NGC7293 - The Helix Nebula Narrow band SIIHaOIII image of NGC 7293 nebula in Aquarius in mapped colours

Acquisition by M. Angelini and F. Tagliani
Image Processing by F. Antonucci

SII:Ha:OIII 60:90:60

Telescope: Dall-Kirkham Astrograph 12" F/7.8
Mount: Fork mount Gemini MOFOD + Pulsar2
CCD: SBIG STL1001E
Filters: Custom Scientific 4,5nm

Parco Astronomico del Brallo - September, 30 - 2011