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Showing 256 to 270 of 519 results
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Fringes at solar limb
Possibly related to PB11_0004. Presumably from observations made with the coelostat. n/a. Extent: 1 photograph. Size and dimensions of original…
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Fringes at solar limb
Possibly related to PB11_0005. Presumably from observations made with the coelostat. n/a. Extent: 1 photograph. Size and dimensions of original…
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Boyden coelostat (external components)
Building visible in background. n/a. Extent: 1 photograph. Size and dimensions of original material: Height 20cm, width 25cm. Condition of original…
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Solar limb with prominence
Possibly related to PB11_0001. Presumably from observations made with the coelostat. n/a. Extent: 1 photograph. Size and dimensions of original…
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Solar limb with prominence
Possibly related to PB11_0002. Presumably from observations made with the coelostat. n/a. Extent: 1 photograph. Size and dimensions of original…
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Aerial view of Boyden Observatory
Stamp on back: "The Friend Newspaper Ltd. / COPYRIGHT / Not for Reproduction.". n/a. Extent: 1 photograph. Size and dimensions of…
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Boyden Station, Arequipa, Peru
Written on back: "Southern Station of Harvard College Observatory in AREQUIPA, PERU. (Volcano EL MISTI in background). / ~1900.".…
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Bart and Priscilla Bok at Bloemfontein station, 1950
Written on back: "The Boks at Bloemfontein railway station, 1950.". n/a. Extent: 1 photograph. Size and dimensions of original material:…
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E.M. Lindsay and the ADH Telescope
PB11_0009, PB11_0022, and PB11_0048 are duplicates. n/a. Extent: 1 photograph. Size and dimensions of original material: Height 19cm, width 25cm.…
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ADH with roof open, roof extension
Rare view showing the vertical extension in the centre of the roof. n/a. Extent: 1 photograph. Size and dimensions of original material: Height…
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ADH mirror being examined by 5 people
People (l.t.r.): Unidentified male, unidentified male, Bart J. Bok, J. S. Paraskevopoulos, unidentified male (possible M.J. Bester). PB11_0011 and…
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ADH mirror being examined by 6 people
People (l.t.r.): Unidentified, unidentified, Bart J. Bok, unidentified, J. S. Paraskevopoulos, M.J. Bester. PB11_0011 and PB11_0012 are related. n/…
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ADH Telescope
Mount is dark, telescope tubes are lighter in colour. One person near bottom end of telescope, to which a shroud is attached. Unusual angle. n/a.…
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ADH Telescope at Perkin-Elmer
Written note on back: "February 15, 1950.". Typed note on back: "HARVARD TAKES OVER GIANT TELESCOPE FOR 'MILKY WAY'…
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Aerial view of Boyden Observatory, 1951
Written on back: "1951 / ADH on right hand side - split roof of building open.", with labels to identify the ADH, 13-inch, and 60-inch. n…