Technikatörténeti szemle 19. (1992)

TANULMÁNYOK - Bartha, Lajos: In Memoriam Miklós Konkoly Thege (1842–1916)

4. Konkoly's refracting telescope fitted for taking photos of the sun from 1905. The person shown sitting next to the instrument is mechanician Janos Klassohn (Photo taken by M. Konkoly Thege)