Supernova SN2023ixf in Messier 101: Before and After (Paul Macklin)

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 5477 · PGC 2464645 · PGC 2468609 · PGC 2468675 · PGC 2469762 · PGC 2471644 · PGC 2816075 · Pinwheel galaxy · SS UMa

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Supernova SN2023ixf in Messier 101: Before and After

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Supernova SN2023ixf in Messier 101: Before and After

As luck would have it, I was imaging Messier 101 just before the new supernova SN 2023ixf hit, so I was able to capture it before and after.

On May 16, 2023, the supernova was not evident on 5 hours of 3 min stacked exposures.

On May 20, 2023, even 3-minute exposures on a 115mm refractor showed a brilliant blue-white supernova!

I tried to process both "before" and "after" as similarly as possible.

Press appearances:
* Included in EarthSky's selected user submissions [link]
* To appear in Fifth Star Lab's Sky Guide
* Appeared in New Scientist [link]
* Appeared in an ExtendedForecast story (without credit, grumble grumble). [link]

The OSC Club (One Shot Camera)
Fine Art Astrophotography

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape
Artificial satellite

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
PixInsight job	FR6AOYACECJRESTJLI307ZD9KHN35HMZ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h04m43s.816
RA (top/left)	14h01m38s.602
RA (top/right)	14h07m42s.244
RA (bottom/right)	14h07m53s.652
RA (bottom/left)	14h01m43s.204

Dec (center)	+54°24′30″.31
Dec (top/left)	+54°03′43″.92
Dec (top/right)	+54°02′08″.46
Dec (bottom/right)	+54°45′09″.59
Dec (bottom/left)	+54°46′27″.25

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Supernova SN2023ixf in Messier 101: Before and After

Supernova SN2023ixf in Messier 101: Before and After

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Supernova SN2023ixf in Messier 101: Before and After

Supernova SN2023ixf in Messier 101: Before and After

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