Diamond Ring Nebula - Abell 33

Image Title: Diamond Ring Nebula - Abell 33

Copyright: Massimo Di Fusco

Date image was taken: February 05, 2024

Location: Ferrara (Italy)

Data Acquisition Method: Personal Telescope Setup

Image Description and Details: Abell 33 (Also called A33 or the Diamond ring nebula) is a faint spherical planetary nebula located 2700 light years away in the constellation of Hydra. It lies just behind the star HD 83535, which has no relation to the nebula, that is responsible for the "diamond ring" effect seen in the photograph.
The nebula gets its coloration from the Olll emissions (doubly ionized oxygen) and the spherical shape is mainly caused by its central star not having much of a spin. Abell 33 shares similar morphology to another nebula with the same spherical shape, the Owl Nebula (M97) but is much darker than the Owl Nebula.

Equipment Details: Konus 200/1000 @950mm, f/4.8
Player One Poseidon-C camera @-5 °C
Sky-Watcher Eq6r Pro mount
Optolong L-Ultimate filter 130x300"
Optolong L-Quad Enhance filter 33x180"
N.I.N.A., APP, PixInsight, PS

Name: Massimo Di Fusco

Website or Facebook Profile: https://www.astrobin.com/users/massimo.difusco/