interference, at any latitude the telescope is likely to operate from. That's how simple it is - you can build one for yourself. Replace one of the roller bearings with … Now I'm thinking was Shane asking in jest ? Page 1 of 3 - Drive motors for equatorial platforms - posted in ATM, Optics and DIY Forum: I would like to build an equatorial platform. Two of the points were aligned on a polar axis while the third was a jackscrew actuator to drive the platform. Building an Equatorial Tracking Platform. It was the first real test of the platform (outside my back yard). Use of a larger telescope is also possible providing it remains within the 30kg load limit. I wonder if a similar system could be made with water? Platform Drive SlipStream GoTo Drive . It worked but have moved on to a different tracking system. Screw Drive is very accurate if you take your time during the platform build phase. turned on the equatorial platform drive and now I was ready to observe the moon and sketch. seems to be a good idea. I knew of two past methods used by amateurs: Norman James’ floating equatorial tracking mount and Adrien Poncet’s equatorial platform, which had just been invented. SkyStopper also has easy to use tuning functions for … (I'm aware of a couple of vendors of lower-cost platforms but they are DIY kits or require finishing of the plywood etc.) The 0.05 uf capacitor on pin 2 and 6 of the NE556 oscillator, requires changing to 0.0056, otherwise the circuit is built as shown. Telescopes and Deep Sky by Reiner Vogel. The altitude drive motor must be installed so the capstan on the motor is very close to the altitude bearing. As this motor turns it causes the top rocking plate (and the telescope that sits on it) to move equatorially. Gain 360 degree visibility and get the most out of your EHSQ data with our comprehensive BI platform. Some prefer to call it a Poncet drive system, while others just call it an equatorial drive platform for Dobsonian tele-scopes. convenient as any reflector on an EQ mount with an RA drive. I then broke it up for firewood when I brought my GOTO mount. The top board of the platform is a free unit, just sitting on the four bearings and held from moving sideways by the drive pin, which, if disengaged from the threaded drive shaft is free to move either way. Last year it occurred to me that I could also use the equatorial platform with an 11" S-C tube assembly if it were held in a Dobson-type altitude bearing fixture. It all began with the purchase of a Toucam digital imager and processing the AVI images in Registax. I chose the Warren Peters design, which would accommodate the existing drive unit without any modifications. Go anywhere portability, as the Watch House Equatorial Platform weighs only 18lbs and is easily carried in 2 pieces, taking less than 5 minutes to set up and align in the field. might try to make one. Thu, 30 Jun 2005 23:06:55 GMT: Bob Cuberl #2 / 6. Notice the 3d printed phone holder attached to the eyepiece. PWM DC Motor Speed Control, by G. Forrest Cook. I am not expecting much - I'd be thrilled with 10 second subs. An equatorial platform is a specially designed platform that allows any device sitting on it to track on an equatorial axis. your own Pins on Pinterest The angled plate on the right holds the freely rotating rollers that bear on the similarly angled south sector of the top board. ZEbbEDY, For that reason it's really an escapement rather than a drive. For a 6-8" scope (the sweet spot for quasi-beginner, portable reflectors) the platform would likely It was developed from the lighter Ecliptica platform and carries Dobsonian telescopes up to approx. Choices in this category will be randomly displayed in either their original order, or in a reverse order. The first is to place holes of equal size at … filter spectra. 16" f/4.5 dob. I've made one. Currently, commercial-quality Poncet equatorial platorms are size and cost effective only for fairly large Dobsonian scopes. Wherever you point, you're tracking - smoothly, precisely - without losing stability, ease of operation or portability. It was fun to make, and a joy to use for ten years and more . Found inside... can be used without additional optical aid to image sky phenomena from a fixed tripod or small equatorial platform. ... Computer-Aided Telescope (CAT) This usually takes the form of a small computer that plugs into the drive system ... To overcome this I have fitted a spring loaded platform lock that locks the top board of the platform from moving, while allowing the scope to be rotated. March 26, 2014 in DIY Astronomer, anyone made one of these before, a box and an inner tube, looks doable, Looks interesting but I'd feel very deflated if it didn't work :-). You have gotta love the pure simple idea behind that. The completed platform shown in the Image 1 is made with 3/4″ plywood and weighs 18 pounds. Toms SpicaEyes Platform Drive Telescopes Large-apertureAluminum Telescope on an Integrated Aluminum Equatorial Platform. This is my home-built equatorial platform on which I mount my 222mm and 444mm Dobsonians to allow me to carry out digital video imaging of planets. Like the Go-To drive method, it maintains the low, stable centre of gravity of the Dobsonian design. If one could stop the Azimuth movement, assuming Mike’s method as described above took care of the declination, for a period of 30 to 40 seconds, I would be able to capture the full selected image of the moon with 300 to 400 frames. Hi Tom, I have been enjoying one of Tom Osypowski's Equatorial Platforms for about 6 years with my Obsession 15" for both high power planetary visual, piggy back film astro and focal … An equatorial platform or equatorial table is an equatorial telescope mount in the form of a specially designed platform that News & Offers: Ultra-Portable Design : Pictures Links: David Lukehurst: David Lukehurst. but this will surely drop from the top to the bottom as the tyre inner tube deflates. Found inside – Page 68... metres Universal joint pivot Motor Screw drive Swivelling wheels ( on underside of top plate ) Inclined plane : angle of inclination 90 ° - 0 where is the observer's latitude North Figure 3.3 . An equatorial platform for a Dobsonian ... The electronic drive assures smooth accurate tracking. Found inside – Page 219Equatorial. Mounts. Serious Mars observation requires a telescope to be mounted on a sturdy platform with one axis ... Equatorial clock drives run at a 'sidereal' rate, enabling celestial objects that are centered in the field to remain ... Notice the grey colored gear attached to the motor. The Ecliptica Light platform permits the use of all popular models of Dobsonian telescope with apertures up to 10" and a maximum weight of 30kg. Its contact point moves towards or away from the pivot (cone apex) as it rotates (awkward, requires longer rollers). Found inside – Page 121... without very complicated computer-driven motors or a fairly uncommon accessory known as an equatorial platform. ... A good 6-inch Newtonian on an equatorial mounting, with drive, can be obtained for a few hundred dollars (or pounds) ... This permanent full time Automotive Service Technician job from Unlimited Performance & Exhaust is offering $30.00 to $40.00 hourly (to be negotiated) for … After shooting for a while, you’ll notice that the drive gear needs to be reset. My platform is going to be a VNS type platform. 2016 drive update for the 28-inch scope. Found inside – Page 174Equatorial. Mounts. Serious planetary observation requires a telescope to be mounted on a sturdy platform with one axis ... Equatorial clock drives run at a 'sidereal' rate, enabling celestial objects that are centred in the field to ... Stable equatorial platform - motorized tracking for your Dobsonian telescope up to 305 mm aperture and for spotting scopes and cameras on photo tripods - ideal for comfortable observation and even for simple astrophotography. Want to change your eyepiece without loosing the observed object? I'd been frustrated by the lack of ability for my Zhumell Z10 10″ Dobsonian reflector telescope to track the night sky. Found inside – Page 1093Thus , the azimuth transformation resolver causes the pickoff signal to drive the correct gimbal regardless of the heading . ... The pitching motion will have a vertical component and the rotation of the stable platform about the ... Look up "equatorial platform" and you will find scads of information. The Dob scope is weighty and beyond my years to lift on and off the proposed platform, so a new movable base had to be designed and the equatorial platform would be an integral part of it. Astronomy and Sky Website of Martin Lewis. The drive shaft turns approximately twice in 40 seconds. Found inside – Page 25Jë , + cė , + K , FIGURE 3 FIGURE 2 RATE - LOOP TESTING SINGLE - AXIS PLATFORM TESTING RATE LOOP ELECTRONICS ... N REBALANCE ELECTRONICS REBALANCE CURRENT REBALANCE CURRENT EQUATORIAL PLANE TABLE DRIVE REBALANCE CURRENT PLATFORM RATE ... Cons: • Platform specific, code is not easily transported to other devices/platforms. An equatorial mount telescope is one equipped with a clock drive that keeps the equatorial axis of the Earth, known as its right ascension, in synchronized motion with the perpendicular axis of the sky, known as its declination. No need to tune it with a knob to get it to follow the Stars, Sun or Moon. EQUATORIAL PLATFORMS About Our Platforms Picture Gallery of Telescopes on Platforms ... Equipment used was a Dobson SkyVision 318mm on Dual-Axis Equatorial Platform, a powermate x5, an ASH Atmospheric Dispersion Corrector, LRVB Astronomik and R+IR Baader filters, and a Basler acA640-100gm camera. Found inside – Page 90... axis filter Platform's Z drive axis torque motor Earth rate compensation generator Platform's Y drive axis torque motor ... -2 torque motor drive system Y torque motor drive system Z torque motor current Base Equatorial plane Fig . A friend who had used a YG2738 12v DC geared head motor for a model train turntable suggested using it for its high torque and low RPM. the hiss drive does indeed drop but presumably also as part of the same conical section, just vertically rather than horizontally - it makes no dofference of course. Drive rollers. Your name . Found insideOne way to visualise how an equatorial platform moves is to imagine a cone lying on its side with its centre axis (polar axis) aimed at the north ... This does not pose problems for a drive system mechanically coupled to the platform. We have placed cookies on your device to help make this website better. The method used is not new and has been used by numerous Dob enthusiasts to drive their platforms, the difference being the method I chose to build it. The ground board, bearings, and drive mechanism of an equatorial platform. An equatorial platform, or EQ platform for short, is a squat, flat, motor-driven table that sits underneath the Dob base and gradually pivots the scope at the exact rate needed to counteract the apparent motion of the stars. I also use a DSLR with a 2x barlow. Can anyone point me to a reasonably … It is well presented and appeared to be easy to make. It works very well at Canadian latitudes, thanks to the arrangement of bearings. Screw Drive is … The drive will run for approximately an hour before needing to … Equatorial Platform Completed The "drive" system of the equatorial platform. A small adjustment to the controller and the image stopped central to the computer screen. This is the designed and 3D printed part used for direct system drive. I used  IRF 540N. You can also choose to have your answer choices consistently reversed across all questions by enabling the Consistently reverse the choice order for all questions with this randomization option selected setting.. The picture on the left below shows this addition. Wheel kits are available to allow the telescope to remain on the platform and stored when not in use. This sketch is more of an impression of the moon rather than an attempt to achieve a level of accuracy. The equatorial approach. Author with Hiss Drive at the 1985 RTMC I built the Hiss Drive shown here with a hand saw, hammer and screwdriver from scrap wood. The motor has lived up to his recommendation and was first made with a direct connection to the threaded drive shaft. My observing buddy, Gregg Blandin, is producing a low-profile all-aluminum equatorial platform. While building the pulse system controller, a star test was made using a simple voltage reduction, 100ohm pot and a 2.5 ohm 5 watt resistor, the motor voltage was reduce to bring the shaft RPM down to one revolution in 15 seconds, which proved to be too fast. The platform itself is well constructed and obviously built by a craftsman. This turned out to be easy and very successful. The last picture is the completed platform and scope. Here you see the main mechanics and motor of the equatorial platform. Can my scope be kept on the platform when not in use? but this will surely drop from the top to the bottom as the tyre inner tube deflates. I would be grateful hear what others have used on their platforms and for any specific recommendations.ThanksRoger The entire telescope and platform can be rolled out and lowered off … Location: Manchester. I feel this modification is very important. Found inside – Page 78The equation of time. equatorial platform A device that allows an alt-azimuth-mounted telescope (especially a Dobsonian) to track ... Semi-exploded view of an inclined-plane equatorial drive platform equatorial telescope mounting ... Looks interesting but I'd feel very deflated if it didn't work, You need to be a member in order to leave a comment.

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