MOON CULMINATIONS, Observed at Dorchester with a Transit Instrument made by Troughton & Simms, having an Object-glass of two and three quarters inches Diameter, and forty-six inches Focus; corrected for Collimation, Level, and Azimuthal Deviation of the Transit Instrument, and for Clock Error and Rate on Sidereal Time. Lat. +420 19 17". Lon. West of Greenwich, 4 h. 44 m. 17 s. |