Home |
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Object |
NGC6656, M22 |
Constellation |
Sagittarius |
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Location |
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<Prior | Size |
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<Next | Magnitude |
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Type |
Globular Cluster |
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Instrument |
8" F/2.6 |
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Camera |
STL-11000M
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Exposure |
5min Ha RGB |
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Date |
August 2006 |
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Notes: Bright objects like M22 require shorter exposures. Here a 5 minute exposure is short enough to allow resolution to the core of the globular while still showing some of the surrounding Milky Way stars. Exposures taken from a dark sky site at 8,400' elevation. North is up...
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images and text © 2006- 2014 Dave Erickson |