comet eyepiece
Datecirca 1875
Inventory Number2007-1-0071
ClassificationEyepiece
Subject
Attributed to
Alvan Clark and Sons
1846 - 1958
User
Oak Ridge Station
1931 - 2005
User
George R. Agassiz Station, Harvard
1951 - 1982
User
Harvard College Observatory
founded 1839
Cultural Region
Place of Origin
Dimensions10.9 × 10.9 × 27 cm (4 5/16 × 4 5/16 × 10 5/8 in.)
Material
DescriptionA large glass lens is mounted at one end of unpolished brass cylinder. A smaller lens is at the other end at the opening in a flat plate. The plate has knurled edges. A hollow cylinder is attached to the center. Its inner diameter is 2.9 cm (1.14 inches), and would accept eyepieces of that dimension.
Signedunsigned
Curatorial RemarksThe inner diameter of this comet eyepiece would take oculars of 2.9 cm O.D., which would be those by Alvan Clark. This suggests that the comet eyepiece was by the Clark firm.
ProvenanceHarvard College Observatory, Agassiz Station; transferred to CHSI, 1981.
Historical AttributesUsed by Harvard College Observatory, and transferred from its Agassiz Station to the Collection in 1981.
Alvan Clark and Sons
Date: 1910
Accessories: shipping crate, terrestrial eyepiece, dust cap, mount and tripod (2003-1-0077b)
Object number: 2003-1-0077a
Alvan Clark and Sons
Date: 1867
Accessories: wooden box; screws (3)
Object number: HA0112e