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1100GTO

German Equatorial Mount with

GTOCP4 Servo Motor Drive

Mounts Shipped

Starting in

March 2021

Keypad Optional

Astro-Physics, Inc.

11250 Forest Hills Road

Machesney Park, IL 61115

Telephone: 815-282-1513

Fax: 815-282-9847

[email protected]

www.astro-physics.com

Содержание 1100GTO

Страница 1: ...in Starting in March 2021 March 2021 Keypad Optional Astro Physics Inc Astro Physics Inc 11250 Forest Hills Road 11250 Forest Hills Road Machesney Park IL 61115 Machesney Park IL 61115 Telephone 815...

Страница 2: ...VING SITE 13 Assemble Pier purchased separately 13 Attach Polar Axis Assembly to Pier 13 Latitude Adjustment for 1100GTO German Equatorial Mounts 14 Special 90 Degree Alt Azimuth Position 15 ASSEMBLY...

Страница 3: ...3 Lanyard Post and Bubble Level 33 Warning for Dec Servo Cable 33 SLEWING YOUR MOUNT IN BELOW FREEZING TEMPERATURES 33 AUTO ADJUSTING GEARBOX NO MORE WORM MESHING 34 Checking and Adjusting the Gearbox...

Страница 4: ...ation and for future updated versions of this manual A final note and an apology to our friends in the southern hemisphere Many of the instructions in this manual are written entirely from the point o...

Страница 5: ...Cable tie wraps 1 USB Flash Drive containing APCC Standard PEMPro v3 Software and PDF of Instruction manuals Instruction Manuals and Registration Card Fasteners 4 1 4 20 x 5 8 SHCS for safety backup o...

Страница 6: ...accessories camera computer dew removers etc You may wish to consider CP4 Powerpoles to Alligator Clips CABPPAL For connecting the CP4 Power Cable to battery terminals DC In line Watt Meter and Power...

Страница 7: ...weight 12 9 lb 5 8 kg Optional shaft extension available Weight of mount R A axis polar fork 27 6 lb 12 5 kg Dec axis 15 6 lb 7 1 kg Dec top plate 1 5 lb 0 7 kg Capacity of mount Approximately 110 lb...

Страница 8: ...xtensive individual testing that is performed on each and every mount While the native peak to peak periodic error of your 1100GTO will be 7 arcseconds or less you can reduce it even further to maximi...

Страница 9: ...o this mount It is important to note the need to connect and disconnect the Dec motor servo cable when doing so Control Box Adapter located behind CP4 GTOCP4 Control Box Removal Thumb Screws 2 Declina...

Страница 10: ...onnect the Dec motor servo cable when doing so Declination Motor Gearbox Dec Sighthole Cover Declination Axis Housing Declination Counterweight Adapter Counterweight Shaft Safety Stop Altitude Adjuste...

Страница 11: ...eypad instructions in the Keypad manual These four points are detailed below 1 Latitude and longitude coordinates tell the mount where it is The GTOCP4 will remember where it was when last pow ered do...

Страница 12: ...e 10 After finishing your night s observing or day s solar observing it is best to park the mount into your chosen Park posi tion by pressing 2 Setup then 4 Park Mount Opt and finally choosing the Par...

Страница 13: ...Start Guide 6 Power up the mount and connect with your primary control software Use the primary control software to initialize the mount Start out from the park position chosen in 5 above Your other i...

Страница 14: ...r pier or into the 1100 Flat Surface Adapter 119FSA if are using one 4 Line up the Pier base If the side thru holes in the pier or 119FSA are not perfectly lined up with the tapped holes in the mount...

Страница 15: ...uding from both sides of the bar This will allow you to move the mount fully within the altitude range The slots are positioned at 9 degree increments and the threaded rod has 10 degrees of travel The...

Страница 16: ...reverse the axis and the other to remove and replace the bolts 1 Remove telescopes and counterweights before beginning this orientation change It is also necessary to separate the Dec axis so that yo...

Страница 17: ...ns the two servo cable branches will be attached to the GTOCP4 box at the connector marked motors 1100GTO AE AEL The 1100GTO AE and 1100GTO AEL Absolute Encoder versions of the mount utilize a more co...

Страница 18: ...der mount is pre routed through the R A axis The Dec Servo Cable Y cable of non AE mount will need to be routed through the R A axis by the user Note that there is also a re movable Cable Router provi...

Страница 19: ...late to the axis and lock it in place by hand tightening the two lock knobs You may wish to place and tighten the two 1 4 20 x 5 8 socket head screws that provide additional attachment security It is...

Страница 20: ...le they do not actually need to be set up on a telescope This will also allow you to have an idea about cable length if there are choices to be made Once you have all your devices connected and know t...

Страница 21: ...scope 4 Begin by feeding the cable with the largest connector from the front of the axis to the rear You will need to finesse the cable through the rear Cable Access opening If you are hav ing troubl...

Страница 22: ...by first feeding the cable with the largest connector through the Cable Access opening at the bottom rear of the R A axis You will need to finesse the cable through the opening and up through the cent...

Страница 23: ...1 4 20 x 5 8 socket head cap screws 18 FLAT MOUNTING PLATE FP1800 This plate is 18 long and 7 5 at its widest point in the center The width of the plate tapers to 5 5 at each end Four pairs of keyhole...

Страница 24: ...so that the saddle can be shifted forward or backward depending on whether you are balancing a front heavy or back heavy scope In addition to D style plates it matches well with the Astro Physics 15...

Страница 25: ...ars In order to retain the tilt in feature of the dovetail the sliding bars must have an approximate width at the widest point between 1 65 42 mm and 1 8 45 mm and they must have have a 75 degree beve...

Страница 26: ...lutch Knobs section before attaching your telescope This will give you an idea of how the clutch knobs feel and function Flat and ribbed plates Our flat and ribbed plates are constructed with keyhole...

Страница 27: ...ackward and forward With a well balanced telescope the above tightness of the clutch knobs will be sufficient for all normal conditions of use Now if you proceed to mount up and balance your telescope...

Страница 28: ...ing Precision Balancing Again begin in Park 3 Remember that dangling cables will dramatically change balance and create guiding problems so you ll want to be sure that all cables are carefully secured...

Страница 29: ...r weights to the top of the shaft and try balancing with just the lower lighter weight If you must slide the weights lower as necessary to balance however it is better to add another heavy weight up h...

Страница 30: ...azimuth adjustment knobs one on each side of the mount to center it You must back off the opposing azimuth knob in order to move the other knob in that direction One full turn of the azimuth knob is a...

Страница 31: ...bsite The Keypad startup routine provides two methods The North Polar Calibrate and the Two Star Calibrate These two polar alignment methods though no longer recommended were designed for quick and co...

Страница 32: ...ecause our GTO Quick Star Drift Method begins with altitude Many texts for the classic star drift method begin with the azimuth adjustments When you made your rough alignment earlier you loosened ever...

Страница 33: ...k off the first knob only by the small amount of the adjustment you plan to make Use the graduated markings on the knob to mark your starting and ending points For example if you are already pretty cl...

Страница 34: ...n some observatory situations use a heavy wire to minimize the voltage drop If the power drops below about 10 5 11 volts at the servo terminal the internal computer chips may reset with subsequent los...

Страница 35: ...d scope in line with the R A axis pointing toward the pole 2 Remove the Lever Assembly Cover Grip the cover and pull it straight out 3 Make sure the lever is in its normal position snapped in place pa...

Страница 36: ...he entire motor gearbox is securely fastened to the axis housing There should be a very small amount of front to back rocking that is possible due to the spring loading mechanism but there should be n...

Страница 37: ...ory or at a week long star party then unpark from Last Parked assuming that the scope has not been repositioned manually by hand via the clutches since it was last parked Unpark from a defined park po...

Страница 38: ...ff marks from repeated transport and assembly disassembly Most of the time these marks can be removed with a product like Color Back by Turtlewax automotive product Simply apply with a paper towel and...

Страница 39: ...ded for best performance Do NOT exceed a nominal 18 volt system See the Power Considerations section beginning on page 29 If you also power other equipment CCD cameras dew heaters etc from the same so...

Страница 40: ...parts of the sky Ray Gralak s Pulse Guide will allow you to dial in an exact tracking rate for any part of the sky The Astro Physics Command Center Pro APCC includes tracking and pointing correction...

Страница 41: ...Y axis and he is absolutely certain that Y Dec After much sending of equipment back and forth to our facility it finally is determined that it was the other axis after all that had the problem PLEASE...

Страница 42: ...l know how to fix it Once you know that the mount is tracking in a normal fashion with normal periodic error profile you can go from there to begin setting up your guiding parameters It is not a piece...

Страница 43: ...enter North pause South pause North to center The stars in the resulting exposure should look something like the image to the right The scale might be different but you should see what looks like many...

Страница 44: ...t in the reverse direction It is normal on reversal of direction that there is a slight delay in movement because of backlash If this happens you may wish to increase the pulse count If you see errati...

Страница 45: ...late 2 1 4 20 x 1 2 SHCS for center hole in rings 1 1 4 20 x 3 8 SHCS for safety stop SBV15 15 Wide Profile V Style Dovetail Plate 2 1 4 20 x 1 2 SHCS for center hole in rings 4 1 4 20 x 3 4 FHSCS for...

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