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

 Posted: Mar 15th, 2026
Technical Info
Telescope/Lens: Sky-Watcher ED80
Camera: Canon R6 MK2
Mount: HEQ5 Pro
Software: MaximDL, Siril, Topaz Denoise
Exposure:
323 x 30" ISO/Gain: 1000
 Sofrino,
 Mar 16th, 2024
2 h 42 m
8
Resolution: 520x520 px
Scale: 33 KB
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," though on a good camera body. A crop of the central part. Right next to it is a frame from a different camera body—a Canon 77D—where exposures had to be 5 minutes long to see anything. Here, 30 seconds and everything looks fine.
Current photo Updated
  Today, at 21:28
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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…
  Today, at 21:21
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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…
  Today, at 21:01
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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…
  Today, at 20:56
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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.)
  Today, at 20:51
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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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