NGC 7789 - Caroline's Rose (Jonathan W MacCollum)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: NGC 7789

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NGC 7789 - Caroline's Rose

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NGC 7789 - Caroline's Rose

Spent some time bouncing around a few summer-time open clusters on the only clear night available to me last week.

Enjoy, and feel free to share your thoughts and criticism. I never want to stop learning and improving!

Acquisition and Pre-Processing:

* Best 107 (of 150 total) x30s Lights weighted using the following subframe expression:

(10*(1-(FWHM-FWHMMin)/(FWHMMax-FWHMMin))

+ 15*(1-(Eccentricity-EccentricityMin)/(EccentricityMax-EccentricityMin))

+ 25*(SNRWeight-SNRWeightMin)/(SNRWeightMax-SNRWeightMin))

+ 50

* Stacked with Linear Fit Clipping and CFA Drizzle 1x with 0.7 drop shrink

Color Calibration:

* DBE -> Background Neutralization -> Color Calibration -> Photometric Color Calibration

* Assign RGB Working space to 1,1,1

RGB Processing:

* TGV with a low contrast mask and strong edge protection

* MMT noise reduction with a high protective luminance mask

* HSV Repaired Separation Script

* Arcsinh Stretch to non-linear

Luminance Processing:

* Extract Synthetic Luminance

* Masked Stretch and Curves

Final Touches:

* LRGB Combination of L with RGB

* ACDNR Noise Reduction targeting the smaller scale noise

* Chrominance noise reduction on the brighter stars to eliminate grid-like structures

Cooled Color Cams
ASI 071 mcc

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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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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
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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	2804065
PixInsight job	ECHMWVB0UTMNE80SVG2CJ8419WMH069K
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	23h57m14s.417
RA (top/left)	00h01m58s.953
RA (top/right)	23h52m08s.260
RA (bottom/right)	23h52m37s.530
RA (bottom/left)	00h02m14s.236

Dec (center)	+56°44′08″.46
Dec (top/left)	+57°12′47″.17
Dec (top/right)	+57°08′07″.11
Dec (bottom/right)	+56°14′49″.17
Dec (bottom/left)	+56°19′21″.41

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NGC 7789 - Caroline's Rose

NGC 7789 - Caroline's Rose

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NGC 7789 - Caroline's Rose

NGC 7789 - Caroline's Rose

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