You are doing some nice camera lens work Bill, I'm enjoying it, cheers.
You will need to combine them all into a Milky Way mozaic when you have finished.
Back in 1984 when still at high school in Canberra, a friend of mine Attila Horvath and I mozaiced the Milky Way one night with Kodak Ektachrome 400 plus 50mm lens at f2.8 with a series of 30 and 45min exposures from dusk to dawn and it come out great. so much so that the resulting (huge) 9 X A4 colour print mozaic, along with several other panels of our astrophotos plus info, won us three awards and $180 (lots of dosh for two 17 year olds then!) at the 1984 ACT Schools Science Fair (most success by a single entrany till then too) the astrophotography bug had well and truly bitten...and, well?...has never let go
MIke