Abell 31 (Dan Gallo)

Celestial hemisphere: Northern · Constellation: Cancer (Cnc) · Contains: IC 523 · PK219+31.1 · Sh2-290

Powered byPixInsight

Abell 31

Powered byPixInsight

Abell 31

I tested out my new filter from Altair Astro - a QuadBand OSC narrowband filter. Unfortunately the clouds rolled in later in the night, so I could only capture 26 usable frames using the new filter. It's going to be cloudy for at least the next week, so I decided to just process it with some light frames I already captured using the Optolong L-eNhance filter.

In the limited data I captured, the Altair QuadBand filter does appear to help me get better results with my RASA - there is noticeably more faint red nebulosity in the Altair QuadBand light frames compared to the L-eNhance light frames.

When I've previously been processing data captured with the RASA and L-eNhance filter, I've noticed I don't always pick up much faint red nebulosity. I attributed this to the narrower bandwidth of the red channel (10nm). In comparison, the Altair QuadBand filter has a wider bandwidth of 35nm on the red channel.

I immediately noticed more red nebulosity in the light frames - it's faint (this target is faint anyway), but much more prominent than in the L-eNhance light frames captured under similar conditions a few nights prior.

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
Artificial satellite

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	...
PixInsight job	85J8IWTHPV32TDRGJI5Q161651M2A14R
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	08h54m09s.25
RA (top/left)	08h51m47s.15
RA (top/right)	08h56m24s.49
RA (bottom/right)	08h56m31s.97
RA (bottom/left)	08h51m53s.40

Dec (center)	+08°55′33″.8
Dec (top/left)	+08°06′57″.1
Dec (top/right)	+08°05′46″.9
Dec (bottom/right)	+09°44′06″.10
Dec (bottom/left)	+09°45′17″.2

AstroBin

AstroBin

Image Index:

Contribution Index (beta):

Abell 31

Abell 31

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

AstroBin

AstroBin

Image Index:

Contribution Index (beta):

Abell 31

Abell 31

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Error

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information