Join Date: May 2009
Location: Behind the Face Mask
thanks. This is helpful because it determines optimal focal length. But it is not the only issue. Key is that you need multiple exposures (2 or 3 for the foreground, 1 for the church, and then 5 or more for the sky). Then you need to blend them together in Photoshop, which is easy enough but problem is that stars "move" so for 5 exposures they will be all over the place. So you need specialized software to blend these 5 or more exposures to "pin" the stars into single layer. I don't know if Photoshop can do that.
People see these milky way shots but don't realize how much work goes into astrophotography,