To improve colors and details, I have used an hybrid color palette composed by narrowband, red and blue data that shows
together primary and complementary colors along a continuum.
125 raw H-alpha images of 10 minutes each unbinned
129 raw OIII images of 10 minutes each unbinned
132 raw SII images of 10 minutes each unbinned
91 raw Green images of 1 minute each binning 2x2
90 raw Green images of 1 minute each binning 2x2
89 raw Blue images of 1 minute each binning 2x2
Total 656 raw files
68h50 total exposure from 08/22/2016, 08/23/2016, 08/24/2016, 08/25/2016, 08/26/2016, 09/01/2016, 09/02/2016, 09/03/2016, 09/04/2016, 09/06/2016, 09/07/2016, 09/08/2016, 09/09/2016, and 09/10/2016
A full resolution of 8332x5829 pixels for a total of 48MPixels
FOV 4.8° x 3.4°
50 bias + 50 dark + 50 flats for calibration in CCDStack
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Takahashi FSQ106ED @f/5 530mm focal length with ONAG XT (
http://www.innovationsforesight.com/), Apogee Alta U8300 monochrome @-30°C and Astrodon narrowband H-alpha, OIII and SII 5nm filters and Astrodon broadband RGB filters on 10micron GM2000 HPS II
Software: MaximDL to capture - SkySurveyor to calculate mosaic tiles and to automatically move the scope to the next tile coordinate - SharpLock to keep the optical train perfectly focused - CCDStack to calibrate, register, normalize, data reject and combine - Registar and PixInsight for mosaic assembly - Photoshop CC and PixInsight for LRGB composition and non-linear streching.
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