TY  - JOUR
T1  - Observations of Immersions and Emersions of Jupiter's First Satellite, Made at Funchal, in Madeira, with a Reflecting Telescope of 18 Inches Focus, Made by Mr. Short. The Time Was Found by Taking Equal Altitudes, with a Quadrant of 12 Inches Radius, Made by Mr. Bird, and with the Help of a Good Pendulum Clock Made in London. By the Late Thomas Heberden, M. D. F. R. S.
JF  - Philosophical Transactions (1683-1775)
VL  - 60
SP  - 502
EP  - 503
PY  - 1770/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1770.0044
M3  - doi:10.1098/rstl.1770.0044
AU  - Bird, M.
AU  - Short, M.
AU  - Heberden, T.
ER  -