35-mm rolls
The NDA team inventoried the 35-mm films in 2016. The collection forms a total of 1492 individual rolls, 30.5 m-long in average, which represents approximately 45km of film. Each roll included several observing sequences spread across different days, typically between 3 and 5 8h-long observing sequences each.
These films are divided as follows :
Decameter Array : 878 rolls
682 rolls obtained with the ’S’ or ’Spectrograph’ receiver between 1978 and 1980 ;
154 rolls obtained with the ’R’ or ’Routine’ receiver between 1979 and 1989 ;
40 rolls obtained with the ’RN’ or ’Routine-New’ receiver between 1990 and 1991 ;
2 rolls obtained with the ’SAO’ or ’Spectro Acousto-Optique’ receiver in 1983.
- NDA cabinets
- LESIA, Obs. de Paris
- Original storage of NDA rolls
- Sigal, LESIA, Observatoire de Paris
- NDA receivers
- Sigal, LESIA, Observatoire de Paris
- Storage of NDA films
- Sigal, LESIA, Observatoire de Paris
Decameter Interferometer : 601 rolls
436 rolls obtained with the ’S’ or ’Spectrograph’ receiver ;
149 rolls obtained with the ’MCX’ or ’Multi-Channel’ receiver ;
16 test rolls (duplicated rolls, tests of instrumental modes using the above mentioned receivers etc.).
- Inventory of NDI rolls
- LESIA, Observatoire de Paris
- Collection of NDI rolls
- LESIA, Observatoire de Paris
- NDI S receiver
- Sigal, LESIA, Observatoire de Paris
- NDA MCX receiver
- Sigal, LESIA, Observatoire de Paris
Arecibo campaign : 13 rolls
13 rolls obtained with different receivers.
- Arecibo rolls
- LESIA, Observatoire de Paris
- A calibration sequence
- Sigal, LESIA, Observatoire de Paris
The films were stored in metallic boxes, some of which have been affected by rust. The RDN rolls were stored in three metal cabinets. The NDI and Arecibo rolls were stored in carton packaging or wood boxes.
Portfolio
