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
- Object Number:
- furnishing and equipment
- measuring device - instrument
- spectroscope - astronomical
- Hilger, Adam
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