Saturday, August 20, 2016

also Ha and O-III (Halifax)

For this second run of the Pac-Man Nebula aka NGC 281, I also requested other filters.

Pac-Man Nebula in hydrogen alpha

Hydrogen alpha.

Pac-Man Nebula with O-III filter

Ionised oxygen.

Both, 60 seconds subexposures, 10 stacked shots. FITS Liberator, Paint.Net. North is up; left is east.


I also gathered LRGB data.


Finally, on the evening of 4 Nov '18, captured the nebula without gradients and tumblers.

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