Bright New Comet C/2017 O1 (No Name Yet) among several Galaxies

Mike Olason
Location of photo
Denver Colorado
Date/Time of photo
25 July 2017, 0907UT
11" SCT f/6.4 and STF-8300M CCD Camera
New Comet C/2017 O1 was discovered on July 19 by the All-Sky Automated Survey for Supernova and has not been given a name yet. It is about magnitude 14 and will brighten to about magnitude 8 by October before fading to Magnitude 20 in 2019. This image was taken through a 10 minute hole in the clouds after waiting 2 mornings for the clouds to open and the wind to stop shaking the telescope. The image is a negative of the original which shows the comet and galaxies the best at a low altitude in a hazy sky. The inset is an average of two 180s images.
Astronomy Pictures: Sky & Telescope's Online Gallery, Meteor, Comet & Asteroid Pictures
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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