Astro Physics 130mm at F6 using Kodak PJM-2 Multispeed film.
10 bit/color Scans using HP Photosmart scanner and VueSmart program
Use "Reset" under Color Balance for auto color and brightness level
In Composite Mode, use 2 Point, Subtract Mode, Auto for Fine Alignment
Comparison of three possible combining selections.
(Note that "Image Amt" should be set at 100% resulting in a 50/50 combining for the overlay % shown above)
"Add" was chosen for the remaining processing
Use "Log" selection under Brightness Curve Options to show detail
Adjust curve lower at bottom left to obtain darker background
Adjust curve higher near center to brighten outer cluster stars
Use Unsharp Mask at 100%, Radius 2, Threshold 16
Increase Color Saturation 20%
The 5 Min exposure is first enhanced using techniques described previously.
A mask is made by using the Mask Curve feature to select the brighter stars.
Additional final adjustments included sharpening by masking and brightness leveling
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