Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  B33  ·  Horsehead nebula  ·  IC 434  ·  IC434  ·  NGC 2023  ·  NGC2023  ·  Sh2-277
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HORSEHEAD NEBULA IC434 IN RGB w/10% HA LUM, 



    
        

            Hobby Astronomer
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HORSEHEAD NEBULA IC434 IN RGB w/10% HA LUM

Mounts: 10 MICRON OAG GUIDED GM 1000 HPS

Guiding telescopes or lenses: Celestron 8" EdgeHD

Guiding cameras: SBIG STT-1603ME

Software: Pixinsight

Filters: Baader Ha 36mm 7nm  ·  Baader Blue 36mm  ·  Baader Green 36mm  ·  Baader Red 36mm

Accessory: Celestron Focal Reducer .7x  ·  Moonlite LiteCrawler for 8" Edge HD


Dates:Dec. 25, 2019

Frames:
Baader Blue 36mm: 29x120" bin 1x1
Baader Green 36mm: 45x120" bin 1x1
Baader Ha 36mm 7nm: 5x300" bin 1x1
Baader Red 36mm: 45x120" bin 1x1

Integration: 4.4 hours

Avg. Moon age: 28.81 days

Avg. Moon phase: 0.59%

Bortle Dark-Sky Scale: 5.00

Mean SQM: 19.50

Temperature: 13.00


Astrometry.net job: 3141987

RA center: 5h 41' 10"

DEC center: -2° 23' 0"

Pixel scale: 1.238 arcsec/pixel

Orientation: -97.015 degrees

Field radius: 0.300 degrees


Resolution: 976x1446

Data source: Backyard

Description

This is an RGB image project with a 10% HA blended in with the PIXINSIGHT LRGB Combination Module.

After getting my lunch eaten on the Pacman Nebula, I went back and revisited my data collection methods. I live under 19 to 19.5 skies and my color has never been good.

This target was nice and bright. Shot Lum, HA, Red, Green, and Blue. Combined as RGB, HaRGB, LRGB. Finally tried 10% HA Lum in the Pixinsight LRGB combination and that looked just right.

HA = 7 * 5 MIN, used as 10% LUM
RED = 45 * 2MIN
GREEN = 45 * 2MIN
BLUE = 45 * 3MIN, Only 29 passed the RANSAC combination in PI.

My dithering settings need to be set highter to get past some column defects.

Image was shot with a NAB SBIG 1603ME, hence the blooms.

Feel this was good progress and was able to apply the lessons learned on my NGC281 Narrowband Project.

NGC 2023 showed more than just blue with the RGB technique.

Will probably shoot my HA and try another version of this image now that I have some nice color to work with.

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HORSEHEAD NEBULA IC434 IN RGB w/10% HA LUM, 



    
        

            Hobby Astronomer