Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5457  ·  NGC 5477
M101, bruciesheroes
M101
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M101

M101, bruciesheroes
M101
Powered byPixInsight

M101

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Description

M101, also known as the Pinwheel Galaxy, is a beautiful spiral galaxy in the constellation Ursa Major.

Edit: Added 1h of additional data. Noise is reduced a bit.

Edit2: Actually made a mistake in the previous stacking process. So the current image of M101 turns out to be much better imo.

Edit3: I changed the stacking process. The improvements are subtle, but i`m happy now with the overall result. One thing that bugs me is the very deep space noise, i`m not sure how to handle that.

Edit4: I added roughly 2h hours of exposure time without any filter and discarded some of the earlier light frames.

Edit5: Restacked the data with different parameters. Now the core turns out red/brown which looks better.

Edit6: Reprocessed the image with 3 hours of new data but this time in PI. I think the newest version looks richer than older versions. A reorientation of the OTA leaded to turned spikes, hence the double crosses.

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Revisions

  • M101, bruciesheroes
    Original
  • M101, bruciesheroes
    B
  • M101, bruciesheroes
    C
  • M101, bruciesheroes
    D
  • M101, bruciesheroes
    E
  • M101, bruciesheroes
    F
  • M101, bruciesheroes
    G
  • Final
    M101, bruciesheroes
    H

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M101, bruciesheroes