Iris Nebula, NGC 7023

Iris Nebula, NGC 7023 Mount: MT-90 Telescope: TS-Optics Doublet SD-Apo 80 mm f/7 Reducer: TS-Optics REFRACTOR 0.79x 2" ED Reducer Corrector for APO und ED Camera: ZWO ASI 533C Pro Filter: Optolong UV/IR Cut Guide Scope: Svbony 60/240 Guide Camera: T7 Astro Total Integration: 3.5 hours Single Exposure: 200 seconds Bin: 1x1 Sensor Temperature: -5°C ISO/Gain: 100 Full calibration with 20 frames each (darks, biases, flats) Processing: DSS, FITStacker, Photoshop Sky Brightness: Orange Zone Date: September 8, 2021