TY - JOUR T1 - Astronomical Observations and Experiments, Selected for the Purpose of Ascertaining the Relative Distances of Clusters of Stars, and of Investigating How Far the Power of Our Telescopes May Be Expected to Reach into Space, When Directed to Ambiguous Celestial Objects. JF - Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843) VL - 2 SP - 100 EP - 101 PY - 1815/01/01/ UR - http://dx.doi.org/10.1098/rspl.1815.0092 M3 - doi:10.1098/rspl.1815.0092 AU - Herschel, W. ER -