ASTRO-PHYSICS GTOCP3 Manual Download Page 4 | Manualshive

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Summary of Contents for GTOCP3

Page 1: ...ERMAN EQUATORIAL WITH GTO SERVO MOTOR DRIVE Model GTOCP3 ASTRO PHYSICS INC 11250 Forest Hills Road Rockford IL 61115 Telephone 815 282 1513 Fax 815 282 9847 support astro physics com www astro physics...

Page 2: ...2...

Page 3: ...r Alignment 10 Rough Polar Alignment 10 Fine Polar Alignment 11 Methods for fine polar alignment 11 Azimuth Adjustments 12 Rotating Pier Adapter with Azimuth Bearing 1200RPA 12 Standard Pier Adapter 1...

Page 4: ...Cables 21 Accessory Cables 21 Example from International Space Station Amateur Telescope ISS AT Project 21 SLEWING YOUR MOUNT IN BELOW FREEZING TEMPERATURES 23 MOUNT CARE AND ALIGNMENT 24 Mount Maint...

Page 5: ...rt bars handy to keep your eyepieces close at hand Polar axis telescope threads into the base of the polar axis assembly Many users find a polar axis telescope useful for zeroing in on the pole quickl...

Page 6: ...use that even it you don t use it for a few months you will feel at home with the keypad very quickly The 1200 is equally at home in a permanent observatory or as a portable mounting for remote star...

Page 7: ...ument it can be damaged by improper use and handling Please refer to Diagram 2 for an illustration of the mount The parts are labeled so that we can establish common terminology The following terms an...

Page 8: ...s upwards so that the altitude locking knobs are positioned at the top of the altitude slot this is the maximum altitude position Some resistance will be felt with this operation since you are pushing...

Page 9: ...pier you may wish to purchase two adapters so that you can leave them attached permanently These pier adapters can be used with prior versions of the 1200 mount 1200 Standard Pier Adapter part 1200SPA...

Page 10: ...er top and polar axis assembly mating surfaces are clean and free of dirt 3 Place the polar axis assembly onto the pier top adapter so that the center azimuth block fits between the fine azimuth adjus...

Page 11: ...the pier knobs firmly by hand b Rotating Pier Adapter No further tightening required Fine Polar Alignment If you plan to use any of the go to functions of the 1200GTO or do astrophotography you must...

Page 12: ...her knob in that direction Please refer to Diagram 4 Follow one of the alignment methods discussed above in the Polar Alignment section Once your azimuth position has been attained do not tighten the...

Page 13: ...ted that the initial altitude adjustment be done with these bolts hand tight and as you approach the final adjustment point tighten the bolts with a hex key after each movement If you move the axis to...

Page 14: ...6 Thread the counterweight shaft into the Dec axis 7 Remove the hand knob and safety washer from the base of the counterweight shaft Add sufficient counterweights 10 or 18 lb counterweights are purcha...

Page 15: ...a strong rib structure The final result is 1 5 thick 24 long and 7 6 at its widest point The width of the plate tapers to 5 5 at each end A pair of keyhole slots that measure 3 2 between centers are p...

Page 16: ...lutch knob has a 5 32 hex socket for tightening with an allen key With this extra 1 3 turn on each clutch knob the axis axes will be considered completely locked up and you should not attempt to push...

Page 17: ...turn so that the telescope moves freely about the declination axis be careful because if your telescope is significantly out of balance it may swing rapidly in the out of balance direction 3 Position...

Page 18: ...connector from which the two cables emerge to the GTO Control Panel Attach the short part of the Y cable to the R A motor housing and the long part of the cable to the Dec motor housing Lock all conne...

Page 19: ...neously both programs are continually updated with the data from the mount You can watch the screen display of TheSky to see where your telescope is pointing as it slews This is most effective if you...

Page 20: ...of the hex keys from the set included with the mount Lift the box up from the bottom and tilt so that it frees from the dovetail connection Some people have a permanent observatory yet prefer to stor...

Page 21: ...ece reticles power cords for the Pentax 6x7 camera etc As you attach each accessory carefully assess the best position to assure complete movement as your telescope slews from one side of the mount to...

Page 22: ...emover If you look closely you will notice that the two clutch knobs were removed and replaced with special Allen head bolts This allowed the Dec cable to slide easily over the axis in all orientation...

Page 23: ...to lubricate each of the spur gears and their sleeve bearings with a light machine oil When warmer weather returns this can be replaced with a light grease Lubriplate 105 which will reduce the wear fa...

Page 24: ...when the worm turns When these clutch knobs are pressed too tight for long periods of time the Delrin plugs tend to splay outward and expand into the sides of the threaded hole Then they will not retr...

Page 25: ...and cause the keypad to lock up We recommend that you use a large marine battery that is not a gel cell and hook everything up to it before starting up the GTO Or better yet put the dew heaters on a...

Page 26: ...the hole that was drilled into the part and find some object that you can insert We suggest that you use one of your allen head wrenches that is wrapped in masking tape so that you do not mar the fini...

Page 27: ...ighten the R A adapter since you may need to remove it to install the polar axis telescope at a later time 3 If you look into the black encoder housing you will see the encoder itself mounted at the r...

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