Rectangular echelle reflection grating (10 x 5 inches) on glass substrate (135 x 265 mm) with cardboard box

Made:
1964 in Rochester
maker:
Bausch and Lomb Inc

Rectangular echelle reflection grating (10 x 5 inches) on glass substrate (135 x 265 mm) with cardboard box, 300 lines per mm, and 63º 26' ' blaze angle. Made by Bausch & Lomb, Rochester, New York State, USA in 1964, Cat. No. 35-53-32-45. Used at the University Observatory, Oxford.

Details

Category:
Astronomy
Object Number:
2001-693
Materials:
glass, cardboard and complete
Measurements:
overall (case): 100 x 300 x 280 mm
type:
diffraction grating - echelon and diffraction grating - reflection
credit:
University of Oxford (Dept of Physics)