M97 - the Owl Nebula
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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 |
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Mount |
Schaefer GEM - 7 1/2 |
Guiding |
Unguided |
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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 |
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Date |
May 7, 2011 |
Temperature |
47F |
SQM Reading |
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Seeing |
3 of 5 |
Location |
Pine Mountain Club, California |
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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. |
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