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Hemisphere:  Northern
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Sh2-112 • Emission Nebula in SHO, 


            Douglas J Struble
Sh2-112 • Emission Nebula in SHO
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Sh2-112 • Emission Nebula in SHO

Technical card

Imaging telescopes or lenses: Explore Scientific ED165CF FPL-53

Imaging cameras: ZWO ASI1600MM-PRO

Mounts: Astro-Physics Mach 1 GTO

Guiding telescopes or lenses: Orion 80mm Short Tube

Guiding cameras: Starlight Xpress Lodestar x2

Software: Adobe Photoshop CS5.5  ·  PHD2  ·  Sequence Generator Pro  ·  PixInsight  ·  SkySafari Pro

Filters: Astronomik SII 1.25" 6nm  ·  Astronomik Ha 6nm 1.25''  ·  Astrodon OIII 3nm

Accessory: QHYCCD PoleMaster  ·  Hotech 2" SCA Self-Centering Field Flattener  ·  ZWO 8x 1.25" Filter Wheel (EFW)  ·  MoonLite CFL 2.5" Large Format Focuser

Dates:July 3, 2020July 17, 2020July 18, 2020

Astrodon OIII 3nm: 271x120" (gain: 200.00) -20C bin 1x1
Astronomik Ha 6nm 1.25'': 299x120" (gain: 200.00) -20C bin 1x1
Astronomik SII 1.25" 6nm: 286x120" (gain: 200.00) -20C bin 1x1

Integration: 28.5 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 22.17 days

Avg. Moon phase: 37.87%

Bortle Dark-Sky Scale: 8.00

Basic astrometry details job: 3695910

RA center: 20h 34' 15"

DEC center: +45° 38' 38"

Pixel scale: 0.679 arcsec/pixel

Orientation: 283.275 degrees

Field radius: 0.515 degrees

Resolution: 4392x3236

Locations: Backyard White Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard


Since 2018, shortly after I started astrophotography, this area has intrigued me including Sh2-115 and Sh2-116. My first image published in Sky & Telescope Magazine was of this region.

Sh2-112 lies about 5.600 light years from Earth in Cygnus, the Swan It’s not far from the North America Nebula, but twice as far away. This whole area of Cygnus is dominated by the Milky Way and is awash in faint nebulosity, as can be seen in this image. The nebula is illuminated by BD+45 3216, the bright star at its center, which is about 30x the size of the Sun. This nebula does not seem to be a particularly popular imaging target, though I am not sure why. It is quite beautiful.



Douglas J Struble
License: None (All rights reserved)


  • Final
    Sh2-112 • Emission Nebula in SHO, 


            Douglas J Struble
  • Sh2-112 • Emission Nebula in SHO, 


            Douglas J Struble


Description: Sky & Telescope Magazine October 2018

Sky plot

Sky plot


Sh2-112 • Emission Nebula in SHO, 


            Douglas J Struble

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