Optical Design
Schmidt-Cassegrain
Aperture (mm)
203.2 mm (8 in)
Focal Length
2032 mm (80 in)
Formula:Focal Ratio
10
Focal Length of Eyepiece 1 (mm)
25 mm (0.98 in)
Formula:Magnification of Eyepiece 1
81 x
Finderscope
6x30
Star Diagonal
1.25
Optical Tube
Aluminum
Formula:Highest Useful Magnification
480 x
Formula:Lowest Useful Magnification
29 x
Formula:Limiting Stellar Magnitude
14
Formula:Resolution (Rayleigh)
0.69 arc seconds
Formula:Resolution (Dawes)
0.57 arc seconds
Formula:Light Gathering Power (Compared to human eye)
843 x
Secondary Mirror Obstruction
2.5 in (64 mm)
Formula:Secondary Mirror Obstruction by Diameter
31%
Formula:Secondary Mirror Obstruction by Area
9.77%
Optical Coatings
StarBright XLT
Optical Tube Length
17 in (432 mm)
Optical Tube Weight
12.5 lbs (5.67 kg)
Dovetail Compatibility
CG-5 Mount
