Four decades of advances from MSDP to S4I and SLED imaging spectrometers
The Multichannel Subtractive Double Pass (MSDP) is an imaging spectroscopy technique, which allows observations of spectral line profiles over a 2D field of view with high spatial and temporal resolution. It has been intensively used since 1977 on various spectrographs (Meudon, Pic du Midi, the Germ...
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| description | The Multichannel Subtractive Double Pass (MSDP) is an imaging spectroscopy technique, which allows observations of spectral line profiles over a 2D field of view with high spatial and temporal resolution. It has been intensively used since 1977 on various spectrographs (Meudon, Pic du Midi, the German Vacuum Tower Telescope, THEMIS, Wrocław). We summarize previous developments and describe the capabilities of a new design that has been developed at Meudon and that has higher spectral resolution and increased channel number: Spectral Sampling with Slicer for Solar Instrumentation (S4I), which can be combined with a new and fast polarimetry analysis. This new generation MSDP technique is well adapted to large telescopes. Also presented are the goals of a derived compact version of the instrument, the Solar Line Emission Dopplerometer (SLED), dedicated to dynamic studies of coronal loops observed in the forbidden iron lines, and prominences. It is designed for observing total solar eclipses, and for deployment on the Wrocław and Lomnicky peak coronagraphs respectively for prominence and coronal observations. |
| doi_str_mv | 10.48550/arxiv.2101.03918 |
| format | Article |
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| subjects | Coronagraphs Coronal loops Emission analysis Field of view Imaging spectrometers Line spectra Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics Polarimetry Prominences Sleds Solar eclipses Space telescopes Spectral resolution Spectrographs Temporal resolution |
| title | Four decades of advances from MSDP to S4I and SLED imaging spectrometers |
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