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  • Design of a Broad Band Antenna System (40 to 500 MHz) for the Spectral Observations of Solar Corona 
    Kishore, P (Indian Institute of Astrophysics, 2011-07)
  • Design of a Circularly Polarized Antenna System for Low Frequency Radio Astronomical Observations 
    Hariharan, K (Indian Institute of Astrophysics, 2012-07)
    The Indian Institute of Astrophysics operates three different radio telescopes at the Gauribidanur Radio Observatory. These instruments are: I) Radio Heliograph to obtain twodimensional images of the solar corona; ii) ...
  • Design of a mammary gland specific gamma imaging system (MSGIS) 
    Sarbajit, P; Bhattacharjee, T; Saha, S. K (Macmillan Publishers India Ltd., 2009)
    In conventional X-ray mammography, the presences of a small lesion/tumor at the early stage of cancer are not definitely detected because of the complex anatomy of the breast tissues. On the other hand, the low resolution ...
  • Design of an IR imaging channel for the Keck Observatory SCALES instrument 
    Banyal, R. K; Hasan, Armirul; Kupke, Reni; Varshney, Hari Mohan; Prakaesh, Ajin; Sivarani, T; Skemer, Andy J; MacDonald, Nick; Sallum, Steph; Deich, Will; Fitzgerald, Michael P; Govinda, K. V; Ratliff, Chris; Ramya, S; Stelter, Deno; Surya, Arun; Wang, Eric (SPIE-The International Society for Optical Engineering, 2022-08)
    A next-generation instrument named, Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy (SCALES), is being planned for the W. M. Keck Observatory. SCALES will have an integral field spectrograph (IFS) and a ...
  • Design of digital receivers for low frequency radio astronomy 
    Mugundhan, V (Indian Institute of Astrophysics, 2018-10)
    Low frequency radio observations of the solar corona provide valuable information on the heliocentric distance range ≈ 1.1R - 3R , which is relatively difficult to observe from other wavelengths. These observations are ...
  • Design of heliostat drive unit for the total solar eclipse expedition 24 October 1995 
    Kikani, P. K; Pathan, F. M (Astronomical Society of India, 1998)
  • Design of SCALES: a 2-5 micron coronagraphic integral field spectrograph for Keck Observatory 
    Skemer, Andrew J; Stelter, R. Deno; Sallum, Stephanie; MacDonald, Nicholas; Kupke, Renate; Ratliff, Christopher; Banyal, R. K; Hasan, Amirul; Varshney, Hari Mohan; Surya, Arun; Prakaesh, Ajin; Sivarani, T; Ramya, S; Govinda, K. V; Fitzgerald, Michael P; Wang, Eric; Kassis, Marc; Absil, Olivier; Alvarez, Carlos; Batalha, Natasha; Boucher, Marc-Andre; Bourgenot, Cyril; Brandt, Timothy; Briesemeister, Zackery; Kleer, Katherine de; Pater, Imke de; Deich, William; Divakar, Devika; Filion, Guillaume; Gauvin, Etienne; Gonzales, Michael; Greene, Thomas; Hinz, Philip; Jensen-Clem, Rebecca; Johnson, Christopher; Kain, Isabel; Kruglikov, Gabriel; Lach, Mackenzie; Landry, Jean-Thomas; Li, Jialin; Liu, Michael C; Lyke, James; Magnon, Kenneth; Marin, Eduardo; Martin, Emily; Martinez, Raquel; Mawet, Dimitri; Miles, Brittany; Sandford, Dale; Sheehan, Patrick; Sohn, Ji Man; Stone, Jordan (SPIE-The International Society for Optical Engineering, 2022-08)
    We present the design of SCALES (Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy) a new 2-5 micron coronagraphic integral field spectrograph under construction for Keck Observatory. SCALES enables ...
  • Design philosophy of TACTIC -- a high sensitivity VHE gamma-ray telescope 
    Bhat, C. L; Razdan, H; Koul, R; Sapru, M. L; Tickoo, A. K; Rannot, R. C; Kaul, R. K; Kaul, C. L (Astronomical Society of India, 1993)
    TACTIC is a high-sensitivity gound-based very high energy (VHE) telescope designed for undertaking comprehensive temporal and spectral studies of galactic and extragalactic gamma-ray sources. Its main design specifications, ...
  • Design, development, and validation of a segment support actuator for the prototype segmented mirror telescope 
    Deshmukh, P. G; Mandal, A; Parihar, P. S; Nayak, D; Mishra, Deepta Sundar (SPIE-The International Society for Optical Engineering, 2018-01)
    Segmented mirror telescopes (SMT) are built using several small hexagonal mirrors positioned and aligned by the three actuators and six edge sensors per segment to maintain the shape of the primary mirror. The actuators ...
  • Designing custom medium resolution observing modes to trace planet accretion with SCALES 
    Martinez, Raquel A; Sallum, Steph; Banyal, R. K; Batalha, Natalie; Batalha, Natasha; Blake, Geoff; Brandt, Tim; Briesemeister, Zack; Kleer, Katherine de; Pater, Imke de; Desai, Aditi; Eisner, Josh; Fong, Wen-fai; Greene, Tom; Honda, Mitsuhiko; Kain, Isabel; Kilpatrick, Charlie; Kupke, Renate; Lach, Mackenzie; Liu, Mike; Macintosh, Bruce; Mawet, Dimitri; Miles, Brittany; Morley, Caroline; Powell, Diana; Sheehan, Patrick; Skemer, Andrew J; Spilker, Justin; Stelter, Deno; Stone, Jordan; Surya, Arun; Sivarani, T; Wagner, Kevin; Zhou, Yifan (SPIE-The International Society for Optical Engineering, 2023-10)
    The Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy (SCALES) is an under-construction thermal infrared high-contrast integral field spectrograph that will be located at the W. M. Keck Observatory. SCALES ...
  • Detached cold dust shell around the early R star (warm carbon star) HD 100764 
    Parthasarathy, M (The European Southern Observatory, 1991-07)
    The existence of a dust shell and warm dust near HD 100764 are determined from IRAS observations of early R stars, and the ramifications of the findings are discussed. The mass of the dust shell is calculated to be 0.510 ...
  • Detached cold dust shells around yellow variable supergiants TW Aql, AI CMi, V 925 SCO and related stars 
    Parthasarathy, M; Reddy, B. E (Astronomical Society of India, 1993)
    TW Azl, AI CMi, V 924 Sco, ST Pup, AX Sgr, AD Aql, V1027 Cyg are yellow variable supergiants. We find these stars to be far-infrared (IRAS) sources with flux maximum around 25 micrometers. Analysis of the IRAS fluxes shows ...
  • A detailed analysis of barium oxide molecular lines in sunspot umbral spectra 
    Shanmugapriya, G; Karthikeyan, B; Balachandrakumar, K; Rajamanickam, N; Bagare, S. P (Springer, 2015-06)
    It is essential to know the composition of atoms or molecules present in the astrophysical objects concerned to determine the physical and chemical nature of a solar or stellar region. With the aim to identify them clearly, ...
  • Detailed analysis of the variable star population in the globular cluster NGC 7006 
    Arellano Ferro, A; Rojas Galindo, F. C; Bustos Fierro, I. H; Muneer, S; Yepez, M. A; Giridhar, S (Oxford University Press on behalf of Royal Astronomical Society, 2023-02)
    A 5-yr CCD photometric VI time series of NGC 7006 is employed to perform a detailed analysis of the known population of variable stars. In the process, we have corrected inconsistent classifications, sky coordinates and ...
  • A detailed census of variable stars in the globular cluster NGC 6333 (M9) from CCD differential photometry 
    Arellano Ferro, A; Bramich, D. M; Jaimes, R. F; Giridhar, S; Kains, N; Kuppuswamy, K; Jorgensen, U. G; Alsubai, K. A; Andersen, J. M; Bozza, V; Browne, P; Novati, S. C; Damerdji, Y; Diehl, C; Dominik, M; Dreizler, S; Elyiv, A; Giannini, E; Harpsoe, K; Hessman, F. V; Hinse, T. C; Hundertmark, M; Juncher, D; Kerins, E; Korhonen, H; Liebig, C; Mancini, L; Mathiasen, M; Penny, M. T; Rabus, M; Rahvar, S; Ricci, D; Scarpetta, G; Skottfelt, J; Snodgrass, C; Southworth, J; Surdej, J; Tregloan-Reed, J; Vilela, C; Wertz, O (Oxford University Press on behalf of the Royal Astronomical Society, 2013-09-11)
    We report CCD V and I time series photometry of the globular cluster NGC 6333 (M9). The technique of difference image analysis has been used, which enables photometric precision better than 0.05 mag for stars brighter than ...
  • A detailed study of the geomagnetic storm of 8-10 March 1970 
    Balakrishnan, T. K; Varadarajan, R; Singh, S. B; Karunakaran, D; Aleem, P. S. M (National Institute of Science Communication And Information Resources, 1973-03)
    A comprehensive study of the geomagnetic oscillations during the storm of 8 – 10 March 1970 is made using data obtained from equatorial stations. The oscillation characteristics during the three main phases of the storm ...
  • Details of the expedition to Iradatganj during total solar eclipse of October 24, 1995 
    Bandyopadhyay, A; Pandey, P; Narayan, A; Biswas, C; Neogy, S (Indian Institute of Astrophysics, Bangalore, 1997)
    Equipment: Celestron C-14 Schmidt Cassegrain Telescope (14" diameter), off-axis 6" solar filter, ST6 CCD camera, Off-axis polaroid filter 6" rotatable in steps of 60 degree.
  • Detecting exomoons around self-luminous giant exoplanets through polarization 
    Sengupta, S; Marley, M. S (IOP Publishing, 2016-06-20)
    Many of the directly imaged self-luminous gas-giant exoplanets have been found to have cloudy atmospheres. Scattering of the emergent thermal radiation from these planets by the dust grains in their atmospheres should ...
  • Detecting Outliers in SDSS using Convolutional Neural Network 
    Sharma, K; Kembhavi, Ajit; Kembhavi, Aniruddha; Sivarani, T; Abraham, S. (Societe Royale des Sciences de Liege, 2019-10)
    We propose an automated algorithm based on Convolutional Neural Network (CNN) for the detection of peculiar objects in large databases using their spectral observations. A convolutional neural network is a class of ...
  • Detection and tracking of IP disturbances using interplanetary scintillation 
    Balasubramanian, V; Srivatsan, R; Janardhan, P; Ananthakrishnan, S (Astronomical Society of India, 1998)
    A well known method of probing large portions of the interplanetary medium (IPM) is by observations of interplanetary scintillations of a large number of spatially well-distributed compact extragalactic radio sources at ...

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