Hemisphere:  Northern  ·  Constellation: Orion (Ori)
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The lower(sh2-261), 



    
        

            Wei Li
The lower(sh2-261)
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The lower(sh2-261)

Getting plate-solving status, please wait...
The lower(sh2-261), 



    
        

            Wei Li
The lower(sh2-261)
Powered byPixInsight

The lower(sh2-261)

Technical card

Imaging telescopes or lenses: TEC 140 APO ED

Imaging cameras: Moravian Instruments G3 16200

Mounts: Astro-Physics Mach1AP GTO

Guiding telescopes or lenses: TEC 140 APO ED

Guiding cameras: ZWO ASI 120 mini

Software: PixInsight PI 1.8  ·  AstroPixel Processor  ·  SGPro v3

Filters: Chroma 2" LRGB  ·  Chroma 2" O3 3nm  ·  Chroma 2" Sii 3nm  ·  Chroma 2" Ha 5nm

Accessory: Feathertouch Starlight Instruments EFS  ·  AP GTX Field Flattener


Dates:Jan. 16, 2021

Frames: 68x1800" (34h)

Integration: 34h

Avg. Moon age: 3.36 days

Avg. Moon phase: 12.24%


Basic astrometry details

Astrometry.net job: 4184462

RA center: 6h 9' 6"

DEC center: +15° 45' 18"

Pixel scale: 3.300 arcsec/pixel

Orientation: 150.372 degrees

Field radius: 0.937 degrees


Resolution: 1600x1272

Locations: backyard, Grapevine, TX, United States

Data source: Backyard

Description

The lower nebula locates on upper area of Orion. It is around 3300 light years away. At beginning of year 2021, Texas weather has been very cooperated, I was able to complete subs collections in just 6 consecutive nights. During post processing, I tried to break my habit and come down to some color not presented in AstroBin. I have set this picture aside for a week, tweaking to different flavor from time to time. This is the result I settled to. Hope you like it.

Nights:
1/11/2021, 1/12/2021, 1/13/2021 1/14/2021, 1/15/2021, 1/16/2021

Subs:
ha: 22x1800s
o3: 20x1800s
s2: 22x1800s
r/g/b: 20x120s each

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