Lens Components and Circular Components

PART OF:
Twin reflecting and refracting telescopes on observatory mounting, 1885
Made:
1885 in Dublin and York

4 lenses, 3 caps/coverings, 3 elements of tubing, 1 focal reducer, 2 circular elements, and a brass eyepiece for the "Twin Equatorial" Telescope, 1885

Details

Category:
Astronomy
Object Number:
1936-231/31
Materials:
metal (unknown), glass and brass (copper, zinc alloy)
Measurements:
overall (in crystal box): 103 mm x 283 mm x 165 mm,
type:
lens - component
credit:
Bower, W.L.N.

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