LESIA Observatoire de Paris-PSL CNRS vopdc cdpp Sorbonne Université cnes Université de Paris

Nançay Decametric 35mm Film Observations Logs Collection V1.0

Friday 10 September 2021, by Baptiste Cecconi

This collection contains the observation logs of 35mm film decametric 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.

Link to data repository

Description

This collection contains raw decametric 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, provided in TIF and JPG format below. This digitization project was made possible through funding support from: Collex Gis-Persée (french ministry of culture), Observatoire de Paris (ESTERS group, scientific council), The radioastronomy station of Nançay and CNES.

Content

The collection is composed of 9943 digitised observation log sheets (PDF format), contains the observations conditions of the 35mm observations (L. Lamy et al, https://doi.org/10.25935/QRMQ-X194).

Product descriptions
Description Format Size
Observation Log PDF about 70 kB

Coverage and sampling

  • Time range: 1970 to 1990
  • Targets: Jupiter, the Sun

Acknowledgements

This project was made possible thanks to the support of the following partners:

Owing to the significant work invested by the NDA team in this project, any foreseeable use of these digitized data should be announced to contact.nda@obs-nancay.fr and accompanied by a citation of the collection :

  • Lamy, L., B. Cecconi, L. Debisschop et al. (2020), Nançay Decametric 35mm Film Observations Digitized Collection (Version 1.0) [Data set]. PADC. https://doi.org/10.25935/QRMQ-X194

Contact

Any question or request should be addressed to contact.maser@obspm.fr

References

  • Boischot, A. 1974. Radioastronomy on Decameter Wavelengths at Meudon and Nançay Observatories, Sol. Phys., 36(2), pp.517-522. doi:10.1007/BF00151218
  • Boischot, A., C. Rosolen, M.G. Aubier, G. Daigne, F. Leblanc, A. Lecacheux, J. de la Noë and B.M. Pedersen. 1980. A new High Gain, Broadband, Steerable Array to study Jovian Decametric Emission, Icarus, 43, 399-407. doi:10.1016/0019-1035(80)90185-2
  • Lamy, L., P. Zarka, B. Cecconi, L. Klein, S. Masson, L. Denis and A. Coffre 2017. 1977–2017: 40 years of decametric observations of Jupiter and the Sun with the Nançay Decameter Array, in Planetary Radio Emissions VIII, edited by G. Fischer et al., Austrian Academy of Sciences press, Vienna, 455–466. doi:10.1553/PRE8s455
  • Cecconi, B. L. Lamy, L. Denis, P. Zarka, C. Louis, A. Fave, M.-A. Dubos, P. Le Sidaner and V. Stoll 2018. Digitizing analogic spectrograms recorded by the Nançay Decameter Array on 35mm film rolls from 1970 to 1990, in Proceeding to the PV2018 conference - Adding value and preserving data, Rutherford Appleton Laboratory, Harwell Space Cluster (UK), 15th-17th May 2018. arxiv: 2003.12479
  • Lamy, L., B. Cecconi, L. Debisschop et al. (2020), Nançay Decametric 35mm Film Observations Digitized Collection (Version 1.0) [Data set]. PADC. https://doi.org/10.25935/QRMQ-X194