California Nebula panel test (Paul Macklin)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: IC 2005 · LDN 1449 · LDN 1456 · PGC 13981 · PGC 14008 · PGC 14045 · PGC 14068 · PGC 165380 · PGC 213252 · PGC 213255 · PGC 213256

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California Nebula panel test

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California Nebula panel test

This is a test of a slightly new approach, in advance of a 9-panel mosaic on the California Nebula.

Capture 140 x 3 min in dual narrowband

Shorter than my typical 6-10 min subs
More total subs than typical
comparable 6-8 hour session.

Calibrate, analyze, register, normalize 140 frames using standard Airy Disc
Integrate the best 120 subs (sorted by quality)
Remove light pollution
Balance star color

Selection box over whole image
Balance RGB, not the full black body model

Switch Bayer to "Ha-OIII extract Ha"
Re-normalize
Integrate same 120 subs for Ha
Remove light pollution
Repeat for [OIII]

Late in post-processing, I'm (nearly) using John Favalessa's Topaz settings:

Severe noise mode
Noise reduction: 3/100
Enhance sharpness: 0/100
Recover original detail: 10/100
Color noise reduction: 5/100

Original
B
C
D
Final
E

B

Description: Extracted Ha

Uploaded: ...

C

Description: Extracted [OIII]

Uploaded: ...

D

Description: HOO2

Uploaded: ...

E

Description: Warhol style!

RGB , [OIII]
Ha , HOO2

Uploaded: ...

Nebulas - Widefield and Mosaics

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	5115134
PixInsight job	O8GITZR8PHSWPU4O12LYU9G3BDU0N4T4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	03h55m51s.56
RA (top/left)	04h00m03s.87
RA (top/right)	04h00m24s.33
RA (bottom/right)	03h51m33s.17
RA (bottom/left)	03h51m24s.36

Dec (center)	+36°56′17″.3
Dec (top/left)	+36°02′07″.5
Dec (top/right)	+37°47′00″.1
Dec (bottom/right)	+37°49′54″.6
Dec (bottom/left)	+36°04′55″.9

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California Nebula panel test

California Nebula panel test

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E

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Image Index:

Contribution Index (beta):

California Nebula panel test

California Nebula panel test

Equipment

Acquisition details

Description

Comments

Revisions

B

C

D

E

Sky plot

Histogram

In these collections

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