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Browsing Archival Collections by Title

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  • Indian Institute of Astrophysics. Report for the year 1975 April 1 to 1976 March 31 
    Bappu, M. K. V (Royal Astronomical Society, 1977-09)
  • Indian Institute of Astrophysics: Facilities 
    Prabhu, T. P; Kochhar, R. K (Indian Institute of Astrophysics, 1987)
  • Indications of twist in the Epsilon rings of Uranus 
    Vasundhara, R; Bhattacharyya, J. C (Centre national D Etudes Spatiales, 1982)
    The possibility of the Uranus epsilon ring having a structure consisting of a twisted bundle of narrow lanes of condensed material similar to that of Saturn's F ring was examined by cross correlation of a pair of light ...
  • The influence of superflares on the Hα striation pattern 
    Bappu, M. K. V; Bhatnagar, A; Punetha, L. M (Taylor and Francis, 1962-10)
  • Infrared Photometer system for Astronomical Observations 
    Shivanandan, K; Scaria, K. K; Nair, R. M; Rajamohan, R; Sivaraman, K. R (Indian Institute of Astrophysics, Bangalore, 1987)
    An infrared photometer system has been developed for photometry of astronomical sources in the spectral band 1 to 5 microns. The characteristics of the system and preliminary engineering tests using the 1- m optical ...
  • Infrared Solar Radiation Measurement during Total Solar Eclipse 
    Jain, S. L; Arya, B. C; Singh, S. K; Tripathi, O. P; Hamid, A (Indian Institute of Astrophysics, Bangalore, 1997)
    The occurrence of Total Solar Eclipse on October 24, 1995 provided an unique opportunity to conduct some experiments using IR sun photometers in the spectral range 0.75 micrometer to 1.6 micrometer and 205 to 14.5 micrometer ...
  • Integral Operator Technique of Line Transfer 
    Peraiah, A (Indian Institute of Astrophysics, Bangalore, 1986-05)
    We present details of a new technique of obtaining a numerical solution of the radiative transfer equation in spherical symmetry in a polychromatic system. We employed the integral operators together with an interpolation ...
  • Intensified CCD Camera Based Remote Guiding Unit for VBT and Observation of Speckles with ICCD 
    Chinnappan, V; Saha, S. K; Faseehana (Indian Institute of Astrophysics, Bangalore, 1991)
    For successful observations in any telescope, guiding becomes important. On 2.34 m Telescope at Vainu Bappu Observatory, Kavalur, a remote guiding system is assembled using Intensified CCD camera and a PC based image ...
  • Intensity Fluctuation in the Solar Chromosphere 
    Sivaraman, K. R; Venkitachalam, P. P (Indian Institute of Astrophysics, Bangalore, 1977)
    High resoulution spectrograms of the Balmer lines obtained at five positions from the centres to the limb have been used to study the r. m. s. intensity fluctuations and their dependence on the heliocentric angle. The ...
  • Intensity fluctuation of shadow bands during total solar eclipse of October 24, 1995 
    Shelke, R. N; Ingole, V. T (Indian Institute of Astrophysics, 1997)
    Intensity fluctuations of shadow bands during total solar eclipse of October 24, 1995 were recorded on magnetic tape using cross - shaped array of sixteen photo detectors at Nim Ka Thana. The plane of the array was placed ...
  • Intensity Fluctuations in the H-alpha line caused by Chromospheric mottling 
    Bappu, M. K. V (IETE, 1964)
    Spectra of the H-alpha line obtained with high dispersion and high spatial resolution are used to study some of the characteristics of chromospheric mottling on the solar disk. The fluctuations in intensity, indicated by ...
  • Interference filter photometry of weak emission lines in CQ Cephei 
    Bappu, M. K. V; Sinvhal, S. D (Taylor and Francis, 1959-08)
  • The Intermediate Polar PQ GEM -- Status of Wet Observations of 1996 
    Marar, T. M. K; Seetha, S; Ashoka, B. N; Kasturirangan, K; Mahra, H. S; Bhattacharyya, J. C; Leibowitz, E. M; Hemar, S; Mendelson, H; Ibbetson, P. A; O'Donoghue, D; Buckley, D. A. H; Breger, M; Handler, G; Sperl, M; Serkowitsch, E; Moskalik, P; Zola, S; Pajdosz, G; Krzesinski, J; Silvotti, R; Vauclair, G; Dolez, N; Solheim, J. E; Pfeiffer, B; Kepler, S. O; Kanaan, A; Provencal, J; Kawaler, S. D; O'Brien, M. S; Nather, R. E; Winget, D. E; Kleinman, S; Nitta, A; Bradley, P. A; Guzik, J. A; Clemens, C; Sullivan, D. J; Jiang, X (Baltic Astronomy, 1998-03)
    A summary of the results on PQ Gem based on WET observations conducted in February 1996 is presented. The 13.9 min spin period of the white dwarf in the system and the orbital side-band at 14.5 min have been detected ...
  • Interplanetary Scintillation 
    Alurkar, S. K (Indian Institute of Astrophysics, Bangalore, 1988)
    In this tutorial talk, the ground-based, inexpensive method of interplanetary scintillation (IPS) is described, starting with a general background of scattering of e.m. radiation in turbulent media. This is followed by the ...
  • Introduction to Supernova Phenomena 
    Krishan, V (Indian Institute of Astrophysics, 1988)
  • An investigation of the displacement of unsymmetrical lines under different conditions of the electric agc 
    Royds, T (Indian Institute of Astrophysics, Bangalore, 1914-08-06)
  • Ionospheric electron content and equivalent slab thickness in the equatorial region 
    Das Gupta, A; Basu, S; Bhar, J. N; Bhattacharyya, J. C (American Geophysical Union, 1975-02)
    The ionospheric total electron content and equivalent slab thickness in the equatorial region around 75° E have been studied. It is found that the slab thickness exhibits a strong latitudinal dependence with a maximum at ...
  • Ionospheric Indication of Short-time Solar Activity Variations 
    Bhattacharyya, J. C; Sunder, R. S (PID [Publications and Information Directorate], 1970)
    A series of Lyot filtergrams have been photometrically analysed and the variations in the plage intensity determined on a number of days. From simultaneous ionosonde records, correlation has been sought between the electron ...
  • Is Venus cloud covered? 
    Evershed, John (Royal Astronomical Society, 1919)
  • Isodensitometry of Omega Centauri and 47 Tucanae 
    Scaria, K. K (Indian Institute of Astrophysics, Bangalore, 1980)
    We present details of procedure on equidensitometry of globular clusters using the Sabattier technique in photography. Equidensitometry of Omega Centauri and 47 Tuc shows that both clusters become more elliptical beyond r ...

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