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David Callejas

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January 20, 2019

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Brian Ottum
Animas, NM, USA

12/02/2021
05:00 am

Photographer's Website

Equipment Details:

Canon 5DmkIII, 10" f/5 reflector, PlaneWave L-350 tracking on the comet. Remotely-controlled from Michigan.

Post-processing Details:

5x300sec exposures. Converted, calibrated, aligned, stacked in ImagesPlus (now a free software). Photoshop used to correct color balance, increase contrast, fix bad pixels, crop.

Image Details:

It is exciting to see Comet 2021 A1 Leonard brightening! This is a great binocular object now, and even better when it joins Venus and crescent moon in the low twilight evening sky Dec 16-20. Since the mount was set to track the comet, the stars are streaked during the 25 minutes of total exposure. This comet is really moving through the inner solar system.

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January 20, 2019

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David Callejas

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About the Author:

David Callejas, Marketing Director, helps bring EarthSky's content to the world via online ads and other products. He creates strategies that help people around the world find us and appreciate the work we do. He helps manage the EarthSky Store and bring to you the new products that you love. He's the chief liaison between EarthSky.org and the world of commerce. All that, plus he helps post content and populate our pages on Facebook, Google+ and Twitter. Go David!