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| Titel |
Prototype Spectro-Polarimeter for the India's National Large Solar Telescope |
| VerfasserIn |
Komandur Elayavalli Rangarajan, Kasiviswanathan Sankarasubramanian, Nandita Srivastava, Parameswaran Venkatakrishnan, Shibu Mathew, Raja Bayanna, Sirajul Hasan, Kesavan Prabhu |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250078120
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| Zusammenfassung |
| India's National Large Solar Telescope (NLST) of two meter aperture
size is proposed to be set up in Ladakh region of Himalayas at a
height of around 4300 meters. A high resolution spectrograph along
with a polarimeter is planned as one of the backend instruments for
NLST. Prototype development of the NLST Spectro-Polarimeter (SP) is
proposed to be designed and developed for usage at the back focal
plane of the Multi-Application Solar Telescope (MAST) recently installed
at the Udaipur Solar Observatory.
Design of the prototype SP is discussed in detail along with the
scientific goals. The SP is designed to be operated in three
wavelengths to observe photospheric and chromospheric layers of the
solar atmosphere simultaneously. Vector magnetic fields will be
calculated in these layers. High resolution of the designed SP will
provide accurate estimates of velocities. Highly resolved polarized line
profiles will allow us to obtain the height variation of vector
magnetic fields when used along with suitable inversion codes (like
SPINOR or SIR). |
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