HFG1 & Abell 6 HOO RGB (Data 2022+2023) (JLastro)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas)

HFG1 & Abell 6 HOO RGB (Data 2022+2023), JLastro

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HFG1 & Abell 6 HOO RGB (Data 2022+2023)

Link: www.jlastrophoto.com

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

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HFG1 & Abell 6 HOO RGB (Data 2022+2023)

Link: www.jlastrophoto.com

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

2022 and 2023 data compiled with WBPP, which gives a very detailed image of these 2 remarkable objects in the Cassiopeia constellation.

HFG1 and Abell 6 form a unique pair of planetary nebulae, very interesting to image with narrow-band filters.

HFG1 takes its name from its three discoverers: Heckathorn, Fesen and Gull. Its central star V664 Case, from mag. 14.5 is a pre-cataclysmic tight binary.
One publication suggests that HFG1 leaves behind a gas tail emitting in the Ha and NII waveloggers. This tail of at least 20' extends towards the northwest and is approximately 10,000 years old.
HFG1 itself presents an interesting structure, with an arc opposite the tail, that is to say in the direction of movement of the nebula, which suggests that it is a front of shock wave of matter interacting with the interstellar medium. We also note three brighter lobes in the OIII line and a weaker central zone where the Ha signal dominates.

Abell 6 is a classic example of a bubble from this catalog (type 2b), but also remains quite weak (mag=15.0), with a stronger OIII emission than in Ha. However, its structure presents irregularities with in particular two fine lobes at the east and west edges. Its dimensions are 188x174" (source Astrosurf)

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Description: Better contrast on Abell 6 and improvements

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	Distinct awarded users	Total awarded images
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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
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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
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Amateur hosting facility
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Professional, scientific grade data
Mix of multiple sources
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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
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Astrometry.net job	8527967
PixInsight job	n/a
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HFG1 & Abell 6 HOO RGB (Data 2022+2023)

HFG1 & Abell 6 HOO RGB (Data 2022+2023)

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Image Index:

Contribution Index (beta):

HFG1 & Abell 6 HOO RGB (Data 2022+2023)

HFG1 & Abell 6 HOO RGB (Data 2022+2023)

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Comments

Revisions

B

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