scholarly journals Total eclipse of the sun, 1901, May 18. Preliminary account of the observations made at Pulo Aoer Gadang, West Coast of Sumatra

1902 ◽  
Vol 69 (451-458) ◽  
pp. 235-247
Keyword(s):  
Solar Eclipse ◽  
West Coast ◽  
The Sun ◽  
The West ◽  
Total Eclipse ◽  
Royal Observatory ◽  
Preliminary Account

The Admiralty having approved of expeditions from the Royal Observatory to observe the Solar Eclipse of 1901, May 18, I was instructed by the Astronomer Eoyal to occupy a station on the West Coast of Sumatra with the instruments used at Ovar in the eclipse of 1900, May 28. Mr. J. J. Atkinson, who accompanied the Observatory expedition to Ovar, again generously volunteered his assistance and is associated with me in all the observations. His advice and co-operation were of the greatest value throughout.

scholarly journals Total eclipse of the Sun, 1905, August 30. Preliminary account of the observations made at Sfax, Tunisia

1906 ◽  
Vol 77 (514) ◽  
pp. 28-41
Keyword(s):  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
North Coast ◽  
The Sun ◽  
Total Eclipse ◽  
The North ◽  
Royal Observatory ◽  
Preliminary Account

An expedition to observe the total solar eclipse of August 30 having been sanctioned by the Admiralty, it was arranged, in concert with the Joint Permanent Eclipse Committee, that a party from the Royal Observatory should make observations at Sfax, a town on the north coast of Africa, about 150 miles south of Tunis. The programme of observations consisted of photographs of the corona on various scales for coronal detail and streamers, and photographs of the spectrum of the corona and chromosphere. The observers from Greenwich who took part in the expedition were Sir William Christie, Mr. Dyson, and Mr. Davidson. Professor Sampson, Mr. J. J. Atkinson, and Captain Brett, D. S. O., generously volunteered their assistance and shared the work of erecting and adjusting the instruments as well as of the observations on the day of the eclipse.

scholarly journals Total Eclipse of the Sun, 1901, May 18. Preliminary account of the observations made at the Royal Alfred observatory, Pamplemousses, Mauritius

1902 ◽  
Vol 69 (451-458) ◽  
pp. 247-261
Keyword(s):  
Solar Eclipse ◽  
General Structure ◽  
The Other ◽  
The Sun ◽  
The Moon ◽  
Total Eclipse ◽  
Royal Observatory ◽  
Preliminary Account ◽  
Coronal Streamers ◽  
The One

An expedition from the Royal Observatory to observe the Solar Eclipse of 1901 in the island of Mauritius having been sanctioned by the Admiralty, I was instructed by the Astronomer Royal to proceed to that island, there to act in concert with the Director of the Royal Alfred Observatory, Mr. T. F. Claxton, who had expressed his desire to co-operate in the observation of the eclipse. In accordance with a scheme approved by the Joint Permanent Eclipse Committee of the Royal and Royal Astronomical Societies, I took out with me two instruments belonging to the Royal Observatory, Greenwich, for photographing the corona; the one giving an image of the Moon 2·4 inches in diameter, and intended to secure the general structure of the corona, and the other giving an image 0·3 inch in diameter, and intended to secure the outer coronal streamers.

scholarly journals Total eclipse of the sun, 1900, May 28. Preliminary account of the observations made at Ovar, Portugal

1901 ◽  
Vol 67 (435-441) ◽  
pp. 392-402
Keyword(s):  
Solar Eclipse ◽  
Large Scale ◽  
Total Solar Eclipse ◽  
Time Signal ◽  
The Sun ◽  
Structural Detail ◽  
Royal Observatory ◽  
Preliminary Account ◽  
Taking Charge ◽  
Daily Time

An expedition to observe the total solar eclipse of May 28 having been sanctioned by the Admiralty, it was arranged, in concert with the Joint Permanent Eclipse Committee, that the Royal Observatory party should take photographs of the corona on a large scale for structural detail, and on a smaller scale for the coronal streamers, and should also photograph the spectrum of the “flash” and of the corona. The programme thus naturally divided itself into two parts, Mr. Christie, assisted by Mr. Davidson, taking charge of the first part, and Mr. Dyson of the second. The party are much indebted to the Portuguese Government for the liberal arrangements made for the conveyance of the observers and their instruments in Portugal free of all charge to and from their observing station at Ovar, and for the great assistance rendered in erecting the instruments, and for a daily time-signal from the Lisbon Observatory direct to the observing station.

scholarly journals XLVII. Observations of the transit of Venus over the Sun, and the eclipse of the Sun, on June 3, 1769; made at the Royal Observatory

1768 ◽  
Vol 58 ◽  
pp. 355-365 ◽  
Keyword(s):  
The Sun ◽  
The West ◽  
Internal Contact ◽  
Royal Observatory

The weather, which had been cloudy or rainy here, with a south wind, for the greatest part of the day, began to clear up at 4 o'clock in the afternoon, the wind having returned to the west, the same quarter in which it had been the afternoon before, which was remarkably fine and serene, though it changed early in the morning preceding the transit. Towards the approach of Venus's ingress on the Sun, the sky was become again very serene, and so continued all the evening, which afforded as favourable an observation of the transit here as could well be expected, considering that the Sun was only 7° 3' high at the external, and 4° 33' at the internal contact. I observed the external contact of Venus at 7h 10' 58" apparent time, with an uncertainty seemingly not exceeding 5"; and the internal contact, by which I mean the completion of the thread of light between the circumferences of the Sun and Venus, at 7h 29' 23" apparent time, with a seeming uncertainty of only 3"; for so long was the thread of light in forming, or the Sun's light in flowing round and filling up that part of his circumference which was obscured by Venus's exterior limb.

Gulf of Siam

2016 ◽  
Author(s):  
Tamara Loos
Keyword(s):  
Solar Eclipse ◽  
The Sun ◽  
Historical Contingency ◽  
Total Eclipse

This chapter showcases the circumstances of a fateful solar eclipse as well as the events in Prisdang's childhood following the ascension of Chulalongkorn as Siam's new ruler. Here, the chapter shows how, on Tuesday, August 18, 1868, at exactly 11:36 A.M. and twenty seconds, the sun was in total eclipse as observed by King Mongkut through his telescope on the terrace of his temporary palace on Wako Beach. Historical contingency—the unpredictable trajectories of a limited set of options—brought Prisdang, his father, King Mongkut, and his son to this remote beach, where they all contracted malaria, thus setting in motion a train of events that were equally unpredictable.

scholarly journals XXXIV.—On the Total Solar Eclipse of 1851

1853 ◽  
Vol 20 (3) ◽  
pp. 503-511
Author(s):  
C. Piazzi Smyth
Keyword(s):  
Solar Eclipse ◽  
Physical Characteristics ◽  
Total Solar Eclipse ◽  
The Other ◽  
The Sun ◽  
Total Eclipse ◽  
Crucial Test

Eclipses are still, as they have ever been, very important phenomena for the astronomical observer; partly on account of the crucial test which they afford for the examination of the truth of the theory and calculation of the motions, real and apparent, of the Sun and Moon, partly also for the special opportunities which they furnish of inquiring into some of the arcana of the physical characteristics of those bodies.For the former purpose, a partial eclipse will serve almost as well as a total one; while the continued improvement of the observation of meridian passages is now raising these daily measures fully to the importance of the other occasional phenomena, as a test of the theory. But for inquiry into the physics of the Sun, a perfectly total eclipse of that body is necessary; revelations may then happily be procured, which no observation of any other phenomena at any other time, can hope to afford any suspicion of.

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