A Supernova Remnant, the "Veil Nebula"
NGC 6992, 6995 & 6960, IC 1340
A 3D-movie:
http://www.youtube.com/watch?v=ZpOM4z5ScKU
Image is in a HST-colors, combined from the Narrowband channels. (HST = Hubble Space Telescope)
More info:
http://en.wikipedia.org/wiki/Veil_Nebula
Imaging data:
Camera, QHY8
Filters, Baader 7nm H-alpha and Baader 8,5nm O-III
Optics, Tokina AT-X 300mm @ f2.8 -
Exposures, 7X 1200s H-alpha 8 X 1200 O-III 3X1200s SII+ flats and bias
Guiding, LX200 GPS 12" + PHD-guiding and Lodestar