SUPERCEDED-NEWER VERSION AVAILABLE---M104 - the Sombrero Galaxy
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M104 is a distinctive galaxy in that the combination of its large central bulge, and prominent dust lane give it the appearance of a sombrero. M104 is known to have a large central supermassive black hole (as may be common in many galaxies). It is also renowned for having a large number of globular clusters - probably around 1200.
In this image, North is Up. This image is cropped to 77% 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 |
147 subexposures of 45 seconds each at ISO 1600 - total a little over 1 3/4 hours |
Calibration |
30 darks, 30 flats, 30 bias |
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Date |
May 6, 2011 |
Temperature |
51F |
SQM Reading |
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Seeing |
4 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, star shrinking, saturation adjustments,unsharp mask, and high pass filter. Noise Ninja for noise reduction. |
Notes |
Unfortunately, my focus on this one is a bit soft, so the image doesn't stand up well to close scrutiny. Oh well... |
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