Planetary Nebula in Hydra. Abell 33 is an attractive symmetrical planetary nebula in the constellation Hydra.
It has been called the diamond ring nebula because of the mag 7 star HD83535 that shines on its outer ring.
The star is a foreground star that is not associated with the nebula.
It is fairly strong in OIII and fairly weak with no distinct structure in Ha.

Imaging Camera: QSI540 wsg
Imaging Scope: 9.25" Celestron edge at F/10
Guide Camera: SX Lodestar x 2, PHD2
Mount:Avalon M Uno
Filters: Astrodon
Exposure: 10 minute subs. 3 hours 5nm OIII and 4 hours 5nm Ha, all binned X2
Processing: CCD Stack and PS CS2.
Date: 1/4 -1/5/16
Location: My front driveway. Morristown, NJ