Abell 31 (Brendan Kinch)

Celestial hemisphere: Northern · Constellation: Cancer (Cnc) · Contains: IC 523

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Abell 31

Link: https://www.kinchastro.com/abell-31-2021.html

Powered byPixInsight

Abell 31

Link: https://www.kinchastro.com/abell-31-2021.html

Abell 31 (or PK219+31.1) is an ancient planetary nebula in the constellation of Cancer. It is estimated to be about 2,000 light years away. Although it is one of the largest planetary nebulae in the sky, it is not very bright and not so easy to image. Its shape is caused by interaction with the interstellar medium, as it is moving through space at high speed. The PN was discovered in 1955 by George Abell on the POSS plates.
Some might find it interesting to note that the spiral galaxy IC523 (upper left in the annotated image) is an estimated 386 million light years from the Milky Way.

Imaging telescope: Takahashi FSQ130ED
Imaging cameras: QSI 6120i
Mounts: Takahashi EM 400 Temma 2
Guiding cameras:QHY CCD QHY 5 II
Focal Extender / Reducer: Tak QE 0.73x used in Feb.
Software: PHD 2, Astro Pixel Processer, PixInsight , Sequence Generator Pro SGP
Filters: Astrodon Ha (5nm), OIII (5nm) & Astrodon RGB
Accessories: ATIK EFW2

Frames:
Astrodon Ha: 24x900" + 13x1200"
Astrodon OIII: 24x900" + 18x1200
Astrodon RGB: 45x120""
Integration: 23 Hours 30 Mins.

Takahashi Refractors

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 success
Started	...
Astrometry.net job	6607630
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Abell 31

Abell 31

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Abell 31

Abell 31

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