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Contains:  M 27, Dumbbell nebula, NGC 6853
Getting plate-solving status, please wait...
M27 (Dumbbell Nebula), 


            Joel Shepherd
M27 (Dumbbell Nebula)

M27 (Dumbbell Nebula)

Technical card

Imaging telescope or lens:EdgeHD 8

Imaging camera:Atik 460EX Mono

Mount:Astro-Physics Mach1GTO

Guiding telescope or lens:EdgeHD 8

Guiding camera:Lodestar X2

Focal reducer:Celestron EdgeHD 0.7x

Software:PixInsight 1.8Craig Stark Nebulosity 3

Filters:Astrodon 5nm SIIAstrodon 5nm H-alphaAstrodon 5nm Olll


Resolution: 1280x1096

Dates:July 6, 2017July 12, 2017July 13, 2017July 14, 2017

Astrodon 5nm H-alpha: 15x600" bin 1x1
Astrodon 5nm Olll: 15x600" bin 1x1
Astrodon 5nm SII: 15x600" bin 1x1

Integration: 7.5 hours

Avg. Moon age: 17.21 days

Avg. Moon phase: 84.88%

Bortle Dark-Sky Scale: 6.00 job: 1682928

RA center: 299.907 degrees

DEC center: 22.723 degrees

Pixel scale: 0.731 arcsec/pixel

Orientation: -14.182 degrees

Field radius: 0.171 degrees

Locations: Home, Seattle, WA, United States

Data source: Backyard


Subject: M27: A planetary nebula in the constellation Vulpecula, located about 1360 light-years from earth.

Capture notes: A straightforward narrowband capture. S-ii was captured over two different nights due to some clouds coming in the first night, but otherwise all lights were taken during a long run of extremely clear summer nights in Seattle (making up for last winter I suppose).

Processing notes: I used tone maps to stretch the individual narrowband channels, combined them into an RGB image and then applied a synthetic luminance made by integrating the original narrowband channels. My main concern with this image is whether I went overboard with deconvolution ... most of the detail can be attributed to applying local histogram equalization to the luminance.



Joel Shepherd
License: Attribution Creative Commons

Sky plot

Sky plot


M27 (Dumbbell Nebula), 


            Joel Shepherd