M97 - the Owl Nebula
M97 - the Owl Nebula
M97 - the Owl Nebula
M97, is a planetary nebula often called "The Owl Nebula". This image doesn't show the owl's face terribly well, but you can see the owl's eyes if you cock your head a bit to the left. If you zoom in on the larger image, you can see a number of faint galaxies spread throughout the field of view.

In this image, North is Up. This image is cropped to 56% of the original full frame.

Exposure Details
Lens Celestron C-8 SCT with Lumicon telecompressor
Focal Length 1100mm
Focal Ratio f/5.5
Mount Schaefer GEM - 7 1/2
Guiding Unguided
Camera Canon 20Da
Exposure 17 subexposures of 45 seconds each at ISO 1600 - total of just under 1 1/2 Hours
Calibration 30 darks, 30 flats, 30 bias
Date May 7, 2011
Temperature 47F
SQM Reading
Seeing 3 of 5
Location Pine Mountain Club, California
Software Used Images Plus 4.0 for camera control, calibration, stacking and digital development. Photoshop CS5 used for color correction, shadows and highlights, star shrinking, highpass filter, and levels. Carboni Actions for saturation adjustments, unsharp mask, screen mask invert, and high pass filter. Noise Ninja for noise reduction.
Notes Not too bad an image, although the focus is slightly soft and is exaggerated by the collimation on the scope being off.