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David Callejas

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January 20, 2019

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jeremy Likness
Monroe, WA, USA

02/23/2023
10:30 pm

Photographer's Website

Equipment Details:

Celestron EdgeHD 9.25"
ZWO ASI294MC Pro
L-Pro and L-Extreme filters (2:1)
CGEM-II Mount

Post-processing Details:

Processed the narrowband and RGB separately in PixInsight and then combined them. 5 hours integration time, mainly 5-minute exposures.

Image Details:

I've been photographing M51: the Whirlpool Galaxy locked in a gravitational battle with the glowing dwarf galaxy NGC5195 for years now. This is the first time I feel the result successfully captures the detail and beauty of this grand-design spiral galaxy. I combined narrowband to grab the Hydrogen details with RGB to produce the result. The palette is entirely natural (in other words, I'm using the colors captured by the one-shot color camera, not anything "mapped" using a formula like the Hubble Palette) just stretched for contrast. The total exposure time was around 5 hours.

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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!