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Celestron EdgeHD 9.25 OTA (CGE dovetail)
Celestron EdgeHD 9.25 OTA (CGE dovetail) 9.25" EdgeHD aplanatic optical tube, 2350 mm f/10, CGE (Losmandy-style) dovetail bar.
EdgeHD is Celestron's aplanatic, flat-field Schmidt-Cassegrain. It corrects off-axis coma and gives a focal plane more than three times flatter than a standard SCT, so stars stay sharp to the edge of large camera sensors. Mirror clutches reduce image shift during long exposures, filtered vents release warm air from behind the primary, and every tube is star-tested with a camera before it ships. Use it at native f/10, at f/7 with the matching EdgeHD 0.7× reducer, or at f/2 with third-party Fastar accessories.
Optical Optical design EdgeHD aplanatic Schmidt-Cassegrain Aperture 235 mm (9.25") Focal length 2350 mm Focal ratio f/10 Secondary obstruction 85 mm; 36% by diameter, 13% by area Coatings StarBright XLT Resolution 0.59″ (Rayleigh); 0.49″ (Dawes) Limiting magnitude 14.4 Fastar compatible Yes
Mechanical and package Tube length 559 mm Tube diameter 272 mm Weight 9.53 kg Tube Aluminium Dovetail CGE (Losmandy-style) dovetail bar
Manufacturer documentation Specifications from Celestron's official product page (model 91040-XLT), checked 2026-11-06. Supplier: Nimax item 16401.
Referencia
16401
Ficha técnica
Apertura (mm)
235
Tratamientos
StarBright XLT
Cola de milano
CGE
Focal (mm)
2350
Relación focal
f/10
Magnitud límite
14.4
Diseño óptico
EdgeHD aplanatic SCT
Diámetro del tubo (mm)
272
Longitud del tubo (mm)
559
Peso (kg)
9.53
Referencias específicas
upc
050234104098
ean13
4047825023605
MPN
91040-XLT
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9.25" EdgeHD aplanatic optical tube, 2350 mm f/10, CGE (Losmandy-style) dovetail bar.
Manufacturer model: Celestron 91040-XLT · Specifications checked against manufacturer data on 2026-11-06