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  • An Image Auto Guider System for Kodaikanal Tower Tunnel Telescope 
    Mathur, Harsh; Thulasidharen, K. C; Hemanth, P; Nagaraju, K; Rajalingam, M (World Scientific Publishing, 2023-02)
    The Kodaikanal Tower Tunnel Telescope (KTT) is a three-mirror Coelostat-based Solar telescope. An inherent variable image drift is present in the KTT which is detrimental to observations particularly to slit-based spectroscopic ...
  • Image data acquisition system for large-format CCDs 
    Ananth, A. V; Srinivasan, R; Srinivasulu, G (SPIE, 1994-06)
    This paper describes the operation and performance of an IBM- PC/AT based image data acquisition system for large format CCDs. The system currently under development can handle image data from CCDs with pixel organization ...
  • Image processing facilities at Vainu Bappu observatory 
    Giridhar, S; Bhattacharyya, J. C; Kutty, K. N (Tata Institute of Fundamental Research, 1988)
    Need for application of Image processing techniques in astronomical studies in optical wavelengths and special advantages accruing thereby are discussed. The paper describes various image processing facilities that are ...
  • Image processing for stellar objects 
    Arun Surya (Indian Institute of Astrophysics, 2010-07)
  • Image Quality Specification for Solar Telescopes 
    Saraswathi Kalyani, S; Sridharan, R (Springer, 2023-01)
    Modern large ground-based solar telescopes are invariably equipped with adaptive optics systems to enhance the high angular resolution imaging and spectroscopic capabilities in the presence of Earth's atmospheric turbulence. ...
  • Image Reconstruction for a Continuously Rotating Coded Mask Camera 
    Shankar, B. T. R; Bhattacharya, D (Astronomical Society of India, 2003)
    We discuss a method for reconstructing the image for Scanning Sky Monitor which is a continuously rotating X-ray coded mask camera aboard the Indian astronomical satellite, ASTROSAT.
  • Image Reconstruction Methods in Radio Astronomy 
    Subramanya, C. R (Astronomical Society of India, 1980-03)
    An observation of a celestial source generally results in data which are insufficient for a unique reconstruction of the desired brightness profiles of the source. Two typical situations are considered here which pertain ...
  • Image Retrieval in Astronomical Interferometers Affected by Atmospheric Turbulence 
    Arun Surya (Indian Institute of Astrophysics, 2015-06)
    Single aperture speckle interferometry (Labeyrie, 1970) is a method that de- ciphers diffraction limited spatial Fourier spectrum and image features of stellar objects by counteracting blurring effect caused by the ...
  • An image slicer for the VBT high resolution echelle spectrometer 
    Anantha, Ch (Indian Institute of Astrophysics, 2010-07)
  • Imaging and spectral observations of a type-II radio burst revealing the section of the CME-Driven shock that accelerates electrons 
    Majumdar, Satabdwa; Tadepalli, Srikar Paavan; Maity, Samriddhi Sankar; Deshpande, Ketaki; Anshu Kumari; Ritesh Patel; Gopalswamy, Nat (Springer, 2021-04)
    We report on a multi-wavelength analysis of the 26 January 2014 solar eruption involving a coronal mass ejection (CME) and a Type-II radio burst, performed by combining data from various space and ground-based instruments. ...
  • Imaging and Spectral Studies of Solar Type I Noise Storms at Metric Wavelengths 
    Shanmugha Sundaram, G. A (Indian Institute of Astrophysics, Bangalore, 2004-02)
  • Imaging Fabry-Perot observations of green coronal line during the total solar eclipse of 21 June 2001 
    Chandrasekhar, T; Ashok, N. M; Anandarao, B. G (Astronomical Society of India, 2002-09)
    A Fabry-Perot interferometric experiment on the Green Coronal line was successfully performed during the total solar eclipse of 21 June 2001 from Lusaka, Zambia. Use of a cooled CCD camera permitted 17 separate exposures ...
  • Imaging Fabry-Perot spectroscopic observations on the planetary nebula NGC 1514 
    Muthumariappan, C; Anandarao, B. G; Banerjee, D. P. K (Astronomical Society of India, 1996)
  • 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 ...
  • Imaging studies in the near infrared region 
    Anandarao, B. G (Astronomical Society of India, 1993)
    The advent of array detectors has given a tremendous boost to the detection capabilities in the near infrared region over the last 5 years. A variety of instrumentation has been and is being built around these panoramic ...
  • 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 Mauritius Radio Telescope Challenges and Results 
    Udaya Shankar, N; Golap, K; Sachdev, S; Dodson, R; Katwaroo, M; Sastry, Ch. V (Springer, 2002)
    The Mauritius Radio Telescope (MRT) has been built with the main objective of surveying the southern sky at meter wavelengths. MRT is a Fourier synthesis, T-shaped non-coplanar array. It consists of a2048 m long East-West ...
  • 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.
  • IMF polarity effects on the equatorial ionospheric F-region 
    Sastri, J. H (1985)
    An exploratory study is made of the influence, during the equinoxes, of the interplanetary magnetic field (IMF) sector structure on the ionospheric F-region using ionosonde data from several equatorial stations for a 3-yr ...
  • Impact of Aerosol and Cloud on the Solar Energy Potential over the Central Gangetic Himalayan Region 
    Dumka, Umesh Chandra; Kosmopoulos, Panagiotis G; Shantikumar, N. S (Multidisciplinary Digital Publishing Institute, 2021-08)
    We examine the impact of atmospheric aerosols and clouds on the surface solar radiation and solar energy at Nainital, a high-altitude remote location in the central Gangetic Himalayan region (CGHR). For this purpose, we ...

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