New generation Multichannel Subtractive Double Pass for imaging spectropolarimetry – The S4I prototype
| Autor: | Pierre Mein, J.-P. Amans, F. Sayede, J. Moity |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Physics
Diffraction business.industry Instrumentation Astrophysics::Instrumentation and Methods for Astrophysics General Engineering Astronomy and Astrophysics Solar physics Solar telescope Wavelength Optics Space and Planetary Science Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics business Image resolution Spectrograph Long-slit spectroscopy |
| Zdroj: | EAS Publications Series. 55:385-388 |
| ISSN: | 1638-1963 1633-4760 |
| DOI: | 10.1051/eas/1255055 |
| Popis: | Imaging spectropolarimetry is a powerful tool in solar physics. Multichannel Subtractive Double Pass (MSDP) spectrographs can produce simultaneous 2D images in a number of wavelengths covering several line profiles with the following advantages: - Contrary to long slit spectroscopy, the spatial resolution can reach the diffraction limit. - Contrary to narrow band filters, full line profiles are recorded at the same time without any image motion and differential seeing effect. MSDP spectrographs use an entrance window instead of the usual long slit. A new generation MSDP using slicers made of mirrors instead of prisms is proposed for the future 4 m class European Solar Telescope. We describe the beam slicer prototype S4I (Spectral Sampling with Slicer for Solar Instrumentation) that will be tested soon at the 14 m spectrograph of the Meudon Solar Tower. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|