Glass positive, 12"x10" of the planet Pluto, in the neighbourhood of Zeta Geminorum, 2.4. 30. Scale 1mm = 5secs. of arc Glass positive
Glass positive, 12"x10" of the planet Pluto, in the neighbourhood of Zeta Geminorum, 29th March 1930. Scale 1mm = 5 secs. of arc Glass positive
