Layer 1 : 100%
Layer 2 : 50%
Layer 3 : 33%
Layer 4 : 17%
Layer 5 : 9%
Layer 6: 4%
Other coverage : 100, 50, 33, 25, 17, 14, 10, 7, 5 (credit Guido Gubbels)
Further editing using CS4, mainly with focus on the optimizing the histogram and using gradient tool. Credit by Guido Gubbels and e-book "Handleiding Astrofotografie" by Geert Vandenbulcke from VVS Werkgroep Astrofotografie.
