Calibration of Spectropolarimetry package for Visible Emission Line Coronagraph (VELC) on board Aditya-L1 mission

Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/8376

Title:	Calibration of Spectropolarimetry package for Visible Emission Line Coronagraph (VELC) on board Aditya-L1 mission
Authors:	Venkata Suresh, Narra Hegde, Bhavana Dasamantarao, Utkarsha Somasundaram, P. K Kamath, P. U Prasad, B. R
Keywords:	Spectropolarimetry VELC Solar corona Aditya L1 Coronal magnetic fields Calibration
Issue Date:	Dec-2023
Publisher:	World Scientific Publishing Company
Citation:	Journal of Astronomical Instrumentation, Vol. 12, No. 4, 2350011
Abstract:	Visible Emission Line Coronagraph (VELC) is the prime payload on board Aditya-L1 mission. One of the unique capabilities of VELC is the coronal magnetic field measurements from space. To achieve this, VELC performs dual beam spectropolarimetric observations in coronal emission line centered at 10747Å. Spectropolarimetric channel of VELC consists of different polarimetric components such as quarter waveplate (QWP), polarising beam displacer (PBD) and half waveplate (HWP). Calibration of individual components is essential to ensure that they meet the performance requirements of the payload. This work discusses the details of the calibration tests carried out to evaluate the performance of different polarimetric components of VELC and the results obtained.
Description:	Restricted Access
URI:	http://hdl.handle.net/2248/8376
ISSN:	2251-1717
Appears in Collections:	IIAP Publications

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