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Transparency, 15"x12", Orion Constellation

1931

Glass positive:- Part of Ursa Major

1931

Glass positive:- Orion. From photograph taken with

1931

Region round South Pole

Photograph of stars centred on the star Gamma Cassiopeia, taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 90 minutes on 17th January 1890 at his observatory & home at Maghull, near Liverpool.

Photograph of stars centred on the star Gamma Cassiopeia

1890
Photograph showing Titanum Oxide spectrum, compared with the banded Spectrum of the Third type stars, as represented by Omicron Ceti in glazed frame. I. Spectrum Omicron Ceti ( Slipher), II. Spectrum of TI Oxide (Fowler).

Photograph showing Titanum Oxide spectrum

1911
Models of the Sun, planets and the 25 nearest stars. Scale 1,000,000 miles to one inch. In glazed frame-case 3'6"x2'0" x about 3" deep inside. (With magnifying lens for planets, and diagrammatic and descriptive matter fixed in case)

Models of the Sun

1930
Photograph of stars in the constellation of Cygnus, taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 60 minutes on 14th August 1887 at his observatory & home at Maghull, near Liverpool.

Photograph of stars in the constellation of Cygnus

1887