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A discontinued product replaced by the Mach1GTO in 2006. Information posted for information purposes only
Above: Questar Seven Astro telescope barrel (viewed from rear left) with Dewcap threaded onto stored
position, attached to Astro-Physics Model 600E GTO computer controlled German equatorial mount.
The 600E is constructed of high quality components to provide you with years of observing pleasure. The rigid aluminum castings enclose the worm gears and the right ascension and declination motors. Therefore, the drive components are protected from dirt and dust, extraneous wires and gearing are eliminated, and the overall appearance is enhanced. All other parts are machined of aluminum and stainless steel. Astro-Physics avoids the use of any carbon steel shafts or plated-steel fasteners because they will deteriorate with time. This mount will not rust or bind up and will retain its appearance and function throughout the years. Fine-pitch, precision gears are the heart of the drive system. These gears are cut with Class AA hobbs on a highly accurate gear cutting machine. Designed for the utmost in durable convenience, this drive system operates from a portable battery pack or the cigarette lighter of your automobile.
Over the years, Astro-Physics mounts and drive systems have functioned reliably in the coldest environments of Canada, Norway and remote northern Alaska. The circuitry of our controller designs has been proven since the mid-1970's and is comprised of the highest-quality Military Spec. and Aircraft Grade components. Astro-Physics avoids the cost cutting techniques employed in most competing controllers: construction with flimsy, hygroscopic (water absorbing) circuit boards, components rated for indoor use, and poor solder connections. Astro-Physics controllers will stand up to the humidity and temperature extremes common to many observing locations.
Indeed the 600E has been so well accepted that Carl Zeiss selected the original Astro-Physics Model 600E mount head (with metric threading and Zeiss paint) with the brich wood tripod as the standard mount for sale with their premium 40 lb. Carl Zeiss "APQ" 6"f8 Apochromatic refractor telescopes (now discontinued).
This mount has been engineered to work seamlessly with the included Servo "DigitalSky Voice" Go-To Computer Control System. The furnished Keypad controller permits access and control of most desired functions, while the "DigitalSky Voice" software is a terrific observing companion offering many observing ideas and information, and a new level of ease of use for the beginner or the more experienced observer. If you plan to use an IBM-compatible personal computer to control your GTO mount, then you will have lots of fun with this accompanying software.
Right: Model 600E GTO Mount Head West side, with optional 6 and 9 lb. (2.7 and 4.1kg) counterweights, DOVELM Saddle Plate, and Tripod Adapter (178,447 bytes).
Below Right: Diagram of 600E GTO dimensions commonly requested. If the telescope is horizontal and pointing to west or south, then the measurement from the top of the pier to the middle of the cradle plate is 11.75 inches (28.9cm); these dimensions will vary somewhat depending on your latitude. We quote thus for 42 degrees because that is the latitude of the factory, it is also a good average value (144,653 bytes).
|SPECIFICATIONS OF EQUATORIAL HEAD:|
|Worm wheel:||4 inch, fine pitch bronze|
|Worm gear material:||stainless steel|
|Latitude range:||15 to 57 degrees with polar scope; low latitude wedge available|
|Azimuth adjustment:||approximately 17 degrees|
|Setting circles:||Porter Slip Ring design|
|Right Ascension Circle:||10 minute increments, pointer|
|Right Ascension Vernier:||2 minute increments|
|Declination Circle:||1 degree increments, pointer|
|Weight of equatorial head:||27 lbs (12.3 kg).|
|Pier Outer Diameter:||6 inch|
|Pier Wall Thickness:||0.083 inch|
Above: Astro-Physics Model 900 Mount in optional Company Seven ATA case. Case 1 of 2 shown here, with Declination housing (left side shown) with GTO Keypad Controller and Counterweight Shaft (94,326 bytes).