M101/SN2023ixf (Susan)

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 · Pinwheel galaxy

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M101/SN2023ixf

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M101/SN2023ixf

I used a Stellina to capture 4,666 fits lights (3905 RGGB and 761 BGGR) over three nights: 2023-05-20, 22, 23. I converted the 761 BGGR lights to RGGB using WinBayerConvert. I downselected from 4,666 lights to 900 lights based on Astro Pixel Processor analyses, retaining only the subs that were >0.7 in quality and star shape. I used Astro Pixel Processor to stack the 900 lights with 300 RGGB darks I collected over the same three nights. I used all 300 darks because the temperature had varied from 46.9-65.1 degrees Fahrenheit - I didn't want to take any chances because I knew the APP steps would take days to complete. I edited the unstretched APP stack fits file using PixInsight. I cropped the result and edited it in PI and Photoshop. I didn't mask any part of the image during editing because I wanted to retain the relative brightness for the PixInsight 3D Plot (not that it has any scientific value.) I used PI ImageSolver to plate solve the image and used PI to create the annotated image and finding chart. (I was concerned when I saw that the stacked image had a green cast in APP, but when I opened the unstretched fits file in PI and STF autostretched it, the green cast was gone.)

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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

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	...
Astrometry.net job	7789663
PixInsight job	9DJEWTSNO8Y0HP9I0YC132EBRRWZH9HH
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m12s.60
RA (top/left)	14h06m23s.97
RA (top/right)	13h59m44s.20
RA (bottom/right)	14h00m04s.46
RA (bottom/left)	14h06m38s.30

Dec (center)	+54°20′32″.7
Dec (top/left)	+54°41′08″.0
Dec (top/right)	+54°37′11″.2
Dec (bottom/right)	+53°59′38″.3
Dec (bottom/left)	+54°03′31″.9

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M101/SN2023ixf

M101/SN2023ixf

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M101/SN2023ixf

M101/SN2023ixf

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