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The Trifid Nebula (Messier 20) is a combination of a hydrogen emission nebula (red) and a reflection nebula (blue). This nebula looks like a piece of popcorn to me when viewed through large telescopes. This is a relatively short stack from a dark location. #astrophotography

Kristopher Setnes

@kristopher.setnes.net

While processing this image a few years ago, I noticed a little streak from a moving object (red arrow). It overlapped enough image to image, so the outlier rejection logic did not remove it. After a little research, I found it to be a known asteroid (1277 Dolores).

28/1/25, 5:18 am0 reposts2 likes

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