M101 "A Pinwheel with over a Trillion Stars" (Steve Argereow)

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 · NGC 5473 · NGC 5477 · Pinwheel galaxy

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M101 "A Pinwheel with over a Trillion Stars"

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M101 "A Pinwheel with over a Trillion Stars"

M101 is a large face-on spiral galaxy located 22 million light-years away in the constellation of Ursa Major. At magnitude +7.9. M101 is also known as the Pinwheelgalaxy and was discovered by Pierre Méchain on March 27, 1781. He described it as "nebula without star, very obscure and pretty large. He communicated this to Charles Messier, who verified its position and then included it in his catalogue as one of the final entries. M101 is 180,000 Light-Years in diameter, with over 1 Trillion, Stars!

Information Credits: Home Free Star Charts

Telescope: Explorer Scientific 127mm CF APO Refractor f/7.5 (952mm Focal Length)
Explore Scientific X0.7 Reducer f/5.25 (667mm Focal Length)
Mount IOptron CEM40
Camera ZWOASI6200MC-Pro Temp -10C, Binning 1 x 1, Gain 100 Offset 50
ZWO EFW

45 X 240 Second Exposures W/Optolong L-Pro Filter 3 Hours - 4/19/2022
24 X 300 Second Exposures W/Optolong L-Pro Filter 2 Hours - 4/21/2022
30 X 360 Second Exposures W/Optolong L-Pro Filter 3 Hours - 4/22/2022
40 Dark Frames 30 Flats
Total Integration Time: 8 Hours 0 Minutes
Acquisition with SharpCap
Stacked with Astro Pixel Processor
Guiding PHD2
Processed with Astra Image/GIMP
Photo taken from Seven Lakes, NC Bortle 4.5

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Status	Advanced success
Started	...
Astrometry.net job	5702530
PixInsight job	DDXQPJJ74I8Q8DH12O44OUVH0QSYTISQ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m05s.13
RA (top/left)	14h06m10s.37
RA (top/right)	14h06m34s.74
RA (bottom/right)	13h59m54s.60
RA (bottom/left)	13h59m41s.34

Dec (center)	+54°25′55″.8
Dec (top/left)	+53°48′24″.10
Dec (top/right)	+55°01′00″.2
Dec (bottom/right)	+55°03′10″.2
Dec (bottom/left)	+53°50′31″.0

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M101 "A Pinwheel with over a Trillion Stars"

M101 "A Pinwheel with over a Trillion Stars"

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M101 "A Pinwheel with over a Trillion Stars"

M101 "A Pinwheel with over a Trillion Stars"

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