Preprints
https://doi.org/10.5194/egusphere-2022-416
https://doi.org/10.5194/egusphere-2022-416
 
08 Jul 2022
08 Jul 2022
Status: this preprint is open for discussion.

Spectral Observations at the CILBO Observatory: Calibration and Data Sets

Joe Zender1, Detlef Koschny1,6, Regina Rudawska2, Salvatore Vicinanza3, Stefan Loehle4, Martin Eberhardt4, Arne Meindl4, Hans Smit1, Lionel Marraffa1, Rico Landman5, and Daphne Stam3 Joe Zender et al.
  • 1European Space Research and Technology Centre (ESA ESTEC), 2200 AG Noordwijk, The Netherlands
  • 2RHEA group/ESA ESTEC, 2200 AG Noordwijk, The Netherlands
  • 3Faculty of Aerospace Engineering, Delft University of Technology, Delft, The Netherlands
  • 4IRS, University of Stuttgart, Germany
  • 5Leiden Observatory, Leiden University, Postbus 9513, 2300 RA, Leiden, The Netherlands
  • 6Chair of Astronautics, TU Munich, 85748 Garching, Germany

Abstract. The Canary Island Long-Baseline Observatory (CILBO) is a double station meteor camera setup located on the Canary Islands and operated by ESA’s Meteor Research Group since 2010. Observations of meteors are obtained in the visual wavelength band by intensified video cameras from both stations, supplemented by an intensified video camera mounted with a spectral grating at one of the locations. The cameras observe during cloudless and precipitation-free nights and data are transferred to a main computer located at ESA/ESTEC once a day. The image frames that contain spectral information are calibrated, corrected, and finally processed into line intensity profiles. An ablation simulation, based on Bayesian statistics using a Markov-Chain Monte-Carlo method, allows to determine a parameter space, including the ablation temperatures, chemical elements and their corresponding line intensities, to fit against the line intensity profiles of the observed meteor spectra. The algorithm is presented in this paper and one example is discussed. Several hundred spectra have been processed and made available through the Guest Archive Facility of the Planetary Science Archive of ESA. The data format and meta-data are explained.

Joe Zender et al.

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Joe Zender et al.

Joe Zender et al.

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Short summary
The manuscript describes the ground-based camera equipment to obtain images from the dust ablation phenomena (meteors) in the Earth atmosphere. The meteors are observed from two locations , but one station is equipped with a camera containing a spectral grating which allows to follow and determine the spectral information through the meteor ablation process. We describe the data merging, calibration, and processing to finally derive to the meteor composition.