M51, RASA 8", 4 hrs (no filter)

 Posted: Mar 16th, 2026
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Technical Info
Telescope/Lens: Celestron RASA 8
Camera: Player One Poseidon-C
Mount: ZWO AM5N
Software: Nina, PixInsight
Exposure:
123 x 120" ISO/Gain: 125 - no filter
Orange, Bortle 6 zone:
 Sofrino, Russia
 Mar 14th, 2026
4 h 6 m
23
Resolution: 2000x2000 px
Scale: 644 KB

Stacked with Drizzle 2x

In this same "stack" (group), there is also a result stacked with Drizzle 1x.

You can compare them.

 

Everything else is the same:
RASA 8", NINA, phd2

PixInsight: WBPP, SPCC, noiseX, blurX, crop (important!), MAS, starX, a bit of sharpening (gentle LHE at 17,55 and 111) via a mask.

Current photo Updated
  Today, at 17:42
  4 h 6 m
Stacked with Drizzle 2x In this same "stack" (group), there is also a result stacked with Drizzle 1x. You can compare them. Everything else is the same:RASA 8"…
  Yesterday, at 21:28
  2 h 42 m
What happens when shooting with high ISO and short exposures compared to low ISO? (total imaging time is the same)This frame is "low ISO and long exposures," th…
  Yesterday, at 21:21
  2 h 50 m
What happens when shooting with high ISO and short exposures compared to low ISO? (total shooting time is the same) This frame uses "high ISO and short exposure…
  Yesterday, at 21:01
  1 h 50 m
An "old" image (2017), taken using older techniques—a standard, unmodified Canon 77D on an ED80 tube with a flattener. Focal length = 510mm. The Heq5 Pro still…
  Yesterday, at 20:56
  4 h 6 m
First test of the Player One Poseidon-C on an RASA 8" tube. A crop of the central part. (The camera is here, but there are no objects for it in the spring.)
  Yesterday, at 20:51
  4 h 6 m
First test of the Player One Poseidon-C (large APS-C sensor) on a Celestron RASA 8" telescope. No filters used, which was a mistake—this caused large star halos…
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