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Browsing Publications of Astronomical Society of India by Title

Browsing Publications of Astronomical Society of India by Title

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  • Imaging with insolated mirrors 
    Venkatakrishnan, P; Sridharan, R; Gupta, S. K (Astronomical Society of India, 2005-09)
    Modern solar telescope designs are different from the conven- tional concept of vacuum telescopes. These new designs are "open" telescopes which try to minimize the temperature difference between various parts of the ...
  • Imaging with the Scanning Sky Monitor on ASTROSAT 
    Bhattacharya, D; Shankar, B. T. R (Astronomical Society of India, 2002-09)
    This paper describes the status of the development of software for coded mask imaging with the Scanning Sky Monitor aboard the proposed Indian multi wavelength astronomy satellite ASTROSAT.
  • An implementation of transfer-pupil in a spectrograph on optical telescopes 
    Das, H. K; Kohok, A; Tandon, S. N (Astronomical Society of India, 2004-06)
    Based on the transfer pupil technique we develop a method to measure the lower order aberration coeffcients for optical telescopes; the method makes use of a Hartmann mask in a spectrograph for sampling the wavefront at ...
  • The importance of atmospheric monitoring in Cherenkov experiments 
    Osborne, J. L; Aye, M; Chadwick, P. M; Daniel, M. K; McComb, T. J. L; McKenny, J. M; Nolan, S. J; Orford, K. J; Rayner, S. M (Astronomical Society of India, 2002)
    A review is presented of Monte Carlo simulations of the effects of differing atmospheric structure and absorption models on the Imaging Atmospheric Cherenkov Telescope signal. Methods of monitoring the atmosphere are discussed.
  • The importance of multispectral band observations of gamma-ray bursts 
    Lazzati, D (Astronomical Society of India, 2002)
    Gamma-Ray Bursts are one of the best examples to show how mult iwavelength observations can help in our understanding of the universe. Gamma-Ray Bursts were a mystery for more than thirty years, during which they could be ...
  • An improved gnomon 
    Ratna, V (Astronomical Society of India, 1998)
    During a project work done by a group of students at senior secondary stage with the guidance of the author, the vertical pillar kind of gnomon has been improved upon. Whereas the traditional gnomon can measure altitude ...
  • An improved spectroscopic orbit for HD 75767 
    Griffin, R. F (Astronomical Society of India, 1991)
    HD 75767 is a sixth-magnitude solar-type star for which Sanford gave an orbit in 1931 on the basis of 37 low-dispersion Mount Wilson spectrograms. The orbit has a period of 10 days and was attributed a small eccentricity. ...
  • Improving the throughput of telescope by adaptive optics methods 
    Chinnappan, V; Saxena, A. K; Sreenivasan, A (Astronomical Society of India, 1998)
  • In pursuit of science 
    Varma, R. K (Astronomical Society of India, 1997)
  • Indian Astronomical Observatory - High Altitude Station for Optical-Infrared Astronomy 
    Anupama, G. C (Indian Institute of Astrophysics, Bangalore, 2000)
  • Indian Astronomical Observatory, Hanle 
    Prabhu, T. P (Astronomical Society of India, 2000)
    The high-altitude astronomical station of Indian Institute of Astrophysics at Mt. Saraswati, Hanle, will function as a full-fledged observatory with one 2-m and one 50-cm telescopes by the winter of 1999. The telescopes ...
  • The Indian Institute of Astrophysics 
    Sivaraman, K. R (Astronomical Society of India, 1973)
  • The Indian multi-wavelength astronomy satellite 
    Rao, A. R (Astronomical Society of India, 1999)
    The Indian X-ray Astronomy Experiment(IXAE) is currently in operation on-board the IRS-P3 satellite launched by the PSLV-D3 rocket in 1996 March 21. Based on IXAE observations, several interesting results have been obtained ...
  • The infall time-scale in the solar neighborhood 
    Basu, S (Astronomical Society of India, 1993)
    The Galactic disk is supposed to have been formed from gas condensing out from the halo. The rate at which this infall of gas occurs, the amount of infall, and the time scales over which gas falls on to the disc have ...
  • Influence of a third body on the luminosity of a contact binary system 
    Barman, S. K; Sagar, R (Astronomical Society of India, 1996)
  • The influence of chromospheric magnetism on oscillation frequencies 
    Roberts, B (Astronomical Society of India, 1996)
    The influence of chromospheric magnetism on p- and f-modes is examined. The magnetism is modelled as a horizontal canopy field, embedded in an isothermal atmosphere, overlying a field-free polytropic convection zone. Both ...
  • Influence of differential rotation on the wave propagation in a spherical MHD system with an application to sun 
    Maity, S; Paul, S. N; Bondyopadhaya, R (Astronomical Society of India, 1996)
    The dispersion relation for the MHD waves in a homogeneous medium having differential rotaion has been derived by using spherical polar coordinates. It is found that, for equatorial flow the instability of waves is influenced ...
  • Infrared and H-alpha emission from Be stars 
    Apparao, K. M. V; Tarafdar, S. P (Astronomical Society of India, 1997)
    It was noted earlier by several authors that the infrared excess Hα emission observed from Be stars are not compatible with the idea that both emissions occur from these same optically thin ionised region. We show here ...
  • Infrared and radio observations of IRAS 16571-4029 (RCW 116B). 
    Verma, R. P; Ghosh, S. K; Kulkarni, V. K; Ojha, D. K (Astronomical Society of India, 2003)
    Southern HII region RCW 116B (IRAS 16571-4029) has been mapped simultaneously at two far infrared wavelengths (at 150 and 210 μm) with a resolution of ~1 using the TIFR 1 m balloon-borne telescope. High angular resolution ...
  • Infrared and radio observations towards the ultracompact HII region IRAS 19111+1048. 
    Vig, S; Ghosh, S. K; Kulkarni, V. K; Ojha, D. K; Verma, R. P (Astronomical Society of India, 2003)
    Southern HII region RCW 116B (IRAS 16571-4029) has been mapped simultaneously at two far infrared wavelengths (at 150 and 210 μm) with a resolution of ~1 using the TIFR 1 m balloon-borne telescope. High angular resolution ...

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