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Celestron C6 XLT Schmidt-Cassegrain OTA (CG-5 dovetail)
Celestron C6 XLT Schmidt-Cassegrain OTA (CG-5 dovetail) 6" Schmidt-Cassegrain optical tube, 1500 mm f/10, CG-5 (Vixen-style) dovetail bar.
Celestron's classic Schmidt-Cassegrain packs a long focal length into a short, rugged aluminium tube. StarBright XLT coatings on every optical surface maximise light transmission and contrast, so it is equally at home on the Moon and planets, small galaxies and planetary nebulae. Fastar compatible: the secondary mirror can be removed for third-party f/2 imaging systems. Pair it with the Celestron 0.63× reducer/corrector for a faster, wider field.
Optical Optical design Schmidt-Cassegrain Aperture 150 mm (6") Focal length 1500 mm Focal ratio f/10 Secondary obstruction 56 mm; 37% by diameter, 14% by area Coatings StarBright XLT Resolution 0.93″ (Rayleigh); 0.77″ (Dawes) Limiting magnitude 13.4 Fastar compatible Yes
Mechanical and package Tube length 406 mm Tube diameter 180 mm Weight 4.54 kg Tube Aluminium Dovetail CG-5 (Vixen-style) dovetail bar
Manufacturer documentation
Reference
7936
Data sheet
Aperture (mm)
150
Coatings
StarBright XLT
Dovetail
CG-5 (Vixen-style)
Focal length (mm)
1500
Focal ratio
f/10
Limiting magnitude
13.4
Optical design
Schmidt-Cassegrain
Tube diameter (mm)
180
Tube length (mm)
406
Weight (kg)
4.54
Specific References
UPC
050234101097
EAN13
4047825000651
MPN
91010-XLT
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6" Schmidt-Cassegrain optical tube, 1500 mm f/10, CG-5 (Vixen-style) dovetail bar.
Manufacturer model: Celestron 91010-XLT · Specifications checked against manufacturer data on 2026-11-06