M31, Andromeda Galaxy (Rob Foster)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda Galaxy · HD3969 · HD4143 · HD4174 · HD4322 · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224

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M31, Andromeda Galaxy

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M31, Andromeda Galaxy

This effort represented 5:56 hours of accumulated data from 9 sessions between September 9 and November 23, 2021, most were shot at ISO 800 and 180s, though the exposures ranged from 30s to 300s and the ISOs 800-1600. The Pixinsight WBPP Keyword SESSION made this incredibly easy to organize, and the final image used Drizzle Integration. Interestingly, Photometric Color Calibration continued to fail even when halving the Pixel size to account for the DI, even after changing several other PCC parameters. I finally opened the FITS header of the Master Light and found the DATE-OBS field corresponded to what I had used for the registration reference frame, but the DATE-END field was different. Once I changed the PCC Date to the DATE-END field, it solved the image quickly. Lesson learned, I suppose, at least for this particular image.

DSLR and mirrorless astrophotography
PixInsight Addicts
Imaged with N.I.N.A.
N.I.N.A. Users

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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
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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	5662178
PixInsight job	7ULK8JFJNVWA9X4STBYUKP0M6PRVNRBF
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h42m41s.220
RA (top/left)	00h45m52s.636
RA (top/right)	00h47m01s.393
RA (bottom/right)	00h39m23s.120
RA (bottom/left)	00h38m28s.114

Dec (center)	+41°10′52″.63
Dec (top/left)	+40°09′32″.52
Dec (top/right)	+42°03′15″.86
Dec (bottom/right)	+42°12′02″.41
Dec (bottom/left)	+40°18′04″.65

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M31, Andromeda Galaxy

M31, Andromeda Galaxy

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M31, Andromeda Galaxy

M31, Andromeda Galaxy

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