He 1-5 Variable Star Planetary Nebula (Jerry Yesavage)

He 1-5 Variable Star Planetary Nebula

This was an Astrobin debut image by Gary Imm, in whose footsteps I travel. Gary has a great write up about this possibly including a variable helium star. I'll not repeat his write up. But just present the central area in more detail in greyscale. The central star remains elusive to me (big blob foreground), maybe one of the smaller blobs in there, but others can see it and measure changes in its spectrum, but over 30 years.

I found this on the following site while looking for novel small PNs.

https://heasarc.gsfc.nasa.gov/W3Browse/nebula-catalog/plnebulae.html

These are instructions and the "Search" is at the top line.

You can set your search criteria as to RA & DEC as well as size. This guy is 29 Arc" across.

No point in presenting color as I wanted the details. Processing is BlurX, Noise X the GHS twice to split the details, HDRMT, followed by NoiseX again as the noise gets enhanced with the stretching. There was still some salt and pepper left that I quashed with Topaz AI. So this has AI used on it ? 5 times, but I do not thing it is over processed.

Original
B
Final
C
D

B

Description: Additional 1h H-alpha added.

Uploaded: ...

C

Description: Additional Topaz AI Denoising added to clobber speckles.

Uploaded: ...

D

Description: Context

Uploaded: ...

ASI 6200 MM Pro
Cloudy Nights
Rarely Imaged Small DSOs
GHS Made a Substantial Difference
Narrowband imaging

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	8536907
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):