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Boren-Simon 8" f/3.6, Starlight Xpress H9 Mono with Astrodon 6nm Ha and 3nm OIII. Skywatcher AZ-EQ6. Captured with Astro Photography Tool and guided with PHD. Processed in Pixinsight and PhotoShop.
The image is a bi-color image where Ha represent Red, Green is 65% Ha and 35% OIII finally OIII for blue. A superluminans is added at none linear stage.