Astronomy

Databases

Get a snapshot of PPM catalog stars on your meridian from here


Browse the Messier catalog by name or by ra


Browse the Yale Bright Star Catalog (revised) by index


Browse the NGC New General Catalog with IC, j2000.0 (revised) by type
try type=OC, Gx, DS, TS, ast, Kt, P, N, etc, more to follow....


Or, select type for NGC viewer



View an HR diagram from Tycho data.


Create an HR diagram from Tycho data.


My Astrophotography


IAU Constellation guide


Another view of the Constellation guide


database howto