Nançay Decametric 35mm Film Observations Digitized Collection

This collection contains raw decameter observations of Jupiter and the Sun performed daily in Nançay with the Nançay Decameter Array (NDA) from 1978 to 1991 and with the Nançay Decameter Inteferometer (NDI) from 1970 to 1977 (Boischot, 1974 ; Boischot et al., 1980). These observations were originally recorded on 35mm film rolls and facsimiles, presently archived at the Observatory of Paris in Meudon (Lamy et al., 2017, Cecconi et al., 2018). The 35mm collection is composed of about 1500 100ft-long film rolls (approaching a total length of 45 km). The films have been digitized at high resolution by OSIC, acting as a subcontractor of Observatoire de Paris. Each film roll thus yields several hundreds of individuals views.