Group photo in front of the 13-inch Refractor pier
Scope & Content:
Four smiling males posed in front of the pier of the 13-inch Boyden Refractor. The view is to the south-west. The C-clamp-shaped polar axis, and the tubes of the double-refractor, are on the floor south of the pier. The person second from left is shown in PLB35_0035 et seq. n/a. Extent: 1 glas...
Boyden Plate Box 36: Boyden Observatory (60-inch dome construction) and Boyden scenes.
Scope & Content:
A valuable series of images documenting progress, from June 1931 to June 1932, on the construction of the 60-inch telescope enclosure. A few images are general site views showing several other enclosures. A faded pencilled note on the plate box reads: "Aug '84 60 inch dome construction ?60". n/...
60-inch Rockefeller construction site, 1931 July 22
Scope & Content:
An early, wide view of the construction site, looking east. The rock cutting for the building is visible, inside of which is a wood and metal frame outlining the building shape. Several people are seen. In the background the Modder River is visible. Power cables in the foreground bisect the imag...
Construction site of the 60-inch building, seen from the west-northwest. The circular wall of the turret is complete and the roof is starting to be assembled. Several truss elements can be seen to the left of the image. Left of centre is a machine, being operated by a person. Behind it is the te...
Construction site of the 60-inch building, seen from an elevated position in the west-northwest. The circular wall of the turret is complete and the roof is starting to be assembled. Several truss elements can be seen to the left of the image. Left of centre is a machine, being operated by a per...
A closeup view of one of the wheel units for turning the telescope turret. The circular wall, rail, wheel unit, and part of the turret trusswork, is shown. Several of the truss elements have annotations in white. n/a. Extent: 1 glass plate. Size and dimensions of original material: Height 8.2...
Interior view of the 60-inch Rockefeller building, with the turret walls still unclad. The mount (with a protective cover) is in place, and the telescope tube is mounted within its cradle. The observer platform can be seen, with two people standing on the elevated section. A third person stands ...
Construction of the 60-inch Rockefeller, 1932 June 15
Scope & Content:
Interior view of the 60-inch Rockefeller building, with the turret walls still unclad. The mount (with a protective cover) is in place, and the telescope tube is mounted within its cradle. The observer platform can be seen, with two people standing on the elevated section. A third person stands ...
Two images taking during a solar eclipse. Both images are undated, but this may be the 01 Oct 1940 event, documented elsewhere. n/a. Extent: 2 glass plates. Size and dimensions of original material: Height 8.2cm, width 10.7cm, thickness 0.3cm. Condition of original material: Stable. Author(...
An image of a plate. The plate gives a relatively wide-angle view of a total solar eclipse, showing the diamond ring effect. Using the diameter of the Sun as a scale, the plate is about 37° across. n/a. Extent: 1 glass plate. Size and dimensions of original material: Height 8.2cm, width 10.7c...