Uploaded 12-Apr-10
Taken 16-Apr-10
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Original file size205 KB
Image typeJPEG
Color spaceUncalibrated
M94 - Cat's Eye Galaxy in Canes Venatici

M94 - Cat's Eye Galaxy in Canes Venatici

Date: 4/15/2010
Target: M94 - Galaxy in Canes Venatici
Telescope: Orion 8" f/4.9 w/Multi-Purpose Coma Corrector
Camera: Canon 40D (modified)
Filter: None
Exposures: 56x240s (3.7h) @ ISO1600
Framing: North is Up, 68% Crop
Start Temp: 53F
End Temp: 47F
Location: Mocksville, NC
Seeing: 4/5
Transparency: 4/5
Guiding (RMS/Osc): 0.22/41
Dark Noise (StdDev): 306
FWHM: 4.6"
Start Time: 10:00PM
End Time: 3:00AM
Captured with Nebulosity, stacked using DeepSkyStacker, processed in Photoshop.

Winner - Cloudy Nights Intermediate DSO Challenge April 2010

From Wikpedia.org:

Messier 94 (also known as NGC 4736) is a spiral galaxy in the constellation Canes Venatici. It was discovered by Pierre Méchain in 1781, and cataloged by Charles Messier two days later. Although some references describe M94 as a barred spiral galaxy, the "bar" structure appears to be more oval-shaped. The galaxy is also notable in that it has two ring structures.