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Pre-owned
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Occasionally, OGS will have for sale quality pre-owned astronomical instrumentations. This month you will find the following pre-owned products featured.

Science Center Observatory Closing. Available Immediately!   

RC24-140FN Complete Dome! This 5 year old system is for sale with a 1 Year "Brand New"  OGS performance warranty. This a complete turnkey system is an astronomer's dream.

This systems Features:

    24" Ritchey-Chretien Tube Assembly with invar spacing rods and electronic secondary focus.

    140FT, OGS's top of the line mount with PC-TCS Control System and Nano Stepping motors.

    Complete Dome with Comsoft's dome control system fully integrated with PC-TCS for 100% remote control.

 


PC-TCS Controller
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>> 

 

Click on pictures  for a larger image.

    

RC24-140FN

Optical System
Ritchey-Chretien
Primary Diameter 24.0"
Specular Precision 1/25, or better, wave front RMS  
Mirror Substrate Near-zero expansion ceramic
Focal Ratio f/8.0
Image Scale 42.1 arc sec/mm
Tube Diameter 29"
Tube Length 66"
Tube Cooling 12 V DC fans (active cooling)
Material AL 
Focuser Tube I.D. 4.2"
Available Back Focus 11.5"
Secondary Diameter 8.5"
Sec. Focus Range (electric standard)  12"
Focus Stabilization, w. Al tube Invar 36

Mounting

OGS-140 Fork
Aux. Instrument Cap. 75 lbs.
Tracking Precision <1 arc sec RMS (after modeling)
Pointing Precision <30 arc sec RMS (after modeling)
R. A. Drive 18" 570 tooth worm gear & ball bearing worm
DEC Drive 15" 360 tooth worm gear & ball bearing worm
Shafts 6.0" (140mm at R. A.  bearing ends; 75mm at DEC ends)
Motors Five-phase nano-step
Axis Intersection 72" from base of pier (at 40)
Fork Swing Clearance 18"
Weight (system) 1025 lbs.
R. A. Counterweights 2 x 5 lbs.
Pier 32" high, typically (custom heights available)
Fasteners 18-8 stainless steel