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Sh2-155 Cave Nebula - HaRGB, 


            Phil Brewer
Sh2-155 Cave Nebula - HaRGB

Sh2-155 Cave Nebula - HaRGB

Technical card

Resolution: 3255x2403

Dates:Aug. 23, 2017Aug. 24, 2017Aug. 25, 2017Aug. 26, 2017

Astrodon 3nm Ha: 49x600" -15C bin 1x1
Astrodon E-Series Blue filter: 54x300" -15C bin 1x1
Astrodon E-Series Green filter: 57x300" -15C bin 1x1
Astrodon E-Series Red filter: 54x300" -15C bin 1x1

Integration: 21.9 hours

Avg. Moon age: 3.33 days

Avg. Moon phase: 13.05%

Bortle Dark-Sky Scale: 6.00 job: 1705183

RA center: 22h 55' 59"

DEC center: +62° 25' 44"

Pixel scale: 1.391 arcsec/pixel

Orientation: 359.240 degrees

Field radius: 0.781

Locations: Independence Park, Canton, Michigan, United States

Data source: Backyard


Not real happy with how this turned out. I was hoping to get a nice clean luminance from the Ha, and fill in with RGB color data. Instead, I struggled with star size mismatch, low saturation on the LRGB (pink nebula), and lack of luminance detail in some of the reflection nebula areas.



Phil Brewer
License: Attribution-NonCommercial Creative Commons

Sky plot

Sky plot


Sh2-155 Cave Nebula - HaRGB, 


            Phil Brewer

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