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Search - Results Of Astronomical Observations Made At The Sydney Observatory - New South Wales - In The Years 1877 And 1878, 1879-81 - Under The Direction Of H. S. Russell

Results Of Astronomical Observations Made At The Sydney Observatory - New South Wales - In The Years 1877 And 1878 1879-81 - Under The Direction Of H S Russell
Author: Various

IN the first volume of observations published by the Sydney Observatory will be found a description of the building and instruments in use at that time but since then the former has been much enlarged, and the latter replaced by new and larger instruments. It seems therefore desirable to give in this first volume of observations made with new in... more »struments some account of them and the building, so far at least as they affect the observations in this volume. The description of the large equatorial will be found in the volume of transit of Venus results, and those of the meteorological instimments scattered through the annual volumes, but principally in 1873-1878, and 1879. SITUATION. The site of the Observatory is the best that could have bcen chosen in Sydney, placed as it is on one of the many headlands projecting into the harbour it is for that reason on the outskirts of the city, on the north side, and but few buildings can ever be made between it and the water, which surrounds it on three sides, east, vest, and north fortunately also it is on these sides that the prevailing winds blow, so driving away the smoke of the city, which lies to the south and south-east. It will be seen in the map that the building is placed on the highest land of and near the centre of Flagstaff Hill Reserve, which has an area of 10 acres, and is plantcd with ornamental trees, and surrounded with stone wall and iron fence. The main floor is 152 feet above the mean sea-level, and the timc-ball 61 fect above this, or 213 feet, which is high enough to be visible from the greater part of the harbour and city. The hill is solid sandstone, and affords therefore an admirable foundation. 6c 6-81 Introduction. PERSONAL ESTABLISHMENT. The personal establishment of the Observatory in 1877 consisted oflfr. H. A. Lenehan, Astronomical Assistant. Mr. E. G. Savage, teteorological Assistant. Mr. F. M. Bladen, in charge of Weather Map. In 1878 this was increased by the employment of Mr. L. Httr, tv a e s extra Observer. The duties of the Observatory have been distributed in the following manner -The Government Astronomer has taken the fulI direction and superintendence, together with the work of the large equatorial and all the col espondence. Hr. Lenehan has general charge of the transit observations with their complete reduction, and all time signals. Mr. Hargrave is charged with the examination of astronomical work, the computation of double star observations, and the work with No. 2 equatorial, together with some meteorological work. Nr. Savage has charge of the reduction of the meteorological returns from country stations, and in part with the preparation of the daily weather map. Mr. Bladen has charge of the meteorological observations at Sydney, and the daily preparation of the weather map. BUILDINGS. The photograph will give a better idea of the building than it would be possible to give here suffice it to say that it is a good stone building. The eastern and southern sides of the quadraqle were built in 1856-7 and the western side not seen, except part of the second dome was built in 1877 this was a much needed extension, giving seven additional rooms, and s second dome which was placed so that from it that portion of the eastern heavens which the time ball tower hides from the old equatorial room can be surveyed. Introdicclion. 3 The instrument mounted here is the fine 7-inch Mery refractor, which was described in vol. for 1862 the old dome was described in the 1860 vol. In 1874 the old 18-feet dome was removed and a new one put in its place, to cover the 114-inch equatorial...

ISBN-13: 9781408640524
ISBN-10: 140864052X
Publication Date: 1/31/2008
Pages: 108
Rating:

0 stars, based on 0 rating

Publisher: Read Books
Book Type: Paperback
Members Wishing: 0
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