Comet 118P Shoemaker-Levy and Barred Galaxy NGC 4643

Mike Olason
Location of photo
Denver Colorado
Date/Time of photo
02 March 2017, 0916 UT
11" SC Telescope and STF-8300M CCD Camera
Magnitude 18 Comet 118P Shoemaker-Levy passing magnitude 12 Barred Galaxy NGC 4643. NGC 4643 looks like Saturn and it's rings when the contrast/brightness are adjusted as shown in the inset. The other inset attempts to show the faint comet better by stacking 3 images.
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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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