Observatory
image (L-shaped): 15.6 x 15.5 cm (6 1/8 x 6 1/8 in.)  sheet: 16 x 15.8 cm (6 5/16 x 6 1/4 in.)  support: 48.8 x 33.7 cm (19 3/16 x 13 1/4 in.)

About Themistocles von Eckenbrecher