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| technical:description [2025/03/24 17:21] – [(13) MTR2 spectrograph] etienne | technical:description [2025/04/29 11:35] (current) – etienne |
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| Simplified cartoon of the light-path within THEMIS identifying the main instrumental blocks. The spectrograph is not represented. \\ | Simplified cartoon of the light-path within THEMIS identifying the main instrumental blocks. The spectrograph is not represented. \\ |
| <html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=themis.png"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=themis.png" style="width:80%; height: auto;"></a></html> \\ | <html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:schema:themis.png"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:schema:themis.png" style="width:80%; height: auto;"></a></html> \\ |
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| ==== (14) Spectral cameras ==== | ==== (14) Spectral cameras ==== |
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| At the exit of the spectrograph, several cameras are placed so that to record simultaneously in different wavebands spectral images (lambda,y) . The spectrograms have a typical spectral range of 6-7 Å (0.6-0.7 nm) depending of the wavelength. The spatial direction has an extend of 1' when performing polarised observations, 2' otherwise. When performing polarimetric observations, two spectrograms are fitted on the camera field-of-view, each including the opposite polarimetric state (e.g. I+V and I-V Stokes). | At the exit of the spectrograph, several cameras are placed so that to record spectral images (lambda,y) simultaneously in different wavebands. The spectrographic images have a typical spectral range of 6-7 Å (0.6-0.7 nm) depending of the wavelength. The spatial direction has an extend of 1' when performing polarised observations, 2' otherwise. When performing polarimetric observations, two spectrographs are fitted on the camera field-of-view, each including the opposite polarimetric state (e.g. I+V and I-V Stokes). |
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| <html><font color="#0000ff"> The spectrographic images from the spectral cameras are the main data product of THEMIS MTR2 spectrograph observation mode. </font></html> [[observation:data#context camera| (cf. THEMIS data products)]] | <html><font color="#0000ff"> The spectrographic images from the spectral cameras are the main data product of THEMIS MTR2 spectrograph observation mode. </font></html> [[observation:data#context camera| (cf. THEMIS data products)]] |
