Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Hemisphere:  Northern  ·  Contains:  68 A Cyg, NGC7044, PK087-03.1, Sh2-119, The star 68Cyg
Getting plate-solving status, please wait...
Sh2-119 Narrowband Natural, 


            Gary Lopez
Powered byPixInsight

Sh2-119 Narrowband Natural

Imaging telescopes or lenses: William Optics GT71 71mm f/5.9 Apo Refractor

Imaging cameras: ZWO ASI1600MM Cooled PRO

Mounts: Orion Atlas EQ-G

Guiding telescopes or lenses: Orion 50mm Guide Scope with helical focusing

Guiding cameras: Lacerta M-Gen II Autoguider

Focal reducers: William Optics 0.8X Field Flattener

Software: Adobe Lightroom CC  ·  Photoshop CC  ·  Main Sequence Software Sequence Generator Pro, v3.0  ·  Pleaides PixInsight Core 1.8

Filters: Astrodon OIII 3nm-31mm  ·  Astrodon SII 3nm-31mm  ·  Astrodon Ha 3nm-31mm

Dates:Aug. 12, 2019Aug. 13, 2019Aug. 14, 2019Aug. 15, 2019

Astrodon Ha 3nm-31mm: 280x180" (gain: 139.00) -15C bin 1x1
Astrodon OIII 3nm-31mm: 79x180" (gain: 139.00) -15C bin 1x1
Astrodon SII 3nm-31mm: 120x180" (gain: 139.00) -15C bin 1x1

Integration: 23.9 hours

Darks: ~35

Bias: ~45

Avg. Moon age: 13.39 days

Avg. Moon phase: 96.75%

Bortle Dark-Sky Scale: 4.00 job: 2873992

RA center: 21h 18' 22"

DEC center: +43° 45' 42"

Pixel scale: 2.303 arcsec/pixel

Orientation: -88.835 degrees

Field radius: 1.764 degrees

Resolution: 4398x3325

Locations: Monterey Pines Observatory, Monterey, California, United States

Data source: Backyard


This is a wide-angle view of Sharpless 119 (Sh2-119), a large emission nebula covering about three degrees of the sky in the constellation Cygnus. My previous posting of Sh2-119 focused on the Bok globules and dark dust lanes of the object using a traditional HST palette ( In this rendition, I am showing the entire nebula using much of the same narrowband data, but here with a combination of the three channels that yields a more “natural” color representation. Since the OIII data for this project were very poor, the perimeter of most frames blown out by light from the full Moon, I mixed the much stronger SII data with the OIII to retain structure in both the green and blue channels. After a fair amount of trial and error in PI Pixel Math, I was able to salvage a reasonable image if Sh2-119.

Van McComas astutely observed that the structure of this nebula, with the very light OIII signal in the core, gives the appearance of looking through a window at the cosmos beyond. So, since this object does not have a common name, how about we call it Window Nebula?



Gary Lopez
License: None (All rights reserved)

Sky plot

Sky plot


Sh2-119 Narrowband Natural, 


            Gary Lopez