This is not exactly the very first.. but it is the oldest I managed to find...
It was done with 36mm camera (Smena-8) on BW film (ORWO?), 17 DIN.
The very first one was of Alpha Ursae Minoris, through the telescope (45mm dia, 700mm FL) with eyepiece projection, using home-made camera on 35mm film (KB17, developed by myself in local photo club).
Those were the days...