Tuesday, May 08, 2018

gathered more for 6445

Cool. The BGO returned to planetary nebula NGC 6445. This time I was able to obtain O-III and Hα data. So to improve on my results from 10 Apr.

For all images: FITS Liberator and Paint.NET. North is up; east is left.

NGC 6445 in luminance

Luminance, 30 seconds, 5 exposures.

NGC 6445 in hydrogen-alpha

Hydrogen, 60 seconds, 10 exposures.

NGC 6445 in ionised oxygen

Oxygen, 60 seconds, 10 exposures.

I like the frills in the later two images. Plus the nebula is remarkably bright.

Field size is different in the H-alpha and O3 filters. I suspect two different cameras were used...


Yep. The instrument used for the special filtering was the new SBIG STXL-11002 CCD...

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