Celestron EdgeHD 9.25" Optical Tube Assembly

The Celestron EdgeHD 9.25" SCT Optical Tube Assembly is engineered for retailers and astronomers seeking high-performance telescopes with exceptional imaging quality. Featuring Celestron’s advanced EdgeHD flat-field optics, this OTA delivers razor-sharp, pinpoint stars across the entire field of view, an upgrade far beyond standard Schmidt-Cassegrain telescopes. With a focal plane that is three times flatter than traditional SCTs and StarBright XLT high-transmission coatings, the EdgeHD 9.25" is purpose-built for astrophotographers, observatories, and serious visual observers who demand top-tier performance.

Key Features

• Large 234.95mm (9.25") Aperture: Offers outstanding light-gathering power, making the Celestron C9.25 ideal for deep-sky imaging, nebulae, galaxies, and high-contrast planetary viewing.
• 2350mm Focal Length (f/10): A versatile focal ratio for high-resolution planetary imaging and detailed lunar observation
• EdgeHD Aplanatic Optical System: The signature feature of the Celestron EdgeHD series, producing true flat-field, aberration-free images, perfect for full-frame and APS-C astrophotography
• StarBright XLT Coatings: Premium light-enhancing coatings on all optical surfaces ensure maximum brightness, contrast, and image clarity, essential for advanced astronomy setups.
• CGE Dovetail Bar: The included CGE-compatible dovetail mounting plate guarantees secure and stable attachment to a wide range of equatorial mounts used by professionals and retailers.

Specialised EdgeHD Mechanical Features (Exclusive to EdgeHD Series)

• Mirror Clutches for Stable Focusing: Flexible mirror tension clutches lock the primary mirror in place to minimise image shift. This ensures stable long-exposure astrophotography, a feature not found on standard Schmidt-Cassegrain models.
• Integrated Tube Vents with Micromesh Filters: Cooling vents behind the primary mirror help equalise temperature quickly, improving optical performance. Each vent includes a 95-micron micromesh filter to prevent dust ingress, ideal for observatories and outdoor imaging sessions.
• FASTAR-Compatible for Ultra-Fast Imaging: The Celestron EdgeHD 9.25 OTA supports the FASTAR imaging system, allowing users to convert the telescope from f/10 to an ultra-fast f/2 (with a separately available FASTAR/HyperStar adapter). This delivers one of the most versatile imaging platforms on the market, enabling high-speed deep-sky imaging, wide-field astrophotography, and flexible imaging workflows for retailers and advanced users

Why Retailers Choose the Celestron EdgeHD 9.25 OTA

• High demand among astrophotography enthusiasts
• Trusted by professional observatories, astro-imaging experts, and advanced hobbyists
• Broad compatibility with mounts, cameras, and accessories
• A reliable, premium telescope option for wholesalers and retailers seeking top-tier astronomy products