NGC 891 (Denis Dumas)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: NGC 891 · PGC 2193819 · PGC 2194478 · PGC 2199276 · PGC 9101

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NGC 891

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NGC 891

Well, it has been exactly one year since I started this hobby of astrophotography!

I am still working out issues with my setup - I finally set my backfocus correctly so this image plate solves to the correct focal length, and there is a lot less distortion of the stars but it is not all gone. I have some guiding issues to improve, and my star colors are still a little off but much better than my last images. I am also learning tons on how to use PixInsight so my image processing continues to improve.

This evening the moon was a few days old and set very early, so it was a moonless night.
Average to below average transparency.
Average seeing.
Temperature dropped to 0C during the night, lots of dew and frost buildup on my equipment.

Original
B
Final
C

B

Description: Adjusted the colors slightly, toned down saturation on stars

Uploaded: ...

C

Description: Continue working on stars, deconvolution for blurring and morphological transformation to dim stars and improve colors.

Uploaded: ...

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	5239163
PixInsight job	EEP5L2WTDRRFXY944N4UW715RG7RNWHB
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h22m33s.347
RA (top/left)	02h23m55s.729
RA (top/right)	02h21m07s.349
RA (bottom/right)	02h21m11s.442
RA (bottom/left)	02h23m58s.894

Dec (center)	+42°20′55″.95
Dec (top/left)	+42°31′49″.81
Dec (top/right)	+42°30′49″.69
Dec (bottom/right)	+42°09′58″.42
Dec (bottom/left)	+42°10′58″.21

Image Index:

Contribution Index (beta):

NGC 891

NGC 891

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C

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Image Index:

Contribution Index (beta):

NGC 891

NGC 891

Equipment

Acquisition details

Description

Comments

Revisions

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C

Sky plot

Histogram

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