New Comet C/2017 K5 Panstarrs

Mike Olason
Location of photo
Denver Colorado
Date/Time of photo
19 June 2017, 0725UT
11" SCT f/6.4 and STF-8300M CCD Camera
This comet is about magnitude 21. It was discovered May 27 and should reach magnitude 19-20 from 2019 to 2021. After a few attempts to image this very faint comet with an 11" SCT all the right conditions finally emerged. These images were taken at 6150 feet, a moonless sky, a starless patch of sky around the comet (stars < mag 21), a slow moving comet, no wind, no hazy skies, no Chem trails, the comet was directly overhead, no neighbors lights on, no deer or other critters touched the scope, the mount tracked perfectly and only one of the five 15 minute images could not be used. That is all it takes to image a 21st magnitude comet with an 11" SCT and an STF-8300M CCD Camera. In other words, for my setup it is almost impossible and the image will never make it into Astronomy or Sky & Telescope. The comet is the fuzzy dot in the center of the circle.
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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 about magnitude 20.5 on a clear night. I give permission to anyone who may want to use my images for a project or article, especially school projects. All that I ask is that if you use some of my images that you give me credit for taking the images. I have 1000s of comet images so if you would like more images of the same comet on a different date, other comets or would like to ask a question about one of my comet images send me an email to "".
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