THEMIS telescope information

Location: Observatorio del Teide, Tenerife Property: CNRS (Centre Nacional de la Recherche Scientifique) and CNR (Consiglio Nazionale delle Ricerche) Operated by: THEMIS S.L. First light:      1996 Latitude:    N  28� 18' 12.42" Longitude: W 16�  30 32.04" Elevation:   2429 m

Contact:
see the "contact us" link of this website

Description:
THEMIS is a joint operation from France (CNRS) and Italy (CNR) national research agencies. It is located at Izana , 2400 m, within the Teide Observatory from the Instituto de Astrofisica de Canarias, on the island of Tenerife (Canary islands, Spain).
THEMIS is a 90 cm solar telescope, currently the third larger in the world. Its specific design, allowing for high-accuracy spectropolarimetry of the solar surface, includes an alt-az mounting, an helium filled telescope tube, a Stokes polarimeter located at the prime focus, and a multi-mode spectrograph. Themis delivers routine vector polarimetry analysis with an accuracy ranging from 10-3 to 10-5 in some configurations. The spectrograph design allows the observation of up to 10 wavelengths simultaneously, giving an opportunity to perform 3D inversion of the magnetic fields structure in the solar atmosphere. Themis currently offers 3 complementary observing modes:
- MTR mode for multiline spectropolarimetry
- MSDP mode allowing for multichannel substractive double-pass spectro-imaging
- IPM mode for a very narrow-band imaging with a universal birefringent filter followed by a Fabry-Perot interferometer.

For further details, see http://www.themis.iac.es