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Sh2 203 H-alpha RGB, 





    
        

            jerryyyyy
Sh2 203 H-alpha RGB

Sh2 203 H-alpha RGB

Technical card

Resolution: 3135x2423

Dates:Nov. 26, 2019

Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 15x240" bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 15x240" ISO-2 bin 1x1
Astrodon H-alpha 5nm: 14x1800" bin 1x1
Astrodon Red Tru-Balance E-Series Generation 2: 15x240" bin 1x1

Integration: 10.0 hours

Avg. Moon age: 29.38 days

Avg. Moon phase: 0.02%

Astrometry.net job: 3078545

RA center: 3h 22' 4"

DEC center: +54° 52' 37"

Pixel scale: 1.220 arcsec/pixel

Orientation: 359.958 degrees

Field radius: 0.672

Locations: Stanford Faculty Observatory, Stanford, California, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

This extended diffuse HII region may be ionised by the B class star LS I +55 47.

From: http://galaxymap.org/cat/list/sharpless/201

In case anyone is interested in the workflow for the destarred images, the stars and the denoising:

Create Stretched HA and RGB
Destar HA in PI
Denoise RGB and Destarred HA in PS
Clip Denoised RGB in PS to small stars
Extract L from Denoised RGB for Stars in PI
Clip (AutoZero) Denoised Destarred HA in PI
Histogram stretch to 50% across
HDRM (6) Stretch Denoised Destarred HA in PI
LHE Stretch Denoised Destarred HA in PI (Possible)
S-curve Stretch Denoised Destarred HA in PI
Denoise again now Denoised Destarred2 HA in PS... stretching brings back noise
Add Stars Back to Denoised Destarred2 HA in PI
Combine Denoised RGB and Destarred2 HA in PS
RGB_HA and RGB_denoised back to PI
Final Image Pixel math
RGB_HA-Stars+RGB_denoised(RGB Stars)
Final Histogram Clip and S-curve stretch and saturation in PI

Comments

Author

jerryyyyy
jerryyyyy
License: None (All rights reserved)
760
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Revisions

  • Sh2 203 H-alpha RGB, 





    
        

            jerryyyyy
    Original
  • Final
    Sh2 203 H-alpha RGB, 





    
        

            jerryyyyy
    B

B

Stars more saturated

Sky plot

Sky plot

Histogram

Sh2 203 H-alpha RGB, 





    
        

            jerryyyyy