M31 (Casey Offord)

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

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M31

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

Powered byPixInsight

M31

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

This was my first real effort wih my ASI533MC Pro other than a few test runs. This was also my first full process flow using PixInsight. My masks need some work and I'd like to figure out how to avoid bloated stars, but this is my best effort to date. PixInsight is really powerful and I learn something new each time I use it. This data seems pretty good so I'll probably revisit this at some point.

I planned (and took) 80 exposures, but noticed after 20 that the guiding error was large after dithering. I changed the delay after dithering to 10 seconds for the remaining 60, and used those for the integrated image. You could definitely see a difference in the subs!

I only cropped about 10 pixels from the edges to remove the dithering artifacts, so this is basically the whole field. I might try a 0.8x focal reducer next time.

Any suggestions or comments are most welcome.

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	Basic success
Started	...
Astrometry.net job	5198377
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M31

M31

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Image Index:

Contribution Index (beta):

M31

M31

Equipment

Acquisition details

Description

Comments

Sky plot

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