NGC7023 LBN487 Iris Nebula in LRGB Takahashi FSQ-106EDX4 (Stefano Zamblera)

NGC7023 LBN487 Iris Nebula in LRGB Takahashi FSQ-106EDX4

Revision title: NGC7023 LBN487 Iris Nebula: Luminance layer within RGB integration in Photoshop

Link: https://www.xiulong.it/tianwensheying/2023/11/20/ngc7023-lbn487-iris-nebula-in-lrgb-takahashi-fsq-106edx4/

Link to TIFF/FITS: https://e.pcloud.link/publink/show?code=XZcCSDZcAMf0V3J4Kj32LQNetqoouDdAHmX

LBN487 and NGC7023 in LRGB, Takahashi FSQ-106EDX4 and Proline CCD FLI PL16083, subframes of 300sec at -25C from IC Astronomical Observatory of Spain, Telescopelive network.
I developed 3 different postproduction: an LRGB one directly developed after LRGB master integration in PixInSight.

I thus proceed to an RGB version and a final LRGB version where L channel, devided in stars and starless masters, I integrated into RGB star and starless layers group in Photoshop with different values, with stars contributing at 10% and starless Luminance at 100%.

RGB integration

Luminance starless master

Photoshop RGB and separated Luminance master available here: https://e.pcloud.link/publink/show?code=XZ9CSDZm9yOwDzwaiH2lkIx0n2x90KYsRzV

Original
B
C
Final
D

B

Title: NGC7023 LBN487 Iris Nebula. Development after LRGB integration in PixInSight

Description: NGC7023 LBN487 Iris Nebula. Development after LRGB integration in PixInSight

Uploaded: ...

C

Title: NGC7023 LBN487 Iris Nebula: Luminance starless master

Description: NGC7023 LBN487 Iris Nebula: Luminance starless master

Uploaded: ...

D

Title: NGC7023 LBN487 Iris Nebula: Luminance layer within RGB integration in Photoshop

Description: NGC7023 LBN487 Iris Nebula: Luminance layer within RGB integration in Photoshop.
Luminance starless channel contributes by 100% in Luminosity blending layer over Starless RGB layer; some curves adjustement applied to increase contrast and boost luminosity.
Luminance stars channel contributes by 10% in Luminosity blending layer over stars RGB layer.

Uploaded: ...

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	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

	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

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	8791193
PixInsight job	HIFTA65WEU69R4MO04URTDGVI3C7MIS1
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h00m00s.12
RA (top/left)	20h40m19s.25
RA (top/right)	21h26m23s.92
RA (bottom/right)	21h25m04s.51
RA (bottom/left)	20h28m12s.26

Dec (center)	+67°52′47″.4
Dec (top/left)	+64°59′31″.9
Dec (top/right)	+65°32′59″.9
Dec (bottom/right)	+70°35′01″.5
Dec (bottom/left)	+69°53′23″.9

Image Index:

Contribution Index (beta):