M 51 - Spiral Galaxy

Canes Venatici

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Spiral Galaxy

M 51 - Spiral Galaxy - North is Up
Date: May 17, 2007 Time: 03:30 CST Location: Haltom City Tx
Instrument: 253mm F/9 Ritchey Chretien Mount: AP1200GTO Guiding: STL-Remote with Rogue OAG
Extra Hardware: None Seeing: Good Transparency: Good
Camera: SBIG STL11K Filter Wheel: Internal Filter: AstroDon 6nm Clear
Exposure: 12 x 600 Seconds Luminance Camera Control: MaximDL 4.11 Processing: MaximDL,Sigma-Reject, PSCS
Image Center: RA 13h 30m 12s, Dec +47d 09m 10s, Pos Angle -88d 40'
Effective Focal Length 2276.7 mm ~ .82" per Pixel
Notes: Calm. Temp ~65 Degrees F. Guiding was ~ 1 arc second