Markarians Chain (of problems) wide (Bret Waddington)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: M 84 · M 86 · M 87 · M 88 · M 89 · M 90 · M 91 · NGC 4302 · NGC 4374 · NGC 4388 · NGC 4402 · NGC 4406 · NGC 4438 · NGC 4459 · NGC 4461 · NGC 4473 · NGC 4477 · NGC 4486 · NGC 4501 · NGC 4548 · NGC 4552 · NGC 4569 · NGC 4571 · Virgo Galaxy

Markarians Chain (of problems) wide, Bret Waddington

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Markarians Chain (of problems) wide

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Markarians Chain (of problems) wide

Poor seeing.
Everything pre set up in SGP, when ready to start camera would not connect. No problem with this previously, but been a while since using the DSLR with SGP.
Switched to BYN.
Poor tracking, combination of seeing and the camera/lens combo possibly too light for the mount.
Added a dual plate so I could use a guide scope, poor balance because the weights didn't match closely enough. But it was an improvement.
180 seconds maximum exposure for round stars forced me to use iso 800. I prefer iso 200 with this camera.
F5.6 not giving me good stars out to the corners, but stopping down would require longer exposure or higher iso.
Clouds forced me to toss more frames than I kept.
I had problems making my flats work, probably because of the iso and F5.6. Took three sets before getting something I could work with.
After processing I noticed walking noise, dithering was set up but for some reason it never happened.

Uploaded image to Astrobin, typed all this up. Lost internet connection before completing. When internet was back up the image was the only thing still here.

Cloudy Nights

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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
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	7636016
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Markarians Chain (of problems) wide

Markarians Chain (of problems) wide

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Markarians Chain (of problems) wide

Markarians Chain (of problems) wide

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