Lyra constellation
Taken with a Canon EOS 550D with an 80mm lens on an equatorial tracking mount, under Bortle 4 skies. 30 thirty second lights, 50 darks, 50 flats.
Stacked in Siril following the manual pre-processing tutorial. Stretched also in Siril using Asinh Transformation. I set the stretch factor to 30, and the black point to 0.005, then exported the image as a jpeg.
I'm curious. Down there on the bottom right, there's a little green cloud. What is that? It moved a little bit over the course of 20 minutes. [Here's a comparison of it in the first few shots, and the last few shots.](https://i.ibb.co/JWbR150Y/Green-cloud.png) Did I capture a comet?
u/Albireo2112 — 4 days ago