Holographic recording on board the Salyut-6 space station

A test object, a three-dimensional body, and a dissolving crystal were recorded using the GA-1 holographic instrument specially designed for use in space. It is found that crystals dissolve more slowly under low-gravity conditions than they do on earth (by a factor of approximately 20). It is shown that the details of the outer surface of a viewport in the spacecraft can be recorded holographically. Holography can be used in control and test experiments in space.