Sir Patrick Moore's first surviving large telescope, nicknamed 'Oscar'. 12 1/2 inch reflecting telescope by H.N. Irving and Son, Teddington, London. Mirror by Wildey, London. Tripod not original. Bought c. 1948 and used at East Grinstead, Armagh and Surrey. Used for lunar observations, including those used by Moore to map libration zones. Acquired alongside the Archive of Sir Patrick Moore. 'Oscar', Sir Patrick Moore's first surviving large telescope