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dc.contributor.authorSreekanth Reddy, V-
dc.contributor.authorBanyal, R. K-
dc.contributor.authorSridharan, R-
dc.contributor.authorKamath, P. U-
dc.contributor.authorAishwarya, S-
dc.identifier.citationResearch in Astronomy and Astrophysics, Vol. 20, No. 1, 12en_US
dc.descriptionRestricted Accessen_US
dc.description.abstractWe developed a tip-tilt system to compensate the turbulence induced image motion for the 1.3 m telescope at Vainu Bappu Observatory, at Kavalur. The instrument is designed to operate at the visible wavelength band (480 − 700 nm) with a field of view of 1' × 1'. The tilt corrected images have demonstrated up to ≈ 57% improvement in image resolution and a corresponding peak intensity increase by a factor of ≈ 2.8. A closed-loop correction bandwidth of ≈ 26 Hz has been achieved with on-sky tests and the root mean square motion of the star image has been reduced by a factor of ~ 14. These results are consistent with theoretical and numerical predictions of wave-front aberrations caused by atmospheric turbulence and image quality improvement expected from a real-time control system. In this paper, we present details of the instrument design, laboratory calibration studies and quantify its performance on the telescope.en_US
dc.publisherIOP Publishingen_US
dc.rights© IOP Publishing-
dc.subjectAdaptive opticsen_US
dc.subjectAtmospheric effectsen_US
dc.subjectHigh angular resolutionen_US
dc.titleDevelopment of image motion compensation system for 1.3m telescope at Vainu Bappu Observatoryen_US
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