NGC7000 - North America Nebula in Cygnus (Daniel.P)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B355

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NGC7000 - North America Nebula in Cygnus

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NGC7000 - North America Nebula in Cygnus

Taking the opportunity of another cloudy day, I process some data from last summer.

The cooling of the sensor varied at -9C, -15C & -18C, depending on the outside temperature.

The RGB exposures were used to :

- simply add color to stars in version A (SHO)

- adjust color of SHO image (L from SHO, and 2/3 of SHO color + 1/3 of RGB color) in final version B

- add some RGB data to SHO data in version C (RGBSHO)

- pure RGB image in version D

In version C, stars are more numerous due to RGB data.

The processing was performed in PI as follows :

For each S, H, O, R, G, B channels :

- Images Calibration (Dark and Flat (for RGB))

- Cosmetic Correction

- Image Registration

- Image Integration

- Mure Denoise (for RGBSHO)

Then :

- Create SHO image

- Deconvolution of SHO masked with 2.1 pixel psf

- Color balance on nebula and color saturation using mask to protect dark area.

- SCNR (G neutral and min)

- Create RGB image and color balance and color sat (to be used as detailed above)

- Going NL using HT for SHO & RGB images

- Color Saturation masked (and desaturate bkg)

- Color Saturation masked using stars to desaturate stars

- Apply "a" & "b" color channels of the RGB image under star mask

(this is to apply natural color to the stars)

- Local Histogram Equalisation

- TGV denoise (no mask)

Final image adjustments performed in Iphoto on Imac :

- levels adjustments

- adjust color looking using "selective color"

- boost sharpness

- deflip

- crop

Original
Final
B
C
D

B

Description: RGB color added

Uploaded: ...

C

Description: RGB lum and color added

Uploaded: ...

D

Description: RGB only

Uploaded: ...

ZWO ASI1600MM/QHY163M

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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.

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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.
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Status	Advanced success
Started	...
Astrometry.net job	3021713
PixInsight job	Y7ZCFI0W1KSNP8POHT71JCO6UITGRN36
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h58m50s.759
RA (top/left)	21h01m22s.806
RA (top/right)	20h56m27s.691
RA (bottom/right)	20h56m21s.431
RA (bottom/left)	21h01m10s.884

Dec (center)	+43°43′52″.86
Dec (top/left)	+44°18′12″.82
Dec (top/right)	+44°19′28″.98
Dec (bottom/right)	+43°09′18″.57
Dec (bottom/left)	+43°08′06″.12

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NGC7000 - North America Nebula in Cygnus

NGC7000 - North America Nebula in Cygnus

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Image Index:

Contribution Index (beta):

NGC7000 - North America Nebula in Cygnus

NGC7000 - North America Nebula in Cygnus

Equipment

Acquisition details

Description

Comments

Revisions

B

C

D

Sky plot

Histogram

In these public groups

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