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David Callejas

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January 20, 2019

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Jeffrey Horne
Nashville, TN, USA & Bone Cave, TN, USA

09/12/2021
01:00 am

Photographer's Website

Equipment Details:

Imaging telescope: TPO Ultrawide 180
Imaging camera: ZWO ASI2600MC Pro
Mount: Sky-Watcher EQ6R-PRO
Guiding telescopes: ZWO Mini Guide Scope
Guiding camera: ZWO ASI290MM Mini
Software: ZWO ASIAir Pro, Pleiades Astrophoto PixInisight, Aries Productions Astro Pixel Processor, Photoshop CC
Filters: Optolong L-Pro 2'', Optolong L-eXtreme 2"
Accessory: ZWO AsiAir Pro

Post-processing Details:

Calibrated, stacked, light pollution removal in Astro Pixel Processor. Color calibration, stretching, curves, Starnet++ in Pixinsight. Levels, noise reduction, sharpening, and selective stretching in Photoshop. I removed the stars from the 20 minute sub stack, and replaced them with the 90 sec L-Pro subs.

Image Details:

The Cygnus Loop, taken mostly from light-polluted Nashville, TN.

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!