Celestron 11" Rowe-Ackermann Schmidt Astrograph (RASA11) V2 Optical Tube Assembly (91076) Flattener The Bahtinov mask is used

The Bahtinov mask is used focus small telescopes accurately

Ultima binoculars can stand up to even the toughest outdoor conditions

portability

These eight-lens eyepieces with Phantom Coating® Group excel at planetary observation as well as deep-sky objects - especially when serving as photographic projection eyepieces due to their flat field design

Celestron 11" Rowe-Ackermann Schmidt Astrograph (RASA11) V2 Optical Tube Assembly (91076) Flattener The Bahtinov mask is usedCapturing impressive deep sky astroimages is easier than ever with Celestron's Rowe Ackermann Schmidt Astrograph (RASA) V2, the perfect companion to today's top DSLR or astronomical CCD cameras. This fast, wide field f 2. 2 system allows for shorter exposure times compared to traditional f 10 astroimaging, without sacrificing resolution. Because shorter sub exposure times are possible, your equatorial mount won't need to accurately track over extended