Markarians Chain (John R Carter, Sr.)

Celestial hemisphere: Northern · Constellation: Virgo (Vir) · Contains: IC 3280 · IC 3303 · IC 3311 · IC 3344 · IC 3349 · IC 3355 · IC 3363 · IC 3382 · IC 3388 · IC 3393 · IC 3443 · M 84 · M 86 · M 87 · NGC 4374 · NGC 4387 · NGC 4388 · NGC 4402 · NGC 4406 · NGC 4413 · NGC 4425 · NGC 4431 · NGC 4435 · NGC 4436 · NGC 4438 · NGC 4440 · NGC 4446 · NGC 4447 · NGC 4458 · NGC 4459 · And 11 more.

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Markarians Chain

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Markarians Chain

I took this image set three years ago and just now getting around to processing it.

This was a hopeful experiment at the time. The Flats, Bias, and Dark images were all taken separately on different dates, so even the processing of this set of Lights is an experiment. To further add to the experiment, this is the first image set fully processed with Affinity Photo v1.9.1 (with the exception of the Darks and Bias which were integrated with PixInsight) using the new Astrophotography tools from stacking to final processing. Without using the video tutorial by James Ritsin, Product Expert for Affinity Photo, this would have been impossible for me.

Normally, I would attempt this with PixInsight, which I tried and which fell apart quickly, first during the stacking process and finally during the initial background removal. So discovering that Affinity Photo would stack the images and then process everything successfully was a real coup for Affinity Photo. Finally, the time to stack the images was less than 10 minutes for Affinity Photo and more than an hour for PixInsight, so that's another feather in the cap for Affinity Photo.

This image set far outshines my original Markarians Chain which was shot with a Canon 60D on an 80mm refractor.

Due to a poor set of Flats, I was forced to crop this image severely from the original. Still, with the Affinity Photo processing techniques that I have learned, as minimal as they are, I am quite pleased with how this turned out. Basically, I have saved an otherwise forgotten image.

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	4295473
PixInsight job	E1G1K0KOM0P2NH6C48L59VE255CCJAX8
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	12h27m47s.34
RA (top/left)	12h23m46s.16
RA (top/right)	12h31m48s.89
RA (bottom/right)	12h31m49s.89
RA (bottom/left)	12h23m43s.71

Dec (center)	+13°08′50″.7
Dec (top/left)	+12°13′06″.8
Dec (top/right)	+12°13′19″.7
Dec (bottom/right)	+14°04′14″.9
Dec (bottom/left)	+14°04′08″.2

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Markarians Chain

Markarians Chain

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Image Index:

Contribution Index (beta):

Markarians Chain

Markarians Chain

Equipment

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Description

Comments

Sky plot

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