Hi, I am not sure if this is possible. If you want to try this way you must search for an UCAC3 URL that return exactly the same format as the USNOA URL. Try this in your browser. Then replace the URL for USNOA by the one for UCAC3 in extres.ini, by selecting USNOA in the menu you have now UCAC3.
Patrick >Hi, why not asking VizieR like for Usno A and B and GSC? >I tried to create a search-string for USNO3, added it to the extres.ini, but >it isn´t shown in the menue. >Isn´t it possible to add onlie-ressources (in this way)? >Kindly regards >Charlyms
