Comet 17P Holms over a century ago

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kochu
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Comet 17P Holms over a century ago

Post by kochu »

Some wonderful photos of 17 P Holms taken in 1892 by EE Barnard and posted by

James McGaha, MS, FRAS
Director, Grasslands Observatory, 651


Kochu/12-11-07
==================
Photographs of Comet 17P/ Holmes

In 1892, a few days after Comet Holmes discovery,
E. E. Barnard Photography the comet at Lick Observatory
using the 6" F5.16 Willard Portrait Lens. These photographs
were published in the Publication of the Lick Observatory
Vol. XI – 1913.

The photographs were scanned at 600dpi and adjust in PS2.

Plate 102
10 November 1892 at 7h 45m P.S.T.
Exposure 3h 0m
Comet – 8' diameter with outer ring of 19' diameter

Plate 103
10 November 1892 at 7h 45m P.S.T.
Exposure 3h 0m
(enlargements of Plate 102)

Plate 104
21 November 1892 at 9h 32m P.S.T.
Exposure 1h 15m
Comet – 19' diameter

Plate 105
8 December 1892 at 6h 57m P.S.T.
Exposure 1h 15m
Comet – 25' diameter

James McGaha, MS, FRAS
Director, Grasslands Observatory, 651

http://www.skepticus.com/images/Holmes%20Plate102s.jpg

http://www.skepticus.com/images/Holmes%20Plate103s.jpg

http://www.skepticus.com/images/Holmes%20Plate104s.jpg

http://www.skepticus.com/images/Holmes%20Plate105s.jpg
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