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Log

Page	Plate	Class	Object	R.A.	Dec	Start	Obs H.A.	Obs Dec	Stop	Exp	Date	Miscellaneous
12	42938	L	Location			18 18	0 00	0	18 21	3	Oct 23-24 1950
12	42939	P	Polar			18 38	1 30 E	+90	21 38	180	Oct 23-24 1950	3 5m exposures, at start, center and end. 5m trail at end.
12											Oct 26 1950	Before plate AI 42939 was exposed, the Caloestat was reset in its N-S sector and anchored firmly in its new position. This necessitated a new series of polar adjustment, of which 42939 was the first. Adjustment made this date: W = 234°, N = ~ 100°.