Horsehead NGC 7023
The Iris Nebula

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Date: September 21, 2005
Exposure: RGB 120:120:135 : 8 x 900 R, G, and 9 x 900 B
Processing: CCDSoftV5 for image acquisition, MaxIm for Image calibration,(5 flats each RGB, dark subtracted and median combined, 20 bias frames median combined, 10-900s darks median combined), alignment, normalization, color combining. PixInsight for background correction and color gradient removal. Photoshop CS for final color balance and jpg conversion.
Conditions: Average, Mag 3-4 Skies
Scope: RCOS 16" Truss
Camera: SBIG ST-10XME, Custom Scientific LRGB filters, -15°
Comments: I have been chasing this one for a long time and conditions were good enough to try it. I didn't get a chance for any Luminance data as weather controlled that, so some of the dust clouds around the central star aren't as prominent as they could be. There's always next year.....