Celestron NexStar Evolution 6 Telescope NexStar Evolution - Page 24
NexStar Evolution 8 Telescope
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NexStar Evolution 8 Telescope Optical Design Aperture Focal Length Focal Ratio Focal Length of Eyepiece 1 Focal Length of Eyepiece 2 Magnification of Eyepiece 1 Magnification of Eyepiece 2 Finderscope Star Diagonal HIghest Useful Magnification Lowest Useful Magnification Limiting Stellar Magnitude Resolution (Rayleigh) Resolution (Dawes) Light Gathering Power (Compared to human eye) Secondary Mirror Obstruction Secondary Mirror Obstruction by Area Optical Coatings Optical Tube Length Schmidt Cassegrain 203.2mm 2032mm 10 40mm 13mm 51x 156x StarPointer, uses 3V CR2032 lithium button battery 1.25" 480x 29x 14 0.69 arc seconds 0.57 arc seconds 843x 2.5" (64mm) 9.77% StarBright XLT 17" 24 I ENGLISH
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24
I
ENGLISH
NexStar Evolution 8 Telescope
Optical Design
Schmidt Cassegrain
Aperture
203°2mm
Focal Length
2032mm
Focal Ratio
10
Focal Length of Eyepiece 1
40mm
Focal Length of Eyepiece 2
13mm
Magnification of Eyepiece 1
51x
Magnification of Eyepiece 2
156x
Finderscope
StarPointer, uses 3V CR2032 lithium button battery
Star Diagonal
1°25”
HIghest Useful Magnification
480x
Lowest Useful Magnification
29x
Limiting Stellar Magnitude
14
Resolution (Rayleigh)
0°69 arc seconds
Resolution (Dawes)
0°57 arc seconds
Light Gathering Power (Compared to human eye)
843x
Secondary Mirror Obstruction
2°5” (64mm)
Secondary Mirror Obstruction by Area
9°77%
Optical Coatings
StarBright XLT
Optical Tube Length
17”