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David Callejas

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January 20, 2019

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Chris McCormack
Darwin. Northern Territory. Australia

07/28/2022
12:20 am

Equipment Details:

Sky Watcher ED80, ZWO1600mm Pro.

Post-processing Details:

Processed RGB subs in PIxinsight

Image Details:

M31 The Andromeda Galaxy. The nearest large galaxy to our own Milky Way, our neighbour is 2.5 million light years distant from us on Earth. M31 is the most distant object a human can see with a naked and unaided eye. The regions of pink in the outer spiral rings are star forming regions high in Hydrogen (HII) gases. The image consists of Ha-25 @ 300 secs. RGB L all at 120 secs, R-65, G-60, Blue-65, L-20. My first year doing Astrophotography & first attempt at an RGB-Ha composite, giving a total integration time of ~9hrs. Hope you like my composistion.

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!