NGC7023, The Iris Nebula in Cepheus

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Date   09/19/2006,09/20/2006,09/21/2006
Conditions   20.31 mags/sq arcsec at zenith
Scope   Vixen VC200LDG @ f/9
Optics   Baader UV-IR Cut Filter
Camera   Canon 350D (IR modified)
Exposure   90 x 5 min, ISO 800
Processing   ImagesPlus 2.8 dark/flat/bias calibration, stacking, DDP, star reduction; PS CS2, curves, saturation, Hi-pass; Noel's Actions, noise reduction; Gradient Exterminator;
Notes   The Iris is predominately a reflection nebula. From 1400 light years away it reflects the light from it's central 7.4 magnitude star. The open cluster CR427 is also visible as if through a window in the nebula.
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