A comet on a trailed star field. Written on the plate: "Comet Peltier / 21h 21m -25.0° / Aug 6-7, 1936 / J.P's Voigtländer Camera attached to 10" MF / Exp. 2h (16:00 - 18:00 Sid.T.)". The JP mentioned in the caption is probably J.S. Paraskevopoulos, Director of the observatory 1927-1951. n/a. ...
A star field. Written on the plate: "Zodiacal Light. / -11° from 4:42 - 6:12 / (Morning of April 6-7, 1932) / Exp. 1h:30 - (beg. 4:42 end. 6:12)". Deterioration of the emulsion has resulted in uneven bright patches, making it very difficult to distinguish between the glow of the zodiacal light a...
Boyden Plate Box 32: Boyden Observatory, 60-inch dome construction
Scope & Content:
A collection of images, from June 1931 to June 1932, showing progress on the construction of the turret for the 60-inch telescope at Boyden Observatory. Of special interest are two images which show the truss work being assembled in Johannesburg in the yard of the manufacturer. A faded pencilled...
Assembling the observing platform of the 60-inch Rockefeller Telescope.
Scope & Content:
The view from inside the partially-completed 60-inch dome, looking approximately east, showing the assembled observing platform of the Rockefeller Telescope. The trusswork of the dome is not clad, and the dome rollers can be seen. Four persons are standing on the platform and two at its base. No...
Assembly of the 60-inch enclosure at Hubert Davies & Co., Johannesburg.
Scope & Content:
The truss work of the walls of the 60-inch building, assembled outside at Hubert Davies & Co. in Johannesburg. The assembly rests on stacked planks. Several annotations in white can be seen on the components. A lady, dressed in a coat, wearing a hat and gloves, and clutching a purse, is stan...
Assembly of the 60-inch roof truss at Hubert Davies & Co., Johannesburg.
Scope & Content:
The assembled roof trusses of the 60-inch building, assembled outside at Hubert Davies & Co. in Johannesburg. Several annotations in white can be seen on the components. A lady, dressed in a coat, wearing a hat and clutching a purse, is standing inside the assembly and posing for the photogr...
60-inch Rockefeller building under construction, 1931 November 11
Scope & Content:
Construction site of the 60-inch building, seen from the west. The primary brickwork is in place: the foyer in the south-west, and the circular dome support wall. On top of the circular wall the lowest portion of the metal wall truss can be seen, supported on stacked columns of wood. Two tall V-...
Construction of the 60-inch building, viewed most likely from the north. The walls and roof trusses of the turret are in place. The central section of the telescope tube is being moved into the turret. Inside the turret the upper section of the telescope tube, partially encased in planks of wood...
60-inch Rockefeller building under construction, 1931 November 21.
Scope & Content:
Construction site of the 60-inch building, seen from the west. The building's primary brick work is partially completed. Within the pit, the south pier is being constructed. The top of a crane standing in the pit can be seen. A "RANSOME" machine is visible in the midground. Near the left edge of...
Group photo during 60-inch Rockefeller building construction, 1931 July 16
Scope & Content:
Construction site seen from roughly west-southwest. Three groups of people are posing in the cutting into the bedrock within which the 60-inch building will be constructed. 9 people are standing within the cutting, several holding tools. Behind them stands a vertical pipe held in place by suppor...