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

Posted: Mar 16th, 2026

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NGC

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

Resolution: 2000x2000 px

Scale: 644 KB

ankorot

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

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

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"…

M51, Canon R6 mark II, 30 sec X ISO1000, 2.6 hrs

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…

M51, Canon R6 mark II, 10 sec X ISO4000, 3hrs

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…

M51, Canon 77D, 2hrs

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…

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

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.)

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

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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