Houghy,
I think you'll find its the ratio of hours per narrowband filter SHO 6:5:22 (S2=6hrs, Ha=5hrs, O3=22hrs)
The Oxygen filter requiring a huge increase in exposure time compared to the others to produce a false colour image acceptable to Martin for his rendition.
Quote:
Originally Posted by h0ughy
. . . do i read that as 6 weeks 5 days and 22 hours? . . .
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Another great image Martin !