Click the Index button to download only the index pdf, click the Planfile & Tours button to download only the AstroPlanner planfiles and tours. Use the green download button to download the complete edition. Please read Downloading CSOG and iPad Astronomy.
Struve
Friedrich Georg Wilhelm von Struve (STF, STFA & STFB) and Otto Wilhelm von Struve's (STT & STTA) catalogs of double stars.
STF: 3083
STFA: 59
STFB: 15
STT: 599
STTA: 255
Data from the Washington Double Star database (WDS2020.5, through AstroPlanner) was used to compile this edition.
Where Struve's designation is not the primary designation in WDS, the WDS designation is added in parentheses.
Where WDS data was inconclusive, data from Jan Weis' book was used.
As the WDS catalog is, for the most part, included in SkySafari, Skylists are included with this edition. Since SkySafari uses its own database and designations, the Struve designation can be found under "comments".