Spectroscope with camera in aluminium and brass, signed by Hammersley, Islington, London and by W. Ottway and Co., Orion Works, Ealing, with wooden case. Listed as instrument no.23 at the Solar Physics Observatory, South Kensington before being acquired by the Norman Lockyer Observatory, Sidmouth Devon.
Case for spectroscope in aluminium and brass signed by Hammersley, Islington, London and by W. Ottway and Co., Orion Works, Ealing, Solar Physics Observatory instrument no.23, acquired from Norman Lockyer Observatory
Spectroscope, in aluminium and brass with camera and extra collimator lens, signed by Hammersley, Islington, London and by W. Ottway and Co., Orion Works, Ealing. Listed as instrument no.23 at the Solar Physics Observatory, South Kensington before being acquired by the Norman Lockyer Observatory, Sidmouth Devon.
Accessories for Spectroscope by Hammersley, Islington, London and by W. Ottway and Co., Orion Works, Ealing, consisting of spark comparator apparatus, focus plate for camera and plane glass plate.
