Measurements of seeing-induced crosstalk in tip–tilt corrected solar polarimetry

dc.contributor.author	Mathur, Harsh
dc.contributor.author	Nagaraju, K
dc.contributor.author	Pruthvi, Hemanth
dc.contributor.author	Sagayanathan, K
dc.date.accessioned	2024-06-21T08:13:58Z
dc.date.available	2024-06-21T08:13:58Z
dc.date.issued	2024-05-20
dc.identifier.citation	Applied Optics, Vol. 63, No. 15, pp. 4088-4094	en_US
dc.identifier.issn	1559-128X
dc.identifier.uri	http://hdl.handle.net/2248/8486
dc.description	Restricted Access	en_US
dc.description.abstract	We present measurements of seeing-induced crosstalk using spectropolarimetric observations of sunspots recorded simultaneously in the H α and Ca II 8662 Å lines with the Kodaikanal Tower Tunnel (KTT) telescope. The Kodaikanal Tower Tunnel telescope is integrated and installed with an image stabilization system consisting of a tip–tilt and an autoguider system. Additionally, the spectropolarimeter at KTT is upgraded to allow for the simultaneous recording of spectropolarimetric observations in three spectral lines. The tip–tilt system is shown to have a cutoff frequency of 80 Hz, effectively reducing the seeing induced crosstalk in the measured Stokes parameters by at least a factor of 2.	en_US
dc.language.iso	en	en_US
dc.publisher	Optica Publishing Group	en_US
dc.relation.uri	https://doi.org/10.1364/AO.519245
dc.rights	© 2024 Optica Publishing Group
dc.title	Measurements of seeing-induced crosstalk in tip–tilt corrected solar polarimetry	en_US
dc.type	Article	en_US