Comet 45P Honda-Mrkos-Pajdusakova approaching Comet 158P Kowal-Linear

Mike Olason
Location of photo
Denver Colorado
Date/Time of photo
24 May 2017, 0349UT
11" SCT f/6.4 and STF-8300M CCD Camera
In Earth's night sky Comet 45P is approaching Comet 158P in this image (11 ten minute images stacked on 158P), the comets are only 0.08 degrees apart with 158P showing a clear nucleus but 45P has become a dusty glow as it moves away from Earth. Both comets are about magnitude 20 and are moving ESE. To give some perspective to the image, 45P is 172 million miles from Earth while 158P is 428 million miles from Earth.
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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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