Mr. Bond remarked, that, although these observations had been made at Dorchester, yet the results might safely be reduced to the new Observatory in Cambridge, by means of the differences of latitude and longitude given with each series, without risk of sensible error; the points of observation were within a small compass, and the differences had been accurately determined by triangulation. MOON CULMINATIONS, Observed at Dorchester with a Portable Transit Instrument of 22 inches Focus; corrected for Collimation, Level, and Azimuthal Deviation, and for Clock Error and Rate on Sidereal Time. Lat. +420 19 17". Lon. West of Greenwich, 4 h. 44 m. 17 s. |