HFG1 and Abell 6 (José Manuel López Arlandis)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas)

Powered byPixInsight

HFG1 and Abell 6

Powered byPixInsight

HFG1 and Abell 6

In the field of photography there are two planetary nebulae. Both are visible in the Cassiopeia constellation, about 4º north of the Soul Nebula and on the border with Draco. The large one, HFG1 (Heckathorn-Fesen-Gull 1), is an old planetary nebula. It is about 10,000 years old. Being close to retirement, he has lost his forms under the influence of interaction with the environment. Its central star is a binary of magnitude 14.5, composed of a white dwarf and a red giant, which rotate around each other in about 14 hours. It is a precataclysmic double star, since the two stars are very close and are getting closer and closer to each other. Both are heading rapidly southeast into the interior of our galaxy. The surrounding gas has a bright and circular shock front, very visible with the OIII filter (blue), while behind it leaves a reddish tail of hydrogen visible in HII, extensive, about 20' of arc, formed by the gas lost by the red giant blown by strong stellar winds. Abell 6 is about 40' arc southwest of HFG1. It is a typical young, bubble-shaped planetary nebula. The OIII signal predominates in it, and the bluish central star is visible. They are faint nebulae, especially HFG1. They require a long exposure to capture their blue tones against the tail and HII cloud background. I took the photo on 12 nights in November and December, with a shorter exposure for the stars in RGB (1h 45m), 17h 25m in HII and 19h 25m in OIII. I did part of the shots in bin x1 and part in bin x 2. Newton Orion UK AG10 tube with Winne 0.95 corrector, and QHY268M camera. The color palette is pure HOO.

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	9045750
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

HFG1 and Abell 6

HFG1 and Abell 6

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

HFG1 and Abell 6

HFG1 and Abell 6

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

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information