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Celestron
C6-A-XLT (CG-5) OPTICAL TUBE ASSEMBLY
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C6-A-XLT (CG-5) OPTICAL TUBE ASSEMBLY
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$1,133.99
C6-A-XLT (CG-5) OPTICAL TUBE ASSEMBLY
Part Number:
91010-XLT
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Description
Specifications
General Features
6" Schmidt-Cassegrain Optical Tube Assembly
Aluminum Optical Tube
Celestron's premium StarBright XLT coatings
1500 mm focal length (f/10)
25 mm eyepiece included (60x)
Visual back allows for use with 1.25" accessories
6x30 finderscope to help accurately find objects
Star diagonal provides more comfortable viewing position when observing objects that are high in the sky
Includes dovetail rail compatible with CG-5 Advanced Series mount
OPTICAL TUBE INFO:
Optical Design
Schmidt-Cassegrain
Aperture
150mm (6")
Focal Length
1500mm (59")
Focal Ratio
f/10
Focal Length of Eyepiece 1
25mm (0.98")
Magnification of Eyepiece 1
60x
Finderscope
6x30
Star Diagonal
1.25" Star Diagonal
Optical Tube
Aluminum
Highest Useful Magnification
354x
Lowest Useful Magnification
21x
Limiting Stellar Magnitude
13.4
Resolution (Rayleigh)
0.93 arc seconds
Resolution (Dawes)
0.77 arc seconds
Light Gathering Power (Compared to human eye)
459x
Secondary Mirror Obstruction
56mm (2.2")
Secondary Mirror Obstruction by Diameter
37%
Secondary Mirror Obstruction by Area
14%
Optical Coatings
StarBright XLT
Optical Tube Length
406mm (16")
Optical Tube Diameter
180mm (7.12")
Optical Tube Weight
10 lbs (4.54 kg)
Dovetail
Vixen/CG-5 Dovetail bar
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