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Getting plate-solving status, please wait...

Motch-Werner-Pakull 1 / MWP1 (PN G080.8-10.6, PK 080-10.1, PNG 80.8-10.6)

Technical card

Resolution: 4500x3500

Dates:Aug. 8, 2018Aug. 24, 2018Aug. 25, 2018Aug. 26, 2018Aug. 29, 2018Sept. 4, 2018Sept. 5, 2018Sept. 6, 2018Sept. 16, 2018Sept. 17, 2018Sept. 19, 2018Sept. 29, 2018

Blue: 80x60" (gain: 139.00)
Green: 85x60" (gain: 139.00)
ZWO H-alpha 7nm: 53x300" (gain: 139.00)
ZWO H-alpha 7nm: 79x400" (gain: 139.00)
OIII: 36x300" (gain: 139.00)
OIII: 94x400" (gain: 139.00)
Red: 80x60" (gain: 139.00)

Integration: 30.7 hours

Avg. Moon age: 16.92 days

Avg. Moon phase: 60.54%

Bortle Dark-Sky Scale: 8.00 job: 2322247

RA center: 21h 17' 10"

DEC center: +34° 12' 14"

Pixel scale: 0.685 arcsec/pixel

Orientation: 359.267 degrees

Field radius: 0.542

Locations: Home Roof (Bortle 7-8 / Est. Sky Quality: 18.53), Springfield, PA, United States

Data source: Backyard


MWP1 is an old, rather faint planetary nebulae in Cygnus that doesn't seem to be imaged often despite its size, unique and interesting structure and good placement in the sky for those of us in the Northern Hemisphere. Maybe because it's annoyingly difficult to process due to the background hydrogen and oxygen? I really had trouble bringing the latter out without leaving the image "blotchy". I also had a harder than usual time integrating the RGB stars. I think it came out pretty well though overall.

We're in the middle of what's currently the seventh rainiest year on record in Philadelphia - here's hoping this ends soon. I'd really like to publish more than one image a month...



Chris Sullivan



Fixed the red cast / balanced the histogram, smoothed the background, levels adjustment.


Reduced star sizes.

Sky plot

Sky plot


Motch-Werner-Pakull 1 / MWP1 (PN G080.8-10.6, PK 080-10.1, PNG 80.8-10.6), 


            Chris Sullivan