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

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Powered byPixInsight

M101/SN2023ixf

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

I used a different workflow for this stacked Stellina image.

I color calibrated the image with PI's SPCC (SpectroPhotometric Color Calibration) instead of using APP background and star color calibration as shown in the original image I uploaded. I made this image because I wanted to strike a balance between the two - get rid of the pink galaxy center from the APP calibration and keep the yellow galaxy center from the PI SPCC calibration. The yellow galaxy center seems more correct when comparing to a NASA image.

Workflow for this image:

Open unstretched, uncalibrated, unedited APP stack fits file in PI; unlinked STF stretch; save as xisf 32-bit floating point; Crop; Fast Rotation to correct orientation; ABE (or DBE); Image Solver; SPCC; BXT nonstellar-only 0.25; NXT 0.80/0.15; convert to nonlinear with STF/Histogram Transformation; StarNet2.

Starmask: SCNR Green 1.00; Curves Transformation increase saturation; Correct Magenta Stars 0.60.

Starless: Canon Banding Reduction; SCNR Green 0.60; Range Selection/Curves Transformation/SCNR to isolate galaxy and highlights, decrease background saturation, enhance galaxy color, remove some residual green; NXT 0.90/0.15; remove range selection; Curves Transformation RGB/K to darken background.
Recombine starless and starmask with Pixel Math.

Photoshop: color noise reduction, color mixer to increase orange and yellow star saturation and a slight shift in temperature to blue.

At least, that's how I remember it - I experiment and backtrack as I go.

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

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	7801094
PixInsight job	TIACDSNPGBPEG2ZQZXLN89YMIB06GPPB
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m11s.59
RA (top/left)	14h06m23s.95
RA (top/right)	13h59m41s.97
RA (bottom/right)	14h00m02s.40
RA (bottom/left)	14h06m38s.31

Dec (center)	+54°20′27″.6
Dec (top/left)	+54°40′58″.7
Dec (top/right)	+54°36′59″.4
Dec (bottom/right)	+53°59′37″.10
Dec (bottom/left)	+54°03′33″.1

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M101/SN2023ixf

M101/SN2023ixf

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Image Index:

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M101/SN2023ixf

M101/SN2023ixf

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