Comet 38P/Stephan-Oterma Gif with Galaxy NGC 1087

Mike Olason
Location of photo
Denver, Colorado
Date/Time of photo
9 July 2018, 1015UT
11" SCT f/6.4 and STF-8300M CCD Camera
This GIF of Comet 38P/Stephan-Oterma was collected in smoky haze in the morning twilight. You can see the smoke drift through the GIF. The comet was moving past the background Galaxy NGC 1087 in the GIF. 38P was 218 million miles from Earth and magnitude 15.8. Comet 38P will reach perihelion in its 37.94 year orbit on November 10 this year when it will be 147 million miles from the Sun. 38P will make its close approach to the Earth on December 17 when it will be 71 million miles from Earth. The comet is predicted to reach about magnitude 9 in December.
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Mike Olason

About Mike Olason

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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