The Helix Nebula NGC 7293 in the light of Ionised Hydrogen, Sulphur and Oxygen
This image reveals a long history of stellar eruptions from a once Sun like star in Aquarius
and covers several full moons worth of sky area!
Overall Winner - South Pacific Star Party "Astro's" 2010
Short listed in Royal Observatory Greenwich Astronomy Photgrapher of the Year 2010
** Using new low reflection Astronomik 12nm Ha SII OIII filter set
AP152 F7.5 Starfire APO refractor with 4" field flattener
FLI ProLine11002 CCD & CFW-2-7
L SII Ha OIII: 1hr, 7hrs, 10hrs, 9hrs = Total 27hrs (all bin 1X1) Astronomik filters
-35C chip temp, darks and flats (AstroHandy LightRing used for flats)
12MPPS download speed = 1.5sec/full frame download at bin 1X1.
FOV = 1.2deg X 0.9deg at 1.4"/pix
Guide Camera: Starlightxpress SXVH9
Comments:
Taken over 7 nights from Bob and Pats farm
Average seeing