Abell 4 hiding in field of galaxies (lowenthalm)

Abell 4 hiding in field of galaxies

Not very happy with the star images, but the field of deep sky objects is pretty. Blue-green Abell 4 lurks near the bottom amongst scattered PGC galaxies and barred spiral UGC 2227 in the upper right and low surface brightness (except for the core) PGC 10460 to UGC 2227 lower left. The cute little edge-on spiral right next to the galaxy is 17th magnitude PGC 2201333. Oddly, Abell 4 seems to have mistakenly been given a galaxy catalog designation of PGC 10427 (Simbad database shows this error too). Sky Safari Pro plots the PGC 10427 in the right spot for Abell 4, but plots Abell 4 incorrectly 34 seconds to the southeast.

The seeing came in and out leading to bloating of many of the stars, and some loss of detail in the deep sky objects too. I captured at bin 1 (0.5 arc seconds/pixel), but resampled it to 1 arc second since the seeing didn't warrant it. Still the stars seem too large. Maybe focus was a little out, or there was some passing dew? Going to image this again when seeing is better.

Original
Final
B

B

Description: Reprocessed to improve black, color saturation and contrast. Looks a little darker because stars aren't as bloated

Uploaded: ...

Astrophotography with Dobson

All
Bests: Unusual objects
Moro
Planetary Nebula

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 failed
Started	...
Astrometry.net job	2521304
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):