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  ·  Pinwheel galaxy
Pinwheel redux 2 (M101), Trish Hamlin
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Pinwheel redux 2 (M101)

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)
Pinwheel redux 2 (M101), Trish Hamlin
Powered byPixInsight

Pinwheel redux 2 (M101)

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

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Description

My latest attempt at the pinwheel galaxy. I used a Bahtinov mask, cooled down the scope for hours, and locked in the mirror after focusing. Perhaps this is as good as I can do with livestacking and very minimal pixinsight processing (histogram stretch only). May give this one more attempt with shorter exposures at higher gain and then it will be time to move on.

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Sky plot

Sky plot

Histogram

Pinwheel redux 2 (M101), Trish Hamlin