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

Celestron C6-A-XLT CG-5 6" f/10 Schmidt-Cassegrain Telescope (OTA Only)

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Your Price: CAD1,288.82

Retail Price:CAD1,353.26

Your Savings:CAD64.44(5%)

Part Number: 91010-XLT

Availability: Usually ships in 5-7 business days

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Description

Product Highlights

6" (150mm) Schmidt-Cassegrain OTA
1500mm Focal Length, f/10 Focal Ratio
StarBright XLT Optical Coating System
25mm Eyepiece and 90° Star Diagonal
Internal Focusing Mechanism
6x30 Finderscope with Mounting Bracket
Standard CG-5 (Vixen) Dovetail Plate
OTA Only; Mount and Tripod Required

Striking a comfortable balance between power and portability, the Celestron C6-A-XLT CG-5 6" f/10 Schmidt-Cassegrain Telescope is an ideal choice for observing objects within or beyond our solar system. It features a Schmidt-Cassegrain optical system consisting of a corrector plate, spherical primary mirror, and secondary mirror that work together to reduce spherical and chromatic aberrations to crisp and clear high-resolution images with accurate color representation with distortion - especially at the edges. Complementing the optical system is the proprietary StarBright XLT optical coating system, which improves light transmission and reflectivity across the entire visual spectrum.

The optical tube is outfitted with a standard 1.25" visual back to make it easier to find eyepieces, accessories, and imaging gear. For visual observations, a 1.25" star diagonal is included along with a 25mm eyepiece that yields 60x magnification. The C6-A-XLT is offered here without a mount or tripod for users who already have a reliable support system and are looking to upgrade or add to their existing gear, but comes with a standard-sized CG-5 dovetail plate that is compatible with Vixen-style saddles.

Optical Tube

6" (150mm) aperture
f/10 focal ratio
1500mm effective focal length
Schmidt-Cassegrain catadioptric optical design
StarBright XLT optical coatings
Resolution: 0.93 arcsec (Rayleigh); 0.77 arcsec (Dawes)
Secondary mirror obstruction: 2.2" (69mm); 37% by diameter; 14% by area

StarBright XLT System

Maximizes light transmission through optical path
Improves color rendition, contrast, sharpness, resolution, and brightness
Broad-band system provides flat wavelength transmission across the entire visual spectrum
Multi-layer mirror coatings with layers of aluminum, SiO2 (quartz), and TiO2 (titanium dioxide)
Multi-layer anti-reflective corrector plate coatings with layers of MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide). Hafnium has a wider band-pass than the commonly used titanium
High-transmission water white glass corrector plate limits light loss due to internal absorption

Mounting

OTA only, mount and tripod required for proper use
Standard CG-5 (Vixen-style) dovetail plate for compatible saddles
OTA weight: 10 pounds

Included Accessories

Standard SCT threads
1.25" eyepiece/accessory holder
Use for prime-focus or projection astrophotography with optional adapters

1.25" diameter barrel
Accepts most 1.25" eyepiece filters
25mm focal length yields 60x power
0.83° apparent angle of view
44' field of view at 1000 yards

90° angle puts head in comfortable viewing position
Threaded for direct connection to OTA without the need for the visual back
1.25" snout and eyepiece/accessory holder
Star diagonal corrects image horizontally, but not vertically

Low 6x magnification preserves wide field of view to more easily find alignment or guide stars
30mm aperture helps to see dimmer objects and stars for easier alignment and star-hopping navigation

Specifications

Optical Design	Schmidt-Cassegrain
Aperture	6" / 152.4 mm
Focal Length	1500 mm
Focal Ratio	f/10
Eyepiece Barrel Diameter	1.25"
Diagonal	90° star 1.25" snout and eyepiece holder
Finderscope	6 x 30
Tripod	None
Mount Type	CG-5 dovetail plate Compatible with Vixen-style saddles
Power Source	None
Optical Tube Length	16.0" / 40.6 cm
Weight	10.0 lb / 4.5 kg

Packaging Info
Package Weight	13.2 lb
Box Dimensions (LxWxH)	20.5 x 16.0 x 12.0"

In the Box

Celestron C6-A-XLT CG-5 6" f/10 Schmidt-Cassegrain Telescope (OTA Only)

6x30 Finderscope

1.25" 90° Star Diagonal

1.25" 25mm Plössl Eyepiece

Limited 2-Year Warranty

* The difference is about 2". The CGE uses a Losmandy "D" compatible dovetail (about 4" wide) and the CG5 uses a Vixen compatible plate (about 2" wide).

Based on Astronomy magazine’s telescope "report cards", scopes of this size and type generally perform as follows . . .


Terrestrial Observation:	Yes
Lunar Observation:	Great
Planetary Observation:	Good
Binary and Star Cluster Observation:	Good
Galaxy and Nebula Observation:	Good
Photography:	Yes
Terrestrial Photography:	Yes
Lunar Photography:	Yes
Planetary Photography:	Yes
Star Cluster / Nebula / Galaxy Photography:	Yes

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Celestron C6-A-XLT CG-5 6" f/10 Schmidt-Cassegrain Telescope (OTA Only)

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