In the hay day of 35mm film, the Astronomy magazines used to have ads for gear and materials that hyper-sensitized films for astrophotography. Years ago, I ran across a reference to this technique being used with the glass plates used for serious scientific work at an observatory.

Typically, these treatments involved soaking the emulsion in an oxygen free gas (don't remember what gas) at some moderate pressure and a temperature somewhat above room temp.

Do any of these techniques have a place in glass plate photography today . . .Wet or Dry?