Also a description of a five-feet equaltorial instrument employed in the observations Sir John Frederick William Herschel. Polaris continued. Mean result . Position 6iAd 11a#39; sp. Distance 18aquot;.7o1. Epoch 1823.06. The positions agree very well.
|Title||:||Observations of the apparent distances & positions of 380 double & triple stars, made in the years 1821, 1822, & 1823, & compared with those of other astronomers...|
|Author||:||Sir John Frederick William Herschel|