NGC281 (Cas) / Sh 2-184 (firstLight)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1590 · NGC 281

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NGC281 (Cas) / Sh 2-184

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NGC281 (Cas) / Sh 2-184

NGC281 (Cas ) / Sh 2-184

The first of five nights in row after August 2023's new moon very suitable for DeepSky imaging: No high or low clouds, good to very good seeing, no star flickering, very dark again and clear, without wind and dew fall.

Despite my Astroberry setup on a RasPi4 worked very good for a GoTo from the zero position to a bright star followed by immediate plate solving for the reason of a good manual focusing ... then back to zero position, the polar alignment (PA) failed numerous times and left me clueless: The same plate solving I used before to select a bright star for focusing, now continuously failed plate solving for PA.

A couple of times I reset, shut down and restarted everything from scratch, one after another and triple checked everything I did or intended to do .... to no avail: No PA for over 3 hours!

Recently I read in the indilib forum about a bug or changed default someone reported ... and I felt familiar to this strange behavior I hadn't faced last winter when everything "just worked".

Instead of starting my imaging session at 22:30h/23:00h (CEST) I could only start at almost 02:00h ... with only 2:00-2:30 hours of remaining darkness left. I had intended to capture M13 (Her) for at lest 4 hours but this target was close to the mountains on the west side of our valley already.

So I instantly decided to try NGC281 (Cas) which was close to zenith to get at least something.

This image is my result from the final 2 hours capturing session.

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	Distinct awarded users	Total awarded images
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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
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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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.
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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	8375046
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC281 (Cas) / Sh 2-184

NGC281 (Cas) / Sh 2-184

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NGC281 (Cas) / Sh 2-184

NGC281 (Cas) / Sh 2-184

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