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NGC 6826 - The Blinking Planetary

Image

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About this observation
Observer
Peter Goodhew FRAS
Time of observation
25/07/2020 - 13:18
Object
NGC 6826
Observing location
Fregenal de la Sierra, Spain
Equipment
APM TMB 152 LZOS Refractors
10Micron GM2000 HPS mount
QSI6120wsg8 cameras
Exposure
Ha 15x1800" OIII 178x20, 20x1800, 120x30, 12x600 Blue 9x300" Green 16x300" Lum 20x300" Red 20x300" Total Integration: 37.3 hours

NGC 6826 is known as The Blinking Planetary. This stems from the faintness of the outer shell which is only visible when using averted vision. It is also known as Caldwell 15. With this image I wanted to tease out the structure of the shell, by combining both Ha and OIII data. The OIII signal is the stronger of the two, hence the resulting teal colour.

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