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C49

Maksim Selivanov
1021380
Category:Deep Sky
Published:
605
C49NGC 2244NGC 2237NGC 2238NGC 2239NGC 2246NGC 2252
Resolution:
3824x2139 px
File size:
5990 KB

Photo description / processing

The first and likely the last object of the winter.

Technical information

Telescope/Lens
SkyRover 50SAW
Camera
QHY miniCAM8M
Mount
ZWO AM3
Guide Scope
SVBONY SV165
Guide Camera
ZWO ASI120MM
Accessories
Gemini AF
Software
N.I.N.A., Pixinsight
Location
Aktau, Kazakhstan

Light pollution

Gray, Bortle 2 zone

Date taken

Exposure

  • 10 × 60″ · ISO/Gain: 9 · R ·
  • 10 × 60″ · ISO/Gain: 9 · G ·
  • 10 × 60″ · ISO/Gain: 9 · B ·
  • 30 × 180″ · ISO/Gain: 9 · S ·
  • 30 × 180″ · ISO/Gain: 9 · H ·
  • 30 × 180″ · ISO/Gain: 9 · O ·

Total exposure: 5 h 0 m

Comments

oeswww
I like it. I have zero [shots] over the winter, even though I live in the south of Russia (Krasnodar).
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KonFuz
If you change the color of the oxygen in the center of the Rosette Nebula, will it look okay?
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Maksim SelivanovReply to KonFuz
Well, ideologically it would be correct to remove the magenta, but on the other hand, in the center the Ha and OIII are so densely mixed that it really should be magenta.
I have a couple more versions, including the "proper" one with the center adjusted—I don’t want to flood the feed with similar-looking work.
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Albireo7
Did you use the extended dynamic range mode on the camera? Or did you shoot in the normal mode?
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Maksim SelivanovReply to Albireo7
Always on. I posted a comparison of the modes on an astronomy forum somewhere, plus I tested it on M42—an exceptionally useful feature.
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Albireo7
Is that large dark red tail on the right only visible in sulfur? Or is it also present in hydrogen?
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Maksim SelivanovReply to Albireo7
Hydrogen, and not very stretched out) There was still room to add more. This is HOO with a mix of SII.
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Albireo7Reply to Maksim Selivanov
Ah, so you have sulfur and hydrogen in the red channel, and oxygen in the green and blue?
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Maksim SelivanovReply to Albireo7
https://youtu.be/td4Z4_fIQOE?si=QpUcrM8FyotrAShX This shows it most clearly.
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Albireo7Reply to Maksim Selivanov
Unfortunately, I can't watch YouTube.
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Maksim SelivanovReply to Albireo7
Briefly - combine HOO, normalize, color HII in gold, stretch the first and second, blend to taste. The principle is described in many places.
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