The Butterfly Nebula, IC 1318 NASA, Astronomy Picture Of The Day, part I http://apod.nasa.gov/apod/ap081107.html Butterfly Nebula image was selected as an "Editors' Choice" by Sky&Telescope magazine. In this image colors are showing difference between Double ionized Sulfur (Red), Hydrogen alpha (Green) and triple ionized Oxygen (Blue). This palette is generally known as a Hubble palette by the palette used to processing images from Space telescope Hubble. Imaging data: - Camera, QHY8 - Filters, Baader 7nm H-alpha and Baader 8,5nm O-III - Optics, Tokina AT-X 300mm @ f2.8 - Exposures, 5 X 1200s H-alpha 3 X 1200s O-III 4 X 1200s S-II + flats and bias - Guiding, LX200 GPS 12" + PHD-guiding and Lodestar