Before and After SV Decon (Jonathan Young)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: Checkmark Nebula · IC 4706 · IC 4707 · Lobster Nebula · M 17 · NGC 6618 · Sh2-45 · Swan Nebula · VdB121 · omega Nebula

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Before and After SV Decon

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Before and After SV Decon

Revision A = Before. Bin35, Autodev (no dark anomaly filter).

Revision B = After SV decon tuning

Revision C = SV decon

Revision D = bin 50 dev 94%, hdr, sharp, sv decon tuned, denoise 1.8 pixels

B

Description: After:
9x9
Spatial error 0.7
Linearity 80%
Deringing 60%
Fuzz = 36 pixels

Uploaded: ...

C

Description: Default SV Decon - Apod autogenerate
Note the spurious hot pixel story next to stars and remaining ringing.

Uploaded: ...

D

Description: Alternate routine
50% bin
94% dev
no wipe no contrast
HDR 2000 str 1.1
Sharp automask. light/dark. 25%. 250%
SV Dcon. default mask, sample 7x7 pixels, 0.75. dering 75% fuzz 28
denoise 1.8"

Still a few extra bright pixels but ringing is gone.

Uploaded: ...

E

Description: Revision E - full process at full resolution.
Autodev - 33% on linearity, 3.3 pixel dark anomaly, 0.9 sensor detection.
HDR - 2000 pixel strength 1.1
Sharp - default mask, 500% stength, 33% dark/light bias
SVDecon -
90% derining, 40 pixels.
Spatial error - 0.67
Dyn Range Extension 1.05
Linearity Cutoff 80%
Sample 15x15
Iterations 20
--------------------
Life 90% DimSmall
--------------
Denoise 3.5" --> background noise ok, still some ringing and grey holes in stars

Uploaded: ...

F

Description: --------------

Revision F - fix stars (grey holes and rings via SYNTH)
SYNTH - refractor sample size 4000
same mask as sharpen - nebula highlights
Corewhiteness 100%
Blur 2 pixels
blend 0%
brightness 20%
core noiseiness 10%
Image Dia 220 arc-min
Getting close ~12 or so noticeable artifacts remain which will need to be fixed with heal.

Uploaded: ...

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	4682368
PixInsight job	6F09N8SC150WG0FN4QOBVS0AJTCFPZQA
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	18h20m43s.45
RA (top/left)	18h18m01s.38
RA (top/right)	18h18m24s.13
RA (bottom/right)	18h23m26s.92
RA (bottom/left)	18h23m01s.32

Dec (center)	-16°08′21″.9
Dec (top/left)	-15°15′06″.9
Dec (top/right)	-17°05′20″.0
Dec (bottom/right)	-17°01′30″.6
Dec (bottom/left)	-15°11′21″.4

Image Index:

Contribution Index (beta):

Before and After SV Decon

Before and After SV Decon

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E

F

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Image Index:

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Before and After SV Decon

Before and After SV Decon

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Acquisition details

Description

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Revisions

B

C

D

E

F

Sky plot

Histogram

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