Optical Guidance Systems Complete Systems

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Optical System


Primary Diameter 16.0"
Specular Precision 1/25, or better, wave front RMS  
Mirror Substrate Near-zero expansion ceramic
Focal Ratio f/8.4
Image Scale 60.1 arc sec/mm
Tube Diameter 19.5"
Tube Length 48"
Tube Active Cooling 12 V DC fans
Material AL (Mg; XZe Carbon Fiber© available) 
Focuser Tube I.D. 2.7"
Available Back Focus 10"
Secondary Diameter 6"
Sec. Focus Range (electric standard)  5"
Focus Stabilization, w. Al tube Invar 36


OGS-75 Fork

Aux. Instrument Cap. 45 lbs.
Tracking Precision <2 arc sec RMS (after modeling)
Pointing Precision <30 arc sec RMS (after modeling)
R. A. Drive 11.3" 360 tooth worm gear & ball bearing worm
DEC Drive 11.3" 360 tooth worm gear & ball bearing worm
Shafts 4.0" Ø (100mm at R. A.  bearing ends; 55mm at DEC ends)
Motors Five-phase nano-step or servo
Axis Intersection 72" from base of pier (at 40°)
Fork Swing Clearance 16"
Weight (system) 490 lbs.
R. A. Counterweights 2 x 2.5 lbs.
Pier 42" high, typically (custom heights available)
Fasteners 18-8 stainless steel
pctcs_small.jpg PC-TCS is a Personal Computer based Telescope Control System designed for use with moderate to large permanently mounted astronomical telescopes. The software will run on all IBM-class computers.

PC-TCS provides the observer with a highly flexible battery of motion control functions handsomely matching the demands of astronomical observing. As much as possible, system complexity is minimized by the use of a "Menu Driven" user interface that, in most cases, requires only single keystrokes to make the telescope perform complex tasks. Learn more about PC-TCS

And all PC-TCS-controlled OGS telescope systems will script with the integration of this ASCOM compliant operating system. Learn more about ASCOM