M31 Mosaic 2022 (Remco Hekker)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda Galaxy · HD3765 · HD3969 · HD4501 · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224

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M31 Mosaic 2022

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M31 Mosaic 2022

Project #0030

M31 was the first target I ever shot and processed to the end. So it seemed a good idea to come back a couple of years later and see how far I've come so far.
Also, I really wanted to experiment with making a mosaic, and a 2 panel mosaic of M31 seemed like a modest first try.

Well I ran into a lot of problems. In short: A lot of images wouldn't register, and both images had a severe gradient (which I never have in my images) which made the mosaic process and especially the background removal a big challenge.
There were multiple times where I didn't believe I could get any image from my data, let alone a nice one.

I learned a lot during the processing of this image and for now I'm happy with how it turned out. However there are still some areas where I think I can do better. So I think I'm not done with this one.

M31 First Light

Final
Original
B

B

Title: Starless version for starreduction process

Description: I created this starless version as part of my star-reduction process. And although I generally don't publish starless images, I like this one a little too much to simply throw away. So I thought I'd post it here as an alternative version.

Uploaded: ...

INDI Users
ASI533MC Pro
Skywatcher Evostar 72ED
Dutch Imagers

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	6688138
PixInsight job	TYR6OS99U6D7ILPDH30WSHB1CH1EIEOJ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h42m08s.118
RA (top/left)	00h40m35s.684
RA (top/right)	00h49m18s.162
RA (bottom/right)	00h43m45s.550
RA (bottom/left)	00h35m06s.967

Dec (center)	+41°22′36″.20
Dec (top/left)	+39°54′52″.69
Dec (top/right)	+42°02′13″.41
Dec (bottom/right)	+42°50′17″.76
Dec (bottom/left)	+40°41′25″.24

Image Index:

Contribution Index (beta):

M31 Mosaic 2022

M31 Mosaic 2022

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Image Index:

Contribution Index (beta):

M31 Mosaic 2022

M31 Mosaic 2022

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

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