Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5447  ·  NGC 5449  ·  NGC 5450  ·  NGC 5451  ·  NGC 5453  ·  NGC 5455  ·  NGC 5457  ·  NGC 5461  ·  NGC 5462  ·  NGC 5471  ·  NGC 5477  ·  Pinwheel galaxy
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M101 Pinwheel Galaxy, Jeff Weiss
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M101 Pinwheel Galaxy

Getting plate-solving status, please wait...
M101 Pinwheel Galaxy, Jeff Weiss
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M101 Pinwheel Galaxy

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Description

Face-on galaxy at 27MLY in UMa and twice the size of the Milky Way, it has a low surface brightness and is quite asymmetric. It probably underwent a major collision to cause its strong asymmetry. It has a large number of HII regions with hot young stars.

HaLRGB combination done adding Ha to Red only.



5/10/12-Mercy Hot Springs, CA; 5/12/12 Ha: Montebello OSP, CA

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Revisions

  • M101 Pinwheel Galaxy, Jeff Weiss
    Original
  • M101 Pinwheel Galaxy, Jeff Weiss
    B
  • Final
    M101 Pinwheel Galaxy, Jeff Weiss
    D

D

Description: restored 3/6/2020

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M101 Pinwheel Galaxy, Jeff Weiss