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Hi Jeff,
I had a quick play with your image hope you dont mind.
Do you use Deepskystacker ? it's very good and free (i always use it for dslr shots).
I couldnt just raise the black point in PS without losing too much of the faint neb so I used apply image. Basicaly this will create an imag of the background noise and remove it from the main image. There are sophisticated ways of doing this but here' a very basic process for it.
here's how: (crude instructions, adjust to taste...)
duplicate your image twice
first copy use gaussian blur pretty much max
second copy: selection tool , select highlights (stars mainly), modify by expand by 4 pixels, modify feather by 2 pixels, invert selection (so everything BUT the stars is selcted) adjust levels-black point- to make everything dissapear except the stars. deselectuse a very mild guaaussian blur to softer if you wish this is now your mask. may increase contrast a tad if you wish
(all these steps require a bit of experimenting and playing with settings)
then go back to main image, lick on it so it is the one that is active
go image and click on "apply image"
inthe new window in the drop down select the first copy
in the bottom of the window click on mask and select the copy 2
then in the setting boxes you'll probably want to use subtract , i changed the offset to 3 to get the attached pic.
hope this helps a bit
longer exposures will probably get rid of the streaks but you'll need good guiding
cheers
frank
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