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Browsing by Author "Nathan, J. S"

Browsing by Author "Nathan, J. S"

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  • CCD photometry in VRI bands of the galactic cluster NGC 2818 
    Surendiranath, R; Kameswara Rao, N; Sagar, R; Nathan, J. S; Ghosh, K. K (Indian Academy of Sciences, 1990-06)
    The open cluster NGC 2818 containing a planetary nebula has been observed in VRI bands using the CCD system at prime focus of the 2.3 meter Vainu Bappu Telescope. The study extending to stars V of 21 magnitude established ...
  • Narrow band photometry of Comet Halley in the emission bands and the continuum 
    Babu, G. S. D; Nathan, J. S; Rajamohan, R; Sivaraman, K. R (Astronomical Society of Indian, 1989-09)
    IHW filter photometry of Comet Halley was carried out on seven nights during pre-perihelion period and on six nights during post-perihelion period, using the 40-cm telescope at the Vainu Bappu Observatory, Kavalur, as a ...

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