Monthly Notices of the Royal Astronomical Society Volume 64 by Royal Astronomical Society
---------------------------------------------------------------
Author: Royal Astronomical Society
Page Count: 266 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130253115
File Name: Monthly.Notices.of.the.Royal.Astronomical.Society.Volume.64.pdf
Download Link: Monthly Notices of the Royal Astronomical Society Volume 64
---------------------------------------------------------------
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 Excerpt: ...(Communicated by Professor H. H. Turner.) 1. The suggestion that such work as the following might have value came from the recent experience of the Oxford Observatory in the work on the Rousdon variable stars. Existing positions for the comparison stars are usually given only roughly, and sometimes there is a doubt about identification in consequence. It was therefore felt that accurate places would be desirable. In this particular case it will be seen that the places good enough for a working chart at Rousdon were sometimes 5' in error. 2. There would also seem to be good general reasons for accurate surveys of special regions, especially those that were previously known to contain objects of interest. On this account the region of variables is sure to be under close observation, and a detailed study of them will be given which it will not be possible to extend to the whole sky. 3. The photographic plate, which is the basis of the following catalogue, was taken at the University Observatory with the 13-inch astrographic telescope on the night of 1903 November 15. The plate was exposed from ih 8m 5o'-o to 2h 9TM local sidereal time. As a few seconds-of time were lost in the middle of the exposure the time was approximately one hour. The plate is a good one and shows stars of about the 14th magnitude, as one. would judge by comparison with stars of known brightness. The variable itself has a diameter of 614, or i8"-42, which from the formulae which were used would give a magnitude of M, 7"4 and M2 7'8 respectively. The centre of the plate adopted was R.A. i9h 32m 56s, D. + 490 52' 3o"-o, which is approximately the position of the variable. It was measured in the following weeks by myself in the direct and reverse positions, as is the custom in...
Read online Monthly Notices of the Royal Astronomical Society Volume 64
Buy Monthly Notices of the Royal Astronomical Society Volume 64
Download and read Monthly Notices of the Royal Astronomical Society Volume 64 ebook, pdf, djvu, epub, mobi, fb2, zip, rar, torrent
Download to iPad/iPhone/iOS, B&N nook Monthly Notices of the Royal Astronomical Society Volume 64