B 33 - Dark Nebula

Orion

Dark Nebula

B 33 - Dark Nebula - North is to the left
Date: Oct 28,30 2008 Time: 04:30 CST Location: Haltom City Tx
Instrument: 253mm f/9 Ritchey Chretien Mount: AP1200GTO Guiding: ST-10XME Internal Guider
Extra Hardware: Water Assist Cooling Seeing: Good Transparency: Good
Camera: SBIG ST-10XME Filter Wheel: CFW-10 Filter: AstroDon 6nm Ha
Exposure: 12 x 1800 Seconds Luminance Camera Control: MaximDL 4.11 Processing: MaximDL,Sigma-Reject, PSCS

Image Center: RA 05h 41m 25s, Dec -02d 26m 11s, Pos Angle 29.4d
Effective Focal Length 2276.7 mm ~ .62" per Pixel
Notes: Calm. Temp ~40 Degrees F. Guiding was ~ .7 arc second