Novel space coronagraphs: METIS, a flexible optical design for multi-wavelength imaging and spectroscopy

Silvano Fineschi; Ester Antonucci; Marco Romoli; Alessandro Bemporad; Gerardo Capobianco; Giuseppe Crescenzio; Gianalfredo Nicolini; Giuseppe Massone; Daniele Telloni; Maurizio Focardi; Fedrico Landini; Maurizio Pancrazzi; Luca Poletto; Maria-G. Pelizzo; Vania Da Deppo; J. Dan Moses; Vincenzo Andretta; Giampiero Naletto; Piergiorgio Nicolosi; Daniele Spadaro; Arkadiusz Berlicki; Michela Uslenghi; Marco Malvezzi; Luca Teriaca; L. Abbo; Enrico Magli

doi:10.1117/12.2028544

7 October 2013 Novel space coronagraphs: METIS, a flexible optical design for multi-wavelength imaging and spectroscopy

Silvano Fineschi, Ester Antonucci, Marco Romoli, Alessandro Bemporad, Gerardo Capobianco, Giuseppe Crescenzio, Gianalfredo Nicolini, Giuseppe Massone, Daniele Telloni, Maurizio Focardi, Fedrico Landini, Maurizio Pancrazzi, Luca Poletto, Maria-G. Pelizzo, Vania Da Deppo, J. Dan Moses, Vincenzo Andretta, Giampiero Naletto, Piergiorgio Nicolosi, Daniele Spadaro, Arkadiusz Berlicki, Michela Uslenghi, Marco Malvezzi, Luca Teriaca, L. Abbo, Enrico Magli

Author Affiliations +

Proceedings Volume 8862, Solar Physics and Space Weather Instrumentation V; 88620G (2013) https://doi.org/10.1117/12.2028544
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

This presentation outlines a general optical design for coronagraphs working in both the visible-light (VL) and UV/EUV wavelength ranges by combining the use of reflective, multilayer-coated or interference-coated optics with Lyot stops. This design has been successfully applied to a sub-orbital coronagraph. Another version of this novel design for visiblelight/ EUV coronagraphs uses an inverted-occultation design in order to minimize the solar flux entering the instrument. This design has been used for the coronagraph – METIS - on board the ESA Solar Orbital mission. The current optical configuration of METIS adopted for the Solar Orbiter mission includes Visible-light and UV imaging. However, the innovative inverted-occultation concept is flexible enough that it can also accommodate a EUV spectrograph maintaining the same basic optical layout. The paper also describes the potential capabilities of the inverted-occulter coronagraph as a VL/UV imager and EUV spectrograph for future solar missions.

Citation Download Citation

Silvano Fineschi, Ester Antonucci, Marco Romoli, Alessandro Bemporad, Gerardo Capobianco, Giuseppe Crescenzio, Gianalfredo Nicolini, Giuseppe Massone, Daniele Telloni, Maurizio Focardi, Fedrico Landini, Maurizio Pancrazzi, Luca Poletto, Maria-G. Pelizzo, Vania Da Deppo, J. Dan Moses, Vincenzo Andretta, Giampiero Naletto, Piergiorgio Nicolosi, Daniele Spadaro, Arkadiusz Berlicki, Michela Uslenghi, Marco Malvezzi, Luca Teriaca, L. Abbo, and Enrico Magli "Novel space coronagraphs: METIS, a flexible optical design for multi-wavelength imaging and spectroscopy", Proc. SPIE 8862, Solar Physics and Space Weather Instrumentation V, 88620G (7 October 2013); https://doi.org/10.1117/12.2028544

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