Exercise book, used with stellar spectrograph, paper, used at Sydney Observatory, maker unknown, 1934-1944.
A lined exercise book with a marbled cover. The exercise book was used with the stellar spectrograph and contains notes on exposure of plates. The first entry in the book is dated 16th June 1939. Graphs and note paper are inserted inside several pages of the text book.
Piece of note paper inserted inside page 5
Graph inserted inside page 13
Three graphs and two sheets of note paper are inserted inside page 17
12 pages of note paper, a graph, a typed sheet and seven sheets of note paper that are pinned together are inserted inside page 23
Piece sheet of note paper inserted inside page 29
Two sheets of note paper inserted inside page 32
Text handwritten on the first page of the exercise book 'Hilger Stellar Spectrograph'.