Messier 101, the Pinwheel Galaxy on June 10th, 2019 (Evelyn Decker)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5457

Messier 101, the Pinwheel Galaxy on June 10th, 2019, Evelyn Decker

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Messier 101, the Pinwheel Galaxy on June 10th, 2019

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Messier 101, the Pinwheel Galaxy on June 10th, 2019

This target was a bit off plan from what I had in mind for the day I imaged this object (I originally planned to do Hydrogen-Alpha of Messier 16, but sudden plans came up forcing me to set up in a different location so I can sleep while acquiring data). It's getting to the part of the season when I gotta adjust my gain a bit to combat color noise and readout noise, since this was really hard to process... I might plan on reprocessing from scratch again, but for now I feel satisfied with this one. This image gives me confidence to perform autoguiding more often, since it has potential to do more than double my exposure per subframe with my main scope.

*The color balance of the object seems a bit lacking, so I'll probably play around with the data more to work on a more natural tone of the object.

Original
B
C
Final
D

B

Description: Restructured the individual RGB channels to correct both oversaturation and color imbalance. Reused old image as luminence to balance background sky.

Uploaded: ...

C

Description: Select and Mask + Noise Reduction, less crunchy/more fuzzy, background color balancing.

Uploaded: ...

D

Description: Reprocessed with different stacking method, amp-glow strongly reduced, noise handled differently, better color, better contrast. Got rid of the bias frames, as they gummed up my dark frames' ability to reduce amp-glow

Uploaded: ...

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Status	Basic success
Started	...
Astrometry.net job	2749191
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Messier 101, the Pinwheel Galaxy on June 10th, 2019

Messier 101, the Pinwheel Galaxy on June 10th, 2019

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Messier 101, the Pinwheel Galaxy on June 10th, 2019

Messier 101, the Pinwheel Galaxy on June 10th, 2019

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