Two Years in the Cave (Ron Crouch)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep)

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Two Years in the Cave

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Two Years in the Cave

Last October I got a bunch of data on SH2-155 aka The Cave.. This month I decided to add some more and replaced the previous 300 sec Ha subs with 53x600s and also added a bit more through RGB&L as well. At this stage there is a total of 25.83hours with 16 of those RGBL. I followed the processing steps from something I copied from another user here for "RGBHL" workflow and it was so easy!

Linear fit RGB to Ha. Apply ABE to all frames except Ha. Made linear RGB and applied PCC against spiral galaxy which resulted in a very natural color. MLT noise reduction to RGB. Blended Ha into the Linear RGB using PI's script.. The default factor of 1.2 was good.

Made a superluminance by averaging all ABE linear frames using te CLS luminance as reference. Applied deconvolution to that.

Applied simple screen stretch to the RGBH and the superluminance and made the RGBH_L.

Adjusted contrast with curves and applied ACDNR.

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	2910309
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Two Years in the Cave

Two Years in the Cave

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Image Index:

Contribution Index (beta):

Two Years in the Cave

Two Years in the Cave

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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