D-19 is the old standby for astronomical imagery primarily due to its high straight-line gamma and short toe (low fog level). It was used with plates from about the early part of the last century up through the 80s when CCD detectors came into wide use. I used it with the standard glass-plate emulsions for astrophotography forty years ago, 103a and the like. It was also used for spectroscopy and for "patrol" cameras that were used primarily to record and discover asteroids.

For consistency you should always measure and set the developer pH to the level (around 10 to 11) that gives you the result you want.