RCOS 12.5 inch "Ruggedized" Military Ritchey-Chrétien...

RCOS 12.5 inch f/9 (112.5 inch / 2857mm focal length) "Ruggedized" Military Instrument.

Optional Protected Gold or Silver Coatings available for the highest reflectivity in Infrared out to 8-12 microns.

12.5 inch (0.32 meter) f/9 RC Specifications - 112.5 inch / 2857mm focal length
  • 12.5 inch f/9 Ritchey-Chrétien Zero Expansion Astro-Sitall Optics by Star Instruments certified to 1/4 wave P-V and 1/25 wave RMS or better.
  • Fringe analysis and interferometric data supplied with each optical set.
  • Enhanced Aluminum (SiO2/TiO2) overcoat - 96.9% reflectivity.
  • "Ruggedized" construction allows for vehicle or trailer use, or mobile tracking mount, such as the Cine-Sextant.
  • Low Expansion, light weight Carbon Fiber / Nomex Tube for superior performance and stability.
  • 6061 and 7075 Aluminum components - All CNC Machined.
  • Heavy Duty Precision Secondary Mirror Focuser.
  • 2-Stage Primary mirror baffle with internal knife-edge light stops.
  • Secondary light baffle.
  • 6061 Aluminum Mounting Rings - CNC Machined, Clear Anodize Type II.
  • Active Cooling.
  • RCOS "Focus and Forget" Technology.
  • Shipped fully assembled, collimated, and ready to use.
  • RCOS Custom CNC Machined "light weight" Losmandy compatible dovetail plates, Clear Anodize Type II.
  • Fixed Instruments (rear cell) Adapter Set - FIA.
  • Built in carbon dew shield.
  • Tube end ring (aluminum), Clear Anodize Type II.
  • CNC machined dust cover.
System 12.5" f/9
Focal Length 2857mm
Base Price Call
Delivery Status 45-60 Days Upon Receipt of Optics
Back Focus 12"
Overall Length/Diameter 41"/16.5"
Primary Focal Length 40"
Primary Hole 3.5"
Primary to Secondary Spacing 26.5"
Radius of Field Curvature 14.65"
Secondary Amplification 2.85X
Secondary Size 4.80"
Total Weight* 60 pounds

*100% ready for imaging as equipped above including mounting rings and dovetail plates.