Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/7480
Title: Measurements of atmospheric turbulence parameters at Vainu Bappu Observatory using short-exposure CCD images
Authors: Sreekanth Reddy, V
Banyal, R. K
Sridharan, R
Aishwarya, S
Keywords: Atmospheric effects;Turbulence;Instrumentation: adaptive optics;catalogs;Methods: observational
Issue Date: May-2019
Publisher: IOP Publishing
Citation: Research in Astronomy and Astrophysics, Vol. 19, No. 5, 74
Abstract: We report atmospheric turbulence parameters, namely atmospheric seeing, tilt-anisoplanatic angle (θ 0) and coherence time (τ 0), measured under various sky conditions, at Vainu Bappu Observatory in Kavalur. Bursts of short exposure images of selected stars were recorded with a high-speed, frame-transfer CCD mounted on the Cassegrain focus of a newly commissioned 1.3 m telescope. The estimated median seeing is ≈ 1.85'' at wavelength of ~ 600 nm, the image motion correlation between different pairs of stars is ~ 44% for θ 0 ≈ 36'' and mean τ 0 is ≈ 2.4 ms. This work was motivated by the design considerations and expected performance of an adaptive optics system that is currently being planned for the telescope
Description: Restricted Access
URI: http://hdl.handle.net/2248/7480
ISSN: 1674-4527
???metadata.dc.rights???: © IOP Publishing
???metadata.dc.relation.uri???: https://doi.org/10.1088/1674-4527/19/5/74
Appears in Collections:IIAP Publications



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