Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5422  ·  NGC 5443  ·  NGC 5457  ·  NGC 5473  ·  NGC 5474  ·  NGC 5485
M101 with ST80, Dan Phillips
M101 with ST80
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M101 with ST80

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Description

Another aperture-stacked image:

161x60" @ full aperture (f/5)

35x30" @ f/9 (stopped down with cap), for much better results on bright stars

combined with masks in GIMP

Drove to a blue zone for this one.

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Sky plot

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M101 with ST80, Dan Phillips