[Half-hours with the Telescope by Richard A. Proctor]@TWC D-Link bookHalf-hours with the Telescope
CHAPTER V
12/22
21, -- --, 10 16 ---- Nov.
3, -- --, 10 29 ---- Dec.
16, -- --, 10 42 ---- Jan.
28, 1870, 10 55 ---- From one or other of these tables every observable minimum can be obtained.
Thus, suppose the observer wants to look for a minimum during the last fortnight in August, 1868.
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