This series comprises publications of meteorological data and of catalogues of observations of the stars and planets obtained with the Carlsberg Automatic Meridian Circle (CAMC). The publications were produced by the Real Instituto y Observatorio de la Armada en San Fernando, Copenhagen University Observatory and Institute of Astronomy, Cambridge, and latterly, solely by ROA.

A series of booklets containing measurements of the meteorological conditions, astronomical seeing and atmospheric extinction made at the site of the Carlsberg Automatic Meridian Circle (CAMC) in the Observatorio del Roque de los Muchachos, La Palma, Islas Canarias.

A set of catalogues of observations of positions of stars and planets, obtained with the Carlsberg Automatic Meridian Circle on La Palma.

An incomplete series of ING Technical Notes.

20 volumes of typed or photocopied texts bound with green covers, with 14 duplicate copies. The following abbreviations are used in the titles: ISIS: Intermediate Dispersion Spectroscopic Imaging System; LDSS: Low Dispersion Survey Spectrograph; WHT: William Herschel Telescope; INT: Isaac Newton Telescope; MPF: Multi Purpose Fotometer; ADAM: Astronomical Data Acquisition Monitor; and CCD: Charge-coupled device.

Papers, records and photographs for the RGO La Palma Operations Division and the Roque de Los Muchachos Observatory. Includes paper files recording day to day administration, a large series of photographic records in albums, various sets of publications relating to telescopes and instruments and a small set of press cuttings.