Sunspots by Rolf Meier (1978-03)

Image catalogue: 

Observer: 

Taken on February 4, 1978, exposure time 1/15 second on High Contrast Copy
film using a Criterion filter together with the telescope opposite.
North is up. Rick (Wagner) says that the group in the upper right went on to
become one of the largest in recent years, becoming naked (protect-
ed)-eye and covering eleven thousand-millionths of the solar disc.

(Scanned from monochrome reproduction in AstroNotes)