Celestron RASA Astrograph
Important note: Delivery time is still unknown
RASA 6 Opt..
Flat field free of optical aberrations like field curvatur..
Fast, wide-field 11” f/2.2 optical design with rare-earth ..
A breakthrough 36 cm aperture, f/2.2 optical system design..
Today, with CCD sensor sizes as large as film or larger,
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11” f/2.2 Rowe-Ackermann Schmidt Astrograph (RASA) V2 uses..
New Ultra-Stable Focus System (USFS) minimizes focus shift..
Kit includes 3 spacer rings of different lengths (7.5mm, ..