Dobsonian Astrophotography
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NGC 7635 RGB

Telescope:   Obsession

Mirror:         25" f/5 Galaxy Optics

Drive:           AZ/ALT, StellarCAT ServoCAT with DSC Argo Navis

Camera Equipment:   ST-10XME Class 2 CCD, CFW-8A, AO-7, Pyxis Field De-Rotator, TCF-S

Exposure:  LRGB:  4x3 : 2,4x3 : 2,4x3 : 4x3

Processing:   CCDOPs, MaxIm DL 4.1, Photoshop 5.0, RegiStar 1.0

Location:   My backyard in Ridgecrest, CA (Mojave Desert), 2600 ft. elevation, population 30,000

Date:         7/18//05

Comments:  First attempt to use the modified UTA with the Pyxis field de-rotator and TCF-S auto-focuser behind the camera. Very poor conditions, winds approximately 7 mph, about a 3/4 moon, and temperature at 90 degrees F at 2AM.  The ST-10XME would only cool to -2 degrees C.