NGC 6826 – The Blinking Planetary

NGC 6826 is a planetary nebula in the constellation of Cygnus. It is also 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.

It was Captured on my robotic dual rig in Spain.
Scopes: APM TMB LZOS 152 Refractors
Cameras: QSI6120wsg8
Mount: 10Micron GM2000 HPS
Ha 15×1800″
OIII 178×20, 20×1800, 120×30, 12×600
Blue 9×300″
Green 16×300″
Lum 20×300″
Red 20×300″
Total Integration: 37.3 hours

Autore: Peter Goodhew (sito)