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[2009-08-25] Hubble Palette with Astronomik Hα 12nm filter and Astronomik OIII 12nm filter and Astronomik SII 12nm filter, Orion 10" Newtonian on CGE (Baader Coma Corrector) with CCD-Labs Q8 (Q453HR) (gain 1, offset 130).
R=SII 12x600sec, G=Há 10x600sec, B=OIII 9x600sec (total 5 hours 10 minutes)
Guiding through Celestron C80ED with Orion StarShoot Autoguider
Two versions are shown: (a) create RGB image out of unstreched component images, and then apply standard postprocesing in Photoshop; (b - shown with mouse over) process each component image separately in Photoshop so their histograms look similar and put them together into an RGB at the end.
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