M51, the Whirlpool Galaxy

 Posted: Dec 9th, 2025
Technical Info
Telescope/Lens: Sky-Watcher 200/1000 PDS
Camera: SVBONY SV605CC
Mount: Juwei 17-100
Guide Scope: SVBONY SV106
Guide Camera: TOUPTEK GPM 462
Software: Siril, GraXpert, Starnet++, Cosmic Clarity, GIMP
Accessories: SHARPSTAR 1X MPCC
Exposure:
180 x 90" ISO/Gain: 101 - SVBONY UV/IR CUT
Orange, Bortle 6 zone:
 Chekhov, Russia
 Jul 4th, 2025
4 h 30 m
292
Resolution: 2825x2809 px
Scale: 40185 KB
Last time I overdid the contrast, so I made a softer version.
Current photo Updated
  9 Dec, 2025
  4 h 30 m
Last time I overdid the contrast, so I made a softer version.
  21 Nov, 2025
  4 h 30 m
A miracle did not happen - after a week, the previous processing seemed not the most successful :) I took into account the "criticism" about insufficient sharpn…
  13 Nov, 2025
  4 h 30 m
Taken over several short nights in early July, but I didn't like how the processing turned out for a long time.
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