The Helix Nebula, NGC7293 / Caldwell 19, south of Aquarius.
Imaged through 80mm Celestron 80ED, with Antares 0.5x Focal Reducer, DSI Pro II,
Schuler Ha (9nm) and OIII (15nm) narrowband filters. Orientation: North = Left.

Mapped as R G B : Ha sG OIII, where sG is Ha multipled by OIII to create a synthetic Green channel.

Ha: 100 x 60 seconds
OIII: 72 x 60 seconds