Originally posted by Votesh none of the suggestions so far would actually help me get the photos I want.
If you are serious about the kind of photo you have in mind, you'll probably have to do the following:
- Take a long-term exposure with the foreground (star trails).
- Create a mask for the foreground in PS.
- Take ~100 short term exposures ~10s each.
- Mask out the foreground in the 100 exposures and black it out (PS action).
- Overlay the 100 exposures, e.g., using PhotoAcute
- Now adjust black level and levels so now you get a starry night
- Recombine foreground and background from the overlay, using the same mask.
This gives you the starry night result you may have in mind. Don't expect any technology to give you the amount of light a hundred exposures can give you. Of course, a fast lens may help but beyond f/2.8, even the best lenses become soft.