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SH2-157 - The Lobster Claw Nebula, RASA 8", 3 hrs

 Posted: Mar 1st, 2026
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Technical Info
Telescope/Lens: Celestron RASA 8
Camera: Player One Ares-C
Mount: ZWO AM5N
Software: Nina, PixInsight
Exposure:
88 x 120" ISO/Gain: 100 - Antlia ALP-T Dualband 5nm
Orange, Bortle 6 zone:
 Sofrino, Russia
 Jul 27th, 2025
2 h 56 m
20
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Resolution: 2986x2967 px
Scale: 1482 KB
ankorot
20
Dithering every 5 frames.
Two processing versions: color unchanged (red) and color in the HOO palette (blue-yellow).

Processing: PixInsight, ADBE, blurX, noiseX, HT_Stretch_RGB, starX.
#1: red mask
#2: Narrow band normalization, yellow mask, blue mask.
Updated
SH2-157 - The Lobster Claw Nebula, RASA 8", 3 hrs
  Today, at 19:02
  2 h 56 m
Dithering every 5 frames. Two processing versions: color unchanged (red) and color in the HOO palette (blue-yellow). Processing: PixInsight, ADBE, blurX, noiseX…
Current photo
SH2-157 - The Lobster Claw Nebula, RASA 8", 3 hrs
  Today, at 19:00
  2 h 56 m
Dithering every 5 frames. Two processing versions: color unchanged (red) and color in the HOO palette (blue-yellow). Processing: PixInsight, ADBE, blurX, noiseX…
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