Tor Vergata Synoptic Solar Telescope: Spectral characterization of potassium KI D1 MOFs
Date Issued
2020
Author(s)
Calchetti, Daniele
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Murphy, Neil
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Jefferies, Stuart M.
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DEL MORO, DARIO
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Berrilli, Francesco
Abstract
Synoptic telescopes are fundamental tools in Solar Physics and Space Weather. Their typical high cadence full-disk observations are pivotal to assess the physical conditions on the Sun and to forecast the evolution in time of those conditions. The TSST (Tor vergata Synoptic Solar Telescope) is a synoptic telescope composed of two main full-disk instruments: an H-alpha Daystar SR-127 telescope and a Magneto Optical Filter (MOF)-based telescope in the Potassium KI at 769.90 nm. The MOF consists in a glass cell containing a Potassium vapor where a longitudinal magnetic field is applied. The MOF-based channel produces full disk Line-of-Sight magnetic field and velocity maps of the solar photosphere at 300 km above the solar surface. In this work, we present the optical setup, the spectral characterization of the MOF-based telescope, and details on the spectral characterization of the MOFs cells which is a required test to obtain calibrated magnetograms and dopplergrams.
Coverage
Ground-based and Airborne Telescopes VIII
All editors
Marshall, Heather K.; Spyromilio, Jason; Usuda, Tomonori
Series
Volume
11445
Start page
37
Conferenece
Ground-based and Airborne Telescopes VIII
Conferenece place
Online Only, California, United States
Conferenece date
14-18 December, 2020
Issn Identifier
0277-786X
Rights
open.access
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Size
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Format
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