Shutter for observing Aurora, H.O.5, on brass foot 4" diam. sliding pillar, wedge about 6 1/2" long, 3/4" wide, rack and pinion adjustment, scale in inches and 1/10 nod 0 to 65, vernier (unusual kind) and wooden case. Wooden velvet covered cap for eye end, brass view tube 8 1/2" long with sliding tube, extra brass end for glass Shutter for observing Aurora
Photograph of a Zenith telescope (6 3/4" x 9 1/2") with description by Professor Respighi (pamphlet). Zenith telescope
Star spectroscope by Merz H.O.^.2 from the Hydrographic Department of the Admiralty and used during the British Antarctic Expedition of 1901 with case [Regd Papers 761/08, file 911] Star spectroscope by Merz H.O.^.2 from the Hydrographic Department of the Admiralty
Four photographic views of Pulkovo observatory, St Petersburg in Russia, 1876. Four photographic views of Pulkovo observatory