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Browsing by Author "Das, H. K"

Browsing by Author "Das, H. K"

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  • 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 ...
  • IUCAA 2 meter telescope and its first light instrument IFOSC 
    Gupta, R; Burse, M; Das, H. K; Kohok, A; Ramaprakash, A. N; Engineer, S; Tandon, S. N (Astronomical Society of India, 2002-09)
    The various features of the IUCAA 2-meter telescope, its site parameters and considerations made for preserving the local seeing in terms of ventilation, thermal emissivity of the dome etc are described. The first ...
  • Near Infrared PICNIC Imager (NIPI) - A Progress Report 
    Deep, A; Ramaprakash, A. N; Tandon, S. N; Gupta, R; Burse, M. P; Chordia, P. A; Das, H. K; Engineer, S; Kohok, A. A; Mestry, V. B (Astronomical Society of India, 2003)
    In the ASI 2002 meeting we presented a preliminary design of Near Infrared PICNIC Imager (Deep et al, 2002). In this paper we will show the progress that has been made since then.
  • Near Infrared PICNIC Imager (NIPI) for IUCAA Telescope 
    Deep, A; Ramaprakash, A. N; Tandon, S. N; Gupta, R; Burse, M. P; Chordia, P. A; Das, H. K; Engineer, S; Kohok, A. A; Mestry, V. B (Astronomical Society of India, 2002-09)
    In this paper we present the current status of development of the Near Infrared PICNIC Imager (NIPI), which will be the first near-ffi instrument on IUCAA telescope. When used at one of the Cassegrain side ports of ...
  • Site characterisation for the IUCAA telescope 
    Das, H. K; Menon, S. M; Paranjpye, A; Tandon, S. N (Astronomical Society of India, 1999)
    We present the report on characterisation of the site for IUCAA telescope, which was conducted during October '96 to April '97. The main points highlighted are the results on : seeing, contribution of atmospheric turbulence ...

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