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——————————— ????Target: The Iris Nebula NGC 7023 or Caldwell 4 ——————————— ????Gear: Imaging camera: Nikon D5500 Guide Camera: QHY 5L-II Mono Mount: Ioptron CEM25P Imaging telescopes or lenses: Sky-Watcher 80ED 80/600mm Omegon 50/200mm QHY PoleMaster ——————————— ⚙Settings: Focal Length: 510mm Aperture: f/6.3 ISO: 1600 30 x 300sec exposures ——————————— ????Location: NAO Rozhen, Bulgaria ——————————— ????Data: 06.07.2019 ——————————— ????Processing Frames: Light: 30x300" ISO 1600 Dark: 10 Dark Flat: 50 Flat: 50 Bias: 50 Processed in Photoshop, DeepSkyStacker, APT - Astro Photography Tool
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