Celestron C6-A-XLT (CG-5) Optical Tube Assembly

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 Design	Schmidt-Cassegrain
Aperture (mm)	150 mm (5.91 in)
Focal Length	1500 mm (59 in)
Focal Ratio	10
Focal Length of Eyepiece 1 (mm)	25 mm (0.98 in)
Magnification of Eyepiece 1	60 x
Finderscope	6x30
Star Diagonal	1.25
Optical Tube	Aluminum - black
Fastar Compatible	No
Highest Useful Magnification	354 x
Lowest Useful Magnification	21 x
Limiting Stellar Magnitude	13.4
Resolution (Rayleigh)	0.93 arc seconds
Resolution (Dawes)	0.77 arc seconds
Light Gathering Power (Compared to human eye)	459 x
Apparent Field of View	.83 °
Linear Field of View (@1000 yds)	44 ft (13 m)
Secondary Mirror Obstruction	2.2 in (56 mm)
Secondary Mirror Obstruction by Diameter	37%
Secondary Mirror Obstruction by Area	14%
Optical Coatings	StarBright XLT
Optical Tube Length	16 in (406 mm)
Optical Tube Weight	10 lbs (4.54 kg)
Dovetail Compatibility	CG-5 Mount

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