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The 11" f/2.2 Rowe-Ackermann Schmidt Astrograph Telescope from Celestron is specifically designed for astrophotography and astroimaging with a large 11" aperture and fast f/2.2 focal ratio. The OTA is being offered by itself without a mount, and comes with a Celestron CGEM-style dovetail plate for use on compatible mounts and tripods. Using the improved StarBright XLT multi-coating system, light transmission is increased throughout the entire optical path with anti-reflection multicoated lenses, highly reflective multicoated mirrors, and 4-element rare-earth glass.
A 43.3mm imaging circle is made to cover today's large DSLR and CCD imaging sensors to capture full-frame shots. Its fast focal ratio reduces exposure times without sacrificing image quality, and gives the user more time for multiple shots of the same object for layering or with different filters, or to change subjects completely. A custom-designed 10:1 linear brass focuser enables very precise focusing to clearly resolve topographic details on the Moon, virtually remove comas and corona from distant stars, and reveal details of most other celestial objects in between. Since this OTA is designed as an imaging scope, a 42mm T-thread camera adapter and 48mm camera adapter are provided. Other adapters are available if required.
11" diameter aperture
620mm focal length
Fast f/2.2 focal ratio
Proprietary StarBright XLT fully multicoated optical system
4-element rare-earth glass for true color rendition without aberrations across the entire field of view
43.3mm image circle captures pinpoint stars on today's large CCD and DSLR imaging chips