SKU : CE-91076
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Product Details
The Celestron 11-inch RASA combines speed with performance. Based on the original Schmidt camera design, the RASA optical tube offers significant advantages by providing a short focal length for a relatively large aperture. Experience essentially perfect imaging with this Celestron astrograph.
The Celestron RASA offers an exceptionally sharp 43.3 mm image circle that accommodates large sensors. Its large image circle creates an exceptional wide-field, allowing you to fill even the largest imaging chips with edge-to-edge pinpoint stars with minimal vignetting.
Its short focal length provides a wide-field f/2.2 system, offering the advantage of better apparent tracking. With only a 620 mm focal length, exposure times are also greatly reduced when compared to traditional Schmidt Cassegrain telescopes. You'll be capturing better images in a fraction of the time, without the need of an autoguider!
The Rowe-Ackermann scopes are perfect for creating giant night-sky mosaics, surveying, and comet hunting. Designed with 4-element rare-earth glass, images are free of false color, coma, and field curvature. Optical quality this excellent has been unheard of in astrographs within this price range.
Below you'll see an incredible image of the Rosette Nebula taken by Jason Guenzel using the Triad Ultra filter on the super-fast f/2.2 Celestron RASA telescope!
Engineered as a complete astro-imaging system, every component of the Rowe-Ackermann Schmidt Astrograph is optimized for peak performance with DSLR and astronomical CCD cameras. Down to the thickness of the glass used in the included fully multi-coated optical window or an optional imaging filter, every component of the system has been taken into careful consideration to work together seamlessly.
specifications
Aperture | 279 mm (11") |
Back Focus | 72.8mm |
Camera/Eyepiece Connection | Male T—Thread (M42x0.75) |
Corrected Image Circle | 43.3mm |
Dawes Limit | 0.42 arcseconds |
Focal Length | 620 mm |
Focal Ratio | f/2.2 |
Free Shipping | Yes |
Highest Magnification | 558x |
Light Gathering Power | 1589x |
Limiting Magnitude | 16 |
Optical Design | RASA |
RMS Spot Size | 4.4 microns |
Secondary Obstruction | 114mm |
Tube Diameter | 330 mm |
Tube Length | 838 mm |
Tube Weight | 43 lbs |
included items