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1958

Mars 195811012200

Mars 195811012200

1958 November 1 @ 22:00 EST, seeing 5. South is approximately up.

Drawings made through a 10" f/7.2 Newtonian. Power 150. Seeing in Pickering's scale; 5 is the best we ever have here. Polar region marked in dotted line: glimpses and doubtful. Time: EST.
Location: N.Lat. 45°17'31", W.Long. 72°33'02"; elev.: 650 feet
Address: S.A. Zielinski, Fulford, Que.

Mars 195811072100

Mars 195811072100

1958 November 7 @ 21:00, seeing 3-4. South is approximately up.

Drawings made through a 10" f/7.2 Newtonian. Power 150. Seeing in Pickering's scale; 5 is the best we ever have here. Polar region marked in dotted line: glimpses and doubtful. Time: EST.
Location: N.Lat. 45°17'31", W.Long. 72°33'02"; elev.: 650 feet
Address: S.A. Zielinski, Fulford, Que.

11 February 1958 Synoptic Auroral Map

EBriggs's picture
Posted in
Great Red Aurora Map 1958

By early 1958, under the auspices of the International Geophysical Year, the National Research Council had compiled a list of amateur contributors to an auroral research program. The period of maximum solar activity in an 11-year cycle had peaked in late 1957, and Helen Sawyer Hogg reported in her Toronto Star column of June 7th, 1958 that the relative sunspot number for December 24th and 25th was 355. This was the highest value ever observed, exceeding the value of 353 on May 17th 1778.

Year: 
1958
Pages: 
3
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