M101 - The Pinwheel Galaxy (James R Potts)

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 - The Pinwheel Galaxy

Revision title: Cropped and added saturation

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M101 - The Pinwheel Galaxy

Revision title: Cropped and added saturation

Here is just over 11 hours over the past couple of nights, could have been more, but winds really started picking up the first night. I tried using a NB filter to pull out the red, but it did not work as well as I hoped. Tried 3 different filters and several different exposures. It has been really windy and dusty, so I have struggled to keep the lens clean. Overall this did not come as good as I hoped, probably because of the winds and dust, but I guess it isn't a terrible image.

M101 is a very large galaxy in the constellation Ursa Major that is around 27 million light years away. It is estimated to have a linear diameter of around 170,000 light years, which is about twice the size of our Milky Way Galaxy.

Original
B
C
Final
D

B

Title: Revised adding Ha

Description: I was not real pleased with my first image as I could not bring out the core. I had taken several images with a NB Antila Filter (Ha & OIII), but could not inter-grate the HA/OIII into the image the way I wanted. So I re-processed the IR/Cut and L Pro images, then used APP to separate the channels into RGB and used APP to extract the Ha from my NB images. Then used APP's HaRGB combine template. So here is my same image just re-processed to bring out the core better. I am much happier with this image.

Uploaded: ...

C

Title: Cropped version of the revised image

Description: Let me know which one you like and if you think I over saturated this image.

Uploaded: ...

D

Title: Cropped and added saturation

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	5661468
PixInsight job	BBDWFD0N7OUD68V8EHLXRJAYG13MPTG6
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m10s.120
RA (top/left)	14h04m36s.250
RA (top/right)	14h05m56s.944
RA (bottom/right)	14h01m41s.904
RA (bottom/left)	14h00m25s.840

Dec (center)	+54°21′10″.18
Dec (top/left)	+53°55′07″.19
Dec (top/right)	+54°36′55″.18
Dec (bottom/right)	+54°47′07″.70
Dec (bottom/left)	+54°05′09″.28

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M101 - The Pinwheel Galaxy

Revision title: Cropped and added saturation

M101 - The Pinwheel Galaxy

Revision title: Cropped and added saturation

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M101 - The Pinwheel Galaxy

Revision title: Cropped and added saturation

M101 - The Pinwheel Galaxy

Revision title: Cropped and added saturation

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