DeepSkyHosting

M81 M82 NGC3077

Category:Deep Sky
Published:
476
M81 M82 NGC3077NGC 3031NGC 3034NGC 3077
Resolution:
6013x3752 px
File size:
19926 KB

Photo description / processing

I bought the camera in winter.
For a long time, snowdrifts lay in the village and the observatory roof wouldn't open due to the frost.
In April, I finally got the new camera up and running — all the components for adjusting the back focus and so on had arrived.
At the end of April, there were only a few days left to capture the RGB channels, which I did. Then came the Moon... a full Moon. I tried to shoot H-alpha throughout those nights, but didn't manage to extract much. Some data was simply lost during H-alpha integration. I shot the L channel in May, and added a bit more RGB. Now the weather has turned bad, and the dark time (Sun below 14 degrees) is only about two hours. I see no point in accumulating more LRGB data, so I'm posting the work as is — everything I managed to gather over 15 days. 
I'm almost satisfied with the processing — I managed to bring out the IFN without losing saturation. All thanks to PixInsight. 
Greetings to the haters — BlurXTerminator was used here only for star correction (not applied to galaxy details). I did without StarXTerminator because it slightly suppresses the galaxy clusters, of which there are many here.

Technical information

Telescope/Lens
Sky-Watcher 200PDS
Camera
ZWO ASI 2600MM Pro
Mount
МТ-120
Guide Scope
Orion 80/400
Guide Camera
Zwo ASI662MC
Accessories
Starizona 0.75 Nexus Reducer, ZWO EFW, ZWO EAF
Software
Pixinsight, Adobe Photoshop, DeepSkyStacker, Siril
Location
деревня Новая Дорога, Россия

Light pollution

Green, Bortle 4 zone

Date taken

Exposure

  • 16 × 300″ · ISO/Gain: 100 · B ·
  • 26 × 300″ · ISO/Gain: 100 · G ·
  • 32 × 300″ · ISO/Gain: 100 · R ·
  • 15 × 300″ · ISO/Gain: 100 · L ·
  • 116 × 300″ · ISO/Gain: 100 · H ·

Total exposure: 17 h 5 m

Comments

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