One ten inch flint glass prism of angle 12 1/2 deg

Made:
1888-1889 in London
maker:
Adam Hilger

One ten inch flint glass prism of angle 12 1/2 degrees [mounted with Inv No. 1888-158 and shares the same case] with brass mountings and adjustments to minimum angle divation. Used with a 10-inch refracting telescope with equatorial mount by Cooke at the South Kensington Solar Physics Observatory and is now at the Norman Lockyer Observatory at Sidmouth, Devon

Details

Category:
Astronomy
Object Number:
1889-68
Materials:
brass, glass
type:
spectroscope - objective prism
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
  • spectroscope
  • spectroscope - astronomical
credit:
Hilger, Adam
status:
Permanent collection

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