Cold war era aerial pohotgraphy equipment?

Hello, I recently received a set of aerial photography equipment from my grandfather. it has been in his garage for a few years. I was hoping some one could help me with a value or correct identification. So far I cant find much on the items them selves.
Here is a list of what i have.
4-fk 24/120 film canisters
1 Nt1 Scope
1 AS 2 stabilizing mount
1 AS 3 Stabilizing mount
2 IRU cameras Tessar lense 1:4.5 f=180 mm
1 RMK 30/23 camera Carl Zeiss Topar A 1:5.6 f=305mm
1 RMK A 21/23 Camera Carl Zeiss Toparon lense 1:5.6 f=210 mm