Born in Radlow, Galicia, Austrian Empire, he traveled widely, first to Germany, France as well as the Balkans, and later also to Turkey, Egypt and the Sudan.
Upon his return to Germany and later to Austria, he published several books on the geography, ethnic groups and political conditions of the historic Sudan in the 1870s and 1880s.
[2] In 1877, Buchta arrived at Khartoum, where Charles George Gordon, then Governor-General of the Turkish-Egyptian Sudan, facilitated his onward journey to Emin Pasha at Ladó, on the Upper Nile.
Upon his return to Germany in 1881, he published his impressions along with 160 mounted albumen prints in the book Die obern Nilländer: Volkstypen und Landschaften.
[2] On the occasion of an exhibition of his photographs in 2015, the Pitt Rivers Museum wrote: "His journey into Equatoria Province (now parts of South Sudan and northern Uganda) shaped the visual representation of its peoples in European literature for a generation, being celebrated and reproduced, mostly in engraved form, by all the major explorer-writers of central Africa in the period.