M42 - Orion nebula (mosaic)

 Posted: Feb 15th, 2025
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NGC
IC
HD
Technical Info
Telescope/Lens: Sharpstar 20032pnt
Camera: ZWO ASI 2600mc
Mount: ZWO AM5
Guide Scope: Askar 32mm F4
Guide Camera: zwo 120mc
Software: pixinsight, photoshop
Exposure:
1200 x 120" ISO/Gain: 100 - RGB (4 panels, 10h each)
Green zoneLight Pollution:
 Adelaide, Australia
 Feb 1st, 2025
40 h 0 m
1053
Resolution: 5803x3789 px
Scale: 22411 KB
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Comments

Wow!
17 Feb, 2025 Reply
Why do people always list the total accumulation of all panels? When we look at an image, we don't initially know it's made from panels, and the first thing we see is the total number of hours. We think, "Wow, this (before zooming in) can only be achieved with 40 hours, unfortunately." Then we look closer and find out it's actually 4 panels of 10 hours each. That creates mixed feelings. I understand that accumulating 40 hours deserves respect, but that's secondary and belongs in the description. The image, no matter how you look at it, is effectively 10 hours in terms of signal, not labor hours. I know you list the number of frames, but the field is called "exposure," and you can't simply add up the exposure times of panels.
17 Feb, 2025 Reply
Anastasiya Tretyakova Replied to Oeswww
Logical remark! I also don't understand why they add them up like that, if it's the number of work hours, not exposure time.
8 Mar, 2025 Reply

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