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| Titel |
Camtracker: a new camera controlled high precision solar tracker system for FTIR-spectrometers |
| VerfasserIn |
M. Gisi, F. Hase, S. Dohe, T. Blumenstock |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 4, no. 1 ; Nr. 4, no. 1 (2011-01-19), S.47-54 |
| Datensatznummer |
250001566
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| Publikation (Nr.) |
 copernicus.org/amt-4-47-2011.pdf |
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| Zusammenfassung |
| A new system to very precisely couple radiation of a moving source into a
Fourier Transform Infrared (FTIR) Spectrometer is presented. The Camtracker consists of a homemade
altazimuthal solar tracker, a digital camera and a homemade program to
process the camera data and to control the motion of the tracker. The key
idea is to evaluate the image of the radiation source on the entrance field
stop of the spectrometer. We prove that the system reaches tracking
accuracies of about 10 arc s for a ground-based solar absorption FTIR
spectrometer, which is significantly better than current solar trackers.
Moreover, due to the incorporation of a camera, the new system allows to
document residual pointing errors and to point onto the solar disk center
even in case of variable intensity distributions across the source due to
cirrus or haze. |
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