telescope eyepiece
Datecirca 1855
Inventory Number2007-1-0180
ClassificationEyepiece
Subject
Maker
Marc François Louis Secretan
1804 - 1867
Maker
Secretan
founded 1855
Cultural Region
Place of Origin
Dimensions3.6 x 3.6 x 4.9 cm (1 7/16 x 1 7/16 x 1 15/16 in.)
Material
DescriptionThis is a telescope eyepiece by Secretan. It is threaded for insertion into a focuser. The end closest to the eye has both internal and external threads. A small-aperture, high power lens is screwed into the eyepiece.
Signedunsigned
Curatorial RemarksThis doesn't fit into the focuser for the Newtonian telescope by Secretan (1997-1-0303b). The threads are coarser.
Marc François Louis Secretan
Date: circa 1855
Object number: 2007-1-0179
Marc François Louis Secretan
Date: circa 1855
Object number: 1997-1-0303b
Marc François Louis Secretan
Date: circa 1855
Accessories: 1 Eyepiece; 1 objective; horizontal case.
Object number: 1247
Marc François Louis Secretan
Date: circa 1855
Object number: 1997-1-0303
Marc François Louis Secretan
Date: circa 1850
Object number: 5233
François-Antoine Jecker
Date: circa 1801
Accessories: 1 Objective, glass missing ; spring loaded holder for slides; no case.
Object number: 1228
Charles-Louis Chevalier
Date: circa 1840
Accessories: 2 regular objectives; a high power objective; a low power objective (a variable power dissecting lens) with an extension arm for this lens; 2 dissecting lenses; 1 objective with lieberkuhn; objective with polarizer; 2 regular eyepieces; 1 erecting eyepiece; 1 micrometer eyepiece; stage micrometer, stage bull's eye condenser on jointed arm; camera lucida; tweezers; 3 dissecting tools; pillar extension;
compressorium, 2 objective adaptive mounts (one with Chevalier threads, another with Oberhauser threads); 2 adaptors for Chevalier lenses to other microscopes (one adaptor having Society threads); case.
Object number: 1093
Jean Baptiste François Soleil
Date: 1840-1875
Object number: 1997-1-0851