Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5422  ·  NGC 5457  ·  NGC 5473  ·  The star 86UMa
Pinwheel Galaxy M101, CHUN-YU CHEN
Pinwheel Galaxy M101
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Pinwheel Galaxy M101

Pinwheel Galaxy M101, CHUN-YU CHEN
Pinwheel Galaxy M101
Powered byPixInsight

Pinwheel Galaxy M101

Equipment

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Description

Took this one at beginning of the month near Morgan Hill, CA, magnitude is 7.9.

I guess this is the best I can get with my current gear.

Lens: Tamron SP 500mm mirror lens

Camera: Unmodified A7RIII

Mount: SkyWatcher Star Adventure

Light Frame: 168 X 30s F8 ISO 1600

Dark Frame: 42 X 30s F8 ISO 1600

I did use Bias Frame and Flat Frame but I re-use a pre processed one, did not bother redo every time.

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Pinwheel Galaxy M101, CHUN-YU CHEN