The Pacman Nebula

This is a bicolour narrowband image of NGC281, the Pacman nebula, captured with 9 x 10min H-alpha frames and 12 x 10min OIII. The “white” parts in the middle of the nebula are where there is some OIII response in addition to H-alpha, and the yellow parts are where there is just H-alpha.

Some two weeks later, the moonless skies allowed be to take 10 x 5 min R, G and B frames to add into the narrowband filters:

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