Winnecke Catalogue of Double Stars
Double star measurements is one of Friedrich August Theodor Winnecke in the " Astronomische Nachrichten " published in 1869 series of observations, in which he reported on a number of observations by means of various refractors in Bonn, Berlin and Pulkovo. This he added a list of seven "new" double stars. Later, he found that three of them (30 Eri, Bradley 757, and 44 Cyg ) had already been discovered earlier.
Abbreviations
Survey
Components
Swell
- Http://www.seds.org/messier/xtra/supp/wnc.html
- Astronomical data collection