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M101 Pinwheel Galaxy, RASA 8", 4.5 hrs

 Posted: Apr 22nd, 2026
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Technical Info
Telescope/Lens: Celestron RASA 8" 200/400 F2.2
Camera: Player One Poseidon-C
Mount: ZWO AM5N
Guide Scope: SVBONY SV106 F4 60/240
Guide Camera: Touptek GPM462M
Software: Nina, PixInsight
Exposure:
135 x 120" ISO/Gain: 125 - Player one Anti-Halo 2″ UV IR-CUT Filter
Orange, Bortle 6 zone:
 Sofrino, Russia
 Apr 21st, 2026
4 h 30 m
125
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Resolution: 1442x1308 px
Scale: 220 KB
ankorot
42

Center crop of the frame.

First test of the Player One Anti-Halo 2" UV IR-CUT Filter. Works perfectly — no halos (without it, halos covered half the frame).

First test of auto meridian flip in NINA completed without any time loss (unlike the 10 minutes it used to take for repositioning). Worked flawlessly.

Acquisition: NINA, PHD2
Processing: PixInsight, GraXpert (for background extraction)

Updated
M101 Pinwheel Galaxy, RASA 8", 4.5 hrs
  23 Apr, 2026
  4 h 30 m
Another processing version for comparison — I made the stars smaller in BlurXTerminator.
M101 Pinwheel Galaxy, RASA 8", 4.5 hrs
  22 Apr, 2026
  4 h 30 m
Full APS-C frame. Many galaxies are visible around. First test of the Player one Anti-Halo 2" UV IR-CUT Filter. Works perfectly — no halos (without it, halos co…
Current photo
M101 Pinwheel Galaxy, RASA 8", 4.5 hrs
  22 Apr, 2026
  4 h 30 m
Center crop of the frame. First test of the Player One Anti-Halo 2" UV IR-CUT Filter. Works perfectly — no halos (without it, halos covered half the frame). Fir…
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