Comet 22P Kopff visually passing through the Trifid Nebula M20

Location of photo
Denver, Colorado
Date/Time of photo
0114UT 11/12/2015
6" SCT f/10, SBIG STF-8300M
Comet 22P Kopff visually passing through the Trifid Nebula M20. Imaged shortly after sunset due to low altitude (8 degrees) of the comet in the southwest. 300 second exposure to properly expose the nebula and comet, but not smear the comet due to it's moving at 2 arc minutes per hour.
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Mike Olason

About Icylander2

I started imaging comets in 1994 with an ST-5 CCD Camera and an 11" SC Telescope. Since then the CCD cameras have changed (ST-7, ST-402ME and STF-8300M), but I am still using the 11" SC Telescope. Naturally I have used a lot of smaller telescopes to obtain larger fields of view. I live south of Denver at an elevation of 6150 feet which allows me to image comets down to almost magnitude 21 on a perfect night. Unfortunately ChemTrails have turned Denver cloudy and dry. I use the camera software CCDOps to process my images. All I do to each image is dark subtraction and flat field, stack images as required to show faint comets, contrast/bright adjust the final image and maybe use a median filter to reduce the image noise. The result is an image that reflects reality and will never win any picture of the day award. If you would like to use my images for a project or ask a question send me an email to "".
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