Janus: Papers of John Guy Porter

RGO Archives/RGO 45 contains:
<-- See earlier
241	Script for 'The Night Sky in August'
242	Script for 'The Night Sky in September'
243	Script for 'The Night Sky in October'
244	Script for 'The Night Sky in November'
245	Script for 'The Night Sky in December'
246	Script for 'The Night Sky in January'
247	Script for 'The Night Sky in February'
248	Script for 'The Night Sky in March'
249	Script for 'The Night Sky in April'
250	Script for 'The Night Sky in May'
251	Script for 'The Night Sky in June'
See later -->

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Papers of John Guy Porter

Title	Script for 'The Night Sky in January'
Reference	RGO 45/246
Covering Dates	Jan. 1951
Extent and Medium	5 pages

Content and context

A copy of Porter's script for 'The Night Sky in January' on days and the division of the year; Arcturus in Boötes, Alcor, Mizar and the Pointers in the Great Bear, and the Little Bear; precession, varying pole stars and the motion of the pole; the night sky in 11,000 years' time, with the Southern Cross visible in England, but Orion and Sirius below the horizon; precession being noticeable in a very short time with very accurate measurements; and the Earth as a time-keeper, comparisons with crystal docks and seasonal fluctuations in the Earth's rotation.

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