Results of Astronomical Observations Made at the Observatory of Harvard College; Zone Catalogue of 5500 Stars Situated Between the Equator and 02 0' North Declination, Observed During the Years 1852 - 53
Results of Astronomical Observations Made at the Observatory of Harvard College; Zone Catalogue of 5500 Stars Situated Between the Equator and 02 0' North Declination, Observed During the Years 1852 - 53
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. 1855 Excerpt: ...150, +0e.30. In cases where Weisse's place is a mean derived from two or more Zones, only one of which is affected by the above emendations, a proper proportion of the correction has been taken. The number of stars of which the Eight Ascensions have been thus corrected, is two hundred and forty. The following ...
Read More
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. 1855 Excerpt: ...150, +0e.30. In cases where Weisse's place is a mean derived from two or more Zones, only one of which is affected by the above emendations, a proper proportion of the correction has been taken. The number of stars of which the Eight Ascensions have been thus corrected, is two hundred and forty. The following accidental errors of computation, or of the press, have also been corrected. The places of stars within the required limits occurring in the "Histoire Celeste" of Lalande have been deduced from the original observations, and from the Catalogue edited by Mr. Baily. They have been used as a check where there appeared to be any doubt as to the places of the stars in Bessel's Zones, and for the determination of proper motion. The positions taken from the Catalogue of the British Association have also been chiefly used for verifying other authorities. The numbers of stars derived from the above-mentioned sources are as follows: --From Weisse, ...... 1040 "Santini, ...... 124 "Riimker, ..... 98 "Taylor, ...... 75 "Struve, ..... 30 The Harvard Zones consequently contain about fourteen new stars to each one which has previously been observed. The result given by each authority has been printed, (after applying proper motion, when known, ) above the adopted mean. The weights employed in taking the means have been based on the number of observations, agreeably to the following table: --The above table is constructed on the supposition that the positions given by each authority are affected by errors of two classes, only one of which is susceptible of diminution by increasing the number of observations. 'The following instances of proper motion have been detected in the course of comparisons made mostly with the right ascensions and dec...
Read Less