m13, The Hercules Cluster
messier 13. I am quite happy with the result considering it was shot with a 135mm lens.
The red stars do look a bit to red though.
Gear used:
Camera: canon r7 (unmodded) with a iso of 1250.
lens: canon ef 135mm f2 l usm, f/3,5.
mount: skywatcher star adventurer 2i.
2 hours 37 minutes of light frames of 30 seconds, 40 dark frames, 25 flat frames, 40 baies frames.
prosest with:
siril: stacking, plate solving, spectrophotometric color calibration, starnet star revoval, star recomposition stretch.
Graxpert: crop, background extraction, denoising.
Gimp: export photo as jpeg.
u/pascal9000 — 21 hours ago