Iris Nebula, beauty in the dark

Iris Nebula, beauty in the dark

The Iris Nebula, NGC 7023 or Caldwel 4, includes an open star cluster and its associated reflection nebula, surrounded by dark absorption nebulosity. These images were taken the mornings of 2022-06-01 and 2022-06-02 from just NW of Flagstaff, Arizona. The nebula is about 3 light years in diameter and 1300 ly distant. A total exposure of 225 minutes taken as 45 five minute exposure. Photographed with a with a William Optics RedCat 250/51mm telescope, Baader UV/IR cut filter, ZWO ASI 533 MC camera, SkyWatcher AZ-EQ5 mount, and ASI electronic auto focus and guide camera. All were controlled with a ZWO ASIAir Plus Controller. Proess in PixInsight with *XTerminator and GHS plugins with final exposure and crop in Photoshop.

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Date Taken: 2022-06-02




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