M101, Pinwheel Galaxy (with and without the 0.63x FR) (Dev (Dave) Prana)

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 · Pinwheel galaxy

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M101, Pinwheel Galaxy (with and without the 0.63x FR)

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M101, Pinwheel Galaxy (with and without the 0.63x FR)

M101 - The Pinwheel Galaxy redone from scratch!

It is a face-on spiral galaxy 21 million light-years away from Earth in the constellation Ursa Major. It was discovered by Pierre Méchain in 1781 and was communicated that year to Charles Messier, who verified its position for inclusion in the Messier Catalogue as one of its final entries. (Wikipedia)

Late April, during the 1st night trial of the EAF and Bathinov mask for the Nexstar Evo 8" SCT @ F10, I was able to collect 15 x 3min and 8 x 5min subs, originally stacked in DSS and processed in Pixinsight and Paintshop pro. DSS had only picked 8 light subs, but I was able to restack and process in Pixinsight the same data, with 20 darks and 30 lights for each set: Full set of 15 x 180sec and 8 x 300sec light subs. Today, I restacked the same data with the M101 data from summer of 2022 using the Nexstar Evo 8 SCT, but @ 1350mm using the 0.63 focal reducer.

Final
Original
B
C

B

Title: Pinwheel upside down

Uploaded: ...

C

Title: Pinwheel galaxy, upside down - right

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	7147834
PixInsight job	ZCK6VG4BL04WS2YOXYDJG0DNZS74PVLG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m12s.262
RA (top/left)	14h04m47s.120
RA (top/right)	14h04m49s.882
RA (bottom/right)	14h01m36s.146
RA (bottom/left)	14h01m35s.988

Dec (center)	+54°21′14″.27
Dec (top/left)	+54°03′09″.92
Dec (top/right)	+54°38′59″.99
Dec (bottom/right)	+54°39′10″.40
Dec (bottom/left)	+54°03′16″.73

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M101, Pinwheel Galaxy (with and without the 0.63x FR)

M101, Pinwheel Galaxy (with and without the 0.63x FR)

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Image Index:

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M101, Pinwheel Galaxy (with and without the 0.63x FR)

M101, Pinwheel Galaxy (with and without the 0.63x FR)

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