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  ·  Pinwheel galaxy
Getting plate-solving status, please wait...
17.5hr M101 Pinwheel Galaxy, Jeff Weiss
Powered byPixInsight

17.5hr M101 Pinwheel Galaxy

Getting plate-solving status, please wait...
17.5hr M101 Pinwheel Galaxy, Jeff Weiss
Powered byPixInsight

17.5hr M101 Pinwheel Galaxy

Equipment

Loading...

Acquisition details

Loading...

Description

Classic 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.

12.3 hr HaLRGB imaged at D.A.R.C. Observatory, Mercey Hot Springs, CA.

6/5/16, 4/21/17, 5/27/17, 5/28/17       SQM 21.4 to 21.6

----------------------------------------------------------------------------------------------
Version N Adds 5.2 hrs of HaLRGB from 2012 for new Total Exposure 
(2016-7 & 2012):  17.5 hrs

5/10/12: D.A.R.C. Obs, Mercy Hot Springs, CA and 5/12/12 Ha: Montebello OSP, CA
Same equipment except  SBIG ST2000M camera

Comments

Revisions

    17.5hr M101 Pinwheel Galaxy, Jeff Weiss
    Original
    17.5hr M101 Pinwheel Galaxy, Jeff Weiss
    D
    17.5hr M101 Pinwheel Galaxy, Jeff Weiss
    M
  • Final
    17.5hr M101 Pinwheel Galaxy, Jeff Weiss
    N

Sky plot

Sky plot

Histogram

17.5hr M101 Pinwheel Galaxy, Jeff Weiss