Výsledky vyhledávání - "Chinnappan, V."

Report

Performance of the low light level CCD camera for speckle imaging

Autor: Saha, S. K., Chinnappan, V.

A new generation CCD detector called low light level CCD (L3CCD) that performs like an intensified CCD without incorporating a micro channel plate (MCP) for light amplification was procured and tested. A series of short exposure images with milliseco

Externí odkaz: http://arxiv.org/abs/astro-ph/0209423

Zobrazit plný text záznamu

Report

Speckle interferometric observations of close binary stars

Autor: Saha, S. K., Chinnappan, V., Yeswanth, L., Anbazhagan, P.

Speckle interferometric technique is employed to record a series of hundreds of short-exposure images of several close binary stars with sub-arcsecond separation through a narrow band filter at the Cassegrain focus of the 2.34 meter (m) Vainu Bappu t

Externí odkaz: http://arxiv.org/abs/astro-ph/0209424

Zobrazit plný text záznamu

Report

Development of a Speckle Interferometer and the Measurement of Fried's Parameter (r$_o$) at the Telescope Site

Autor: Saha, S. K., Sudheendra, G., Chandra, A. Umesh, Chinnappan, V.

Publikováno v: Exper.Astron. 9 (1999) 39-49

A new optical speckle interferometer for use at the 2.34 meter Vainu Bappu Telescope (VBT), at Vainu Bappu Observatory (VBO), Kavalur, India, has been designed and developed. Provisions have been made for observation both at the prime focus (f/3.25),

Externí odkaz: http://arxiv.org/abs/astro-ph/9910282

Zobrazit plný text záznamu

Report

Night time variation of Fried's parameter at VBT, Kavalur

Autor: Saha, S. K., Chinnappan, V.

Publikováno v: Bull. Astron. Soc. Ind. (1999), 27, 327 - 329

The night time variation of the Fried's parameter, r$_{o}$ is measured on 28-29 March 1991, at the Cassegrain focus of 2.34 m Vainu Bappu Telescope (VBT), at Vainu Bappu Observatory (VBO), Kavalur, India, using speckle interferometer; the results are

Externí odkaz: http://arxiv.org/abs/astro-ph/9910283

Zobrazit plný text záznamu