RASA 11" ROWE-ACKERMANN SCHMIDT ASTROGRAPH
V2 OPTICAL TUBE ASSEMBLY
(CGE DOVETAIL)

The NEW Celestron astrograph telescope features 11" f/2.2 Rowe-Ackermann Schmidt optics and rare-earth glass for images free from false colour, coma and field curvature.

NEW upgraded v2 model with improved Ultra-Stable Focus System (USFS) to reduce focus shift and mirror flop.

52 mm imaging circle ensures pinpoint stars to the edges of the largest imaging sensors.

Custom engineered linear brass focuser bearing reduces image shift and provides precise, smooth focussing.

Built-in, quiet, high-output 12v MagLev fan to reduce cooldown time and block dust.

Celestron’s new Rowe-Ackermann Schmidt Astrograph, the perfect companion to today’s top DSLR or astronomical CCD cameras. This fast, wide-field f/2.2 system offers two advantages over traditional f/10 astroimaging: better apparent tracking and shorter exposures. That means you’ll create better-looking astroimages in a fraction of the time. Because shorter exposure times are possible, your equatorial mount won’t need to accurately track over extended periods.

The Rowe-Ackermann Schmidt Astrograph builds on the legacy of Celestron’s Schmidt Camera, which allowed astrophotographers to produce images on film in the 1970s.

Today, with CCD sensor sizes as large as film—or larger—the Schmidt Astrograph offers a full 52 mm optimised image circle to capture pinpoint stars on the largest imaging chips. Combine this large image circle with a focal length of just 620 mm and you have an instrument suitable for wide-field imaging, creating huge mosaics of the night sky, surveying, and even comet hunting.

Optical Performance

The Rowe-Ackermann Schmidt Astrograph features newly designed optics with 4-element rare-earth glass for images free of false colour and aberrations like coma and field curvature. The optical quality and spot size across the entire image circle is unprecedented for an astrograph in this price range—or even that of a much more expensive instrument. The design also provides minimal vignetting.
Advanced Features

Advanced features include a custom engineered linear brass focuser bearing for fine focus adjustments and a 12V MagLev fan to reduce cooldown time and provide optimal airflow through the dust filtered optical tube.

Engineered as a complete astroimaging system, every component of the Rowe-Ackermann Schmidt Astrograph is optimised for peak performance with DSLR and astronomical CCD cameras. Down to the thickness of the glass used in the included fully-multicoated optical window or an optional imaging filter, every component of the system has been taken into careful consideration to work together seamlessly.

Motorised Focus

Celestron's newly announced Focuser Motor (available separately) provides precise electronic focus control using a Celestron handset (if using a Celestron mount) or via a PC using the supplied focuser utility software or a number of 3rd party programs (e.g. Sequence Generator Pro, Maxim DL etc).

NOTE: The Celestron RASA is a fast astrograph telescope so best suited to experienced astronomers.

Specifications:
Optical Design Rowe-Ackermann Schmidt
Aperture 279 mm
Focal Length 620 mm
Focal Ratio 2.22
Backfocus from front lens assembly 73 mm
Backfocus from included camera adapters 55 mm
Central obstruction diameter 114 mm
Finderscope Not included
Light Gathering Power (Compared to human eye) 1588x
Optical Coatings StarBright XLT
Total Telescope Kit Weight 43 lbs (19.5 kg)

2 Year Warranty