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Browsing by Subject "Atmospheric turbulence"

Browsing by Subject "Atmospheric turbulence"

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  • Astronomical site survey report on dust measurement, wind profile, optical turbulence, and their correlation with seeing over IAO-Hanle 
    Shantikumar, S. N; Kathiravan, S; Parihar, P. S; Larson, E. J. L; Sharika Mohanan; Angchuk, D; Jorphel, Sonam; Rangarajan, K. E; Prabhu, K (Springer Netherlands, 2017-04)
    The present work discusses astronomical site survey reports on dust content, vertical distribution of atmospheric turbulence, precipitable water vapor (PWV), surface and upper-air data, and their effects on seeing over the ...
  • Correction for the observed intensity distribution in solar corona 
    Abhyankar, K. D; Subrahmanyam, P. V (Astronomical Society of India, 1984-06)
    An estimation of the correction for the broadening of the intensity profile of the solar corona caused by atmospheric turbulence, scattering in the photographic emulsion, focusing errors etc, is made from the coronal ...
  • Day-time seeing observations at Kodaikanal Tower Telescope 
    Bagare, S. P (Astronomical Society of India, 1995)
    A limb monitor was fabricated and used for the observation of seeing conditions at the Solar tower telescope of Kodaikanal observatory. We describe the instrument and report the results obtained on image stability, ...
  • Development of a Lunar Scintillometer as part of the national large optical telescope site survey 
    Surendran, A; Parihar, P. S; Banyal, R. K; Anusha Kalyaan (Springer, 2018-03)
    Ground layer turbulence is a very important site characterization parameter used to assess the quality of an astronomical site. The Lunar Scintillometer is a simple and effective site-testing device for measuring the ...
  • Emerging trends of optical interferometry in astronomy 
    Saha, S. K (Astronomical Society of India, 1999)
    The current status of the high spatial resolution imaging interferometry in optical astronomy is reviewed in the light of theoretical explanation, as well as of experimental constraints that exist in the present day ...
  • Multilayered temporally evolving phase screens based on statistical interpolation 
    Roopashree, M. B; Vyas, A; Prasad, B. R (SPIE--The International Society for Optical Engineering, 2010-07)
    Simulation of the dynamic effects of atmospheric turbulence assists in understanding, testing and effective implementation of adaptive optics systems. Statistical interpolation technique helps in retaining the spatial ...
  • Seeing and microthermal measurements near Devasthal top 
    Stalin, C. S; Sagar, R; Pant, P; Mohan, V; Kumar, B; Joshi, Y. C; Yadav, R. K. S; Joshi, S; Chandra, R; Durgapal, A. K; Uddin, W (Astronomical Society of India, 2001)
    Results of the seeing measurements carried out near Devasthal top on 43 nights during March to April 1999 are presented. Open air seeing measurements were carried out with a differential image motion monitor (DIMM) using ...
  • Site characterization for the UPSO-TIFR telescope 
    Sagar, R; Uddin, W; Pandey, A. K; Stalin, C. S; Mohan, V; Sanwal, B. B; Gupta, S. K; Yadav, R. K. S; Durgapal, A. K; Joshi, S; Kumar, B; Gupta, A. C; Joshi, Y; Srivastava, J. B; Chaubey, U. S; Singh, M; Pant, P; Gupta, K. G; Padalia, T. D (Astronomical Society of India, 2000)
    The Uttar Pradesh State Observatory, Naini Tal and Tata Institute of Fundamental Research, Mumbai plan to install jointly a 3 metre size optical telescope at Devasthal located east of Naini Tal about 50 km by road. The ...
  • Wind speed measurement from Shack Hartmann Wavefront Sensor data: An experimental review of cross-correlation peak detection 
    Roopashree, M. B; Vyas, A; Prasad, B. R (ACEEE, USA, 2011)
    The mean velocity of the atmospheric wind is an important parameter in characterizing the turbulence above an astronomical telescope. Real-time wind velocity measurement is exceedingly essential to update the design metrics ...

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