11
10" Ritchey-Chrétien
Aperture:
10" (250mm)
Focal length:
2000mm
Focal ratio:
f/8
Mirror figure:
Hyperbolic
Mirror material:
Fused quartz
Mirror Coating:
Enhanced, 94%-96% reflectivity with SiO2 overcoat
Optical Tube:
Steel
Focuser:
3.3" Linear-bearing Crayford, dual speed (10:1)
Drawtube travel:
50mm
Backfocus distance:
243.9mm from rear cell; 139.6mm from 2" collar on drawtube
Central obstruction:
110mm
Tube Length:
721mm
Tube Diameter:
299mm
Bottom mounting bar:
L-style (wide)
Top mounting bar:
L-style, slotted
Cooling fans:
3 built-in fans, powered by 12V DC
Weight:
35.3 lbs.
