Monday, May 14, 2018

retrieved H-alpha and O-III (Halifax)

I first imaged the Little Ghost planetary nebula with BGO on 10 Apr '18 but at the time I forgot to get narrowband filter data. Reshot with the SBIG camera so to use the hydrogen and oxygen filters.

planetary nebula NGC 6369 in luminance

Luminance. 30 seconds subexposures, 5 stacked shots.

planetary nebula NGC 6369 in hydrogen alpha

Hα. 60 seconds subexposures, 10 stacked shots.

planetary nebula NGC 6369 in ionised oxygen

O-III. 60 seconds subexposures, 10 stacked shots.

All processed with FITS Liberator and GIMP. North is up; east is left.

That thing is bright! And you can clearly see the outer wisps...

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