Abell 33 (Diamond Ring Nebula) from Telescope Live CHI-1-CMOS
From time to time, I acquire data sets from remote observatories around the world. One of my favorite providers is Telescope Live, which operates a network of telescopes in Chile, Australia, and Spain.
Among the data I received was a beautiful LRGB and HSO data set of the planetary nebula Abell 33, located in the constellation Hydra. This nearly perfectly round nebula, sometimes referred to as the “Diamond Ring Nebula” due to a foreground star overlapping its rim, is a striking example of symmetry and color contrast in the late stages of stellar evolution.
Data calibration, registration, and final image processing were all performed in PixInsight.
The result was as follows:
In the image you can also find some quasars. The most distant of them is:
SDSS J093957.08-024301.1 with a redshift of 2.396 and an apparent magv of 21.2 (SDSS DR17).
The faintest star in the image has an apparent magnitude of more than 23 magv (SDSS DR17).
The images were taken with the following equipment (Telescope Live CHI-1 CMOS):
- Date: 2025
- Location: El Sauce Observatory, Chile
- Telescope: Planwave CDK24
- Focal length [mm]: 3962
- Focal ratio: 6.5
- Mount: Mathis MI-1000/1250
- Camera: QHY 600M Pro
- Filter: L:R:G:B:[OIII]
- Exposure time [min]: 120:120:120:120:410
- Resolution: 0.39″/px (2×2 binning)
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