File:Crescent Nebula - Flickr - astrophotography andy.jpg

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It formed by the fast stellar wind from the Wolf-Rayet star WR 136 (Bright star in the middle) colliding with and energizing the slower moving wind ejected by the star when it became a red giant.

Had to overcome a bunch of issues last night. Think I ended up imaging our neighbors pine tree at one point and had some autoguiding issues. I expected higher quality... anyway, here is Crescent Nebula after 1 hour and 35 minutes.

Technical Info: Optics: SGO 6" f/4 Imaging Newtonian @ 610mm FL Explore Scientific 2" HR Coma Corrector Camera: ZWO ASI533MC Pro Filter: 2" Optolong L-Enhance Mount: Losmandy GM8 Guiding: QHY Mini Guide Scope + PHD2 Software Acquisition: Sequence Generator Pro Exposure: Light (Gain 200) - 19 exposures @ 300 Seconds (1 hours, 35 Minutes) Calibration: 50 Bias, 30 Darks, 0 Flats

​Processing: Deep Sky Stacker, Adobe Photoshop, Topaz Denoise AI, Astronomy Action Set plug in for PS, Astro Flat Pro plug in for PS
Date Taken on 5 July 2020, 05:52
Source Crescent Nebula
Author Andy Weeks
Flickr tags
InfoField
ngc6888, zwo, asi533mcpro, optolong, l-enhance, losmandy, losmandy gm8

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Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

This image was originally posted to Flickr by astrophotography_andy at https://flickr.com/photos/160049573@N04/50080557002. It was reviewed on 21 August 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero.

21 August 2020

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current07:37, 21 August 2020Thumbnail for version as of 07:37, 21 August 20202,000 × 1,901 (2 MB)Red panda bot (talk | contribs)In Flickr Explore: 2020-07-06

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