Catching Light

Photography by

Dan Lessmann

Oklahoma City Clear Sky Clock

Cheddar Ranch Observatory Clear Sky Clock

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M22 is located in the constellation of Sagittarius.  It's the largest and brightest of the globular clusters cataloged by Messier but is usually considered a bit less impressive than M13 at a much higher declination for northern hemisphere observers; a perfect example of the quality observing near the zenith.  M22 is close, only about 9,000 light years away, and spans almost half a degree of sky.


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Date:  08/02/1008

Location:  CRO

Telescope:  LX200 10" SCT @ f/6.3

Mount:  AP-1200

Camera:  Hutech Modified Canon 350D

Exposure Count:  10 x 3 minutes, 30 minute total exposure

Guiding:  SBIG ST-402ME, CCDSoft

Post Processing:

ImagesPlus:  Dark and flat calibration, align and combine, digital development

Photoshop CS3:  Smart sharpen, levels, curves, color saturation

NeatImage:  Noise reduction

Last Updated: 11/12/2014  -  Copyright 2004-2013 by Dan Lessmann.  All rights reserved.  Please click here for my usage policy.