Sh2 192, 193, 194 and 196 Hydrogen Alpha and RGB (Jerry Yesavage)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Sh2-192 · Sh2-193 · Sh2-194 · Sh2-196

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Sh2 192, 193, 194 and 196 Hydrogen Alpha and RGB

Powered byPixInsight

Sh2 192, 193, 194 and 196 Hydrogen Alpha and RGB

Sh2 196 is the one in the upper left, the three in the center are respectively from the upper left in clockwise direction: 193, 192 and 194.

The stars in this one are the result of attending a few lectures at AIC this year.

Somebody said a good way to get clean stars is to use the luminosity from the RGB. So I denoised the RGB in Photoshop and clipped it heavily to remove background and tighten the stars. Then I extracted the L from these RGB stars. The stars produced in Pixinsight Star Net++ have some sort of masking artifact around them.

So I added these stars back into the denoised destarred versions of the HA, merged with the RGB (red channel) and then used this HA as L, all in Photoshop (standard procedures).

Then, back in Pixinsight I took the final images and subtracted the stars in L from the final image and then added back in the RGB stars. Unless I did the subtraction the stars were all white.

Suburban Astrophotography
Narrowband imaging
Sharpless2 Objects
Light Polluted skies
Cloudy Nights
SF Bay Area Imagers
Members of Deep Sky West
"Simply Stellarvue"

Sharpless2 Objects

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	Advanced success
Started	...
Astrometry.net job	3069965
PixInsight job	XU6U527PY0SJ5TENZZIYFOSN0RSMGHR4
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	02h47m29s.13
RA (top/left)	02h52m13s.35
RA (top/right)	02h42m39s.82
RA (bottom/right)	02h42m52s.17
RA (bottom/left)	02h52m11s.80

Dec (center)	+61°59′27″.9
Dec (top/left)	+62°23′40″.9
Dec (top/right)	+62°22′49″.4
Dec (bottom/right)	+61°34′41″.2
Dec (bottom/left)	+61°35′30″.5

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Contribution Index (beta):

Sh2 192, 193, 194 and 196 Hydrogen Alpha and RGB

Sh2 192, 193, 194 and 196 Hydrogen Alpha and RGB

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Image Index:

Contribution Index (beta):

Sh2 192, 193, 194 and 196 Hydrogen Alpha and RGB

Sh2 192, 193, 194 and 196 Hydrogen Alpha and RGB

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

In these collections

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