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| All taken with a 12'' F4 Skywatcher Quattro Newtonian and Canon 1000D DSLR at prime focus with a coma corrector (unless stated), ISO1600. Processed with GIMP and DSS. 1x1 binning corresponds to 0.98'' per pixel. Search options: | ![]() Abell 539 (in Orion); Total exposure: 5385 secs; Binning: 1x1 Observation date: 31/12/2019 + 20+22/1/2020 + 18+19+25/1/2023 Image created: 19th February 2023 Category: Galaxy | Quick links |