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.
Click to enlarge
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 | 12V 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" Ø (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 |
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
