urn:nasa:pds:context:telescope:las_campanas.magellan_clay_6m5 1.0 1.16.0.0 Product_Context 2021-08-12 1.0 Created by A.C.Raugh from information downloaded from the Las Campanas Observatory web site on 2021-08-21. urn:nasa:pds:context:facility:observatory.las_campanas telescope_to_facility 6.5 2400 The Landon T. Clay telescope is one of a twin pair (with the Walter Baade) located on Cerro Manqui at Las Campanas Observatory. The primary mirror is an f/1.25 parabaloid with a honeycomb internal structure to reduce weight. The telescope optics include active controls, including correction of low-order aberrations by controlling the figure of the primary mirror.