Will_Beau

Hi, Dr. Castelaz. It was interesting to read in the Concordia article yesterday that the photographic plates vary in size and even shape. I would assume magnification, also. In the Astronomy Legacy Project, will it be possible to provide size scales so that different images can be sized to correspond to each other (star to star)? Were astronomers "back in the day" thinking ahead to when people might compare side by side plates from different sources and provided some reference marks like scales?

Is it possible to get measurements of luminosity from glass plates (and their scanned images)?