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Browsing by Author "Bhatnagar, A. K"

Browsing by Author "Bhatnagar, A. K"

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  • Determination of times of second and third contact from flash spectrum sequence 
    Bhatnagar, A. K (Indian Institute of Astrophysics, 1997)
    The predicted times of contact of a total solar eclipse have uncertainty of a few seconds due to (i) irregular profile of the lunar limb, (ii) difference between the geometrical and gravitational centres of the Moon's disc ...
  • Expedition to Mauritius for observing supernova 1987A 
    Babu, G. S. D; Bhatnagar, A. K; Narayanan, R. S (Astronomical Society of India, 1991)
    A two-member expedition to the island country of Mauritius was organized in February/March 1988 to observe the supernova 1987A photometrically. The only occasion when one complete set of observations of SN 1987A could be ...
  • Imaging polarimetry of comet Austin 
    Joshi, U. C; Chauhan, J. S; Deshpande, M. R; Sen, A. K; Bhatnagar, A. K (Astronomical Society of India, 1993)
    Comet Austin (1989c) was observed during April and May 1990 when its phase was between 106 deg and 110 deg. No unusual activity in the form of jet is seen in the polarization map. Polarization is low near the nucleus and ...

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