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This photo was taken over the course of 3 nights starting on 5/31/2020
10" f/8 Ritchey-Chretien on an Astro-Physics 900GTO mount. SBIG 8300M camera with a CFW5 filter wheel. Guiding with Lodestar X2 using ONAG.
This is a picture of planetary nebula Abell 39. The photo was taken using an OIII narrowband filter to bring out the blue color and fine details of the nebula.