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David Callejas

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January 20, 2019

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Ken Chan
Portola Valley, CA, USA

08/11/2021
12:38 am

Photographer's Website

Equipment Details:

Nikon D750 + TPO UltraWide 180 + MoveShootMove StarTracker

Post-processing Details:

Stacked 5 photos taken at ISO 200, 60s, f/4.5, 180mm and edited in Photoshop.

Image Details:

RS Ophiuchi is a binary system composed of a red giant and white dwarf. It recently displayed a temporary increase in brightness as the result of the white dwarf igniting accreted matter from the red giant and triggering a thermonuclear explosion. This recurrent nova occurs on a roughly 15 year cycle.

Posted

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!