Search Results - "Rengaswamy, Sridharan"

Measurement of Astronomical Seeing Using Long Exposure Solar Images by Rengaswamy, Sridharan, Ravindra, B., Prabhu, K.

“…We extend our modified parameter search method (Sridharan, Dashora, and Venkatakrishnan, Solar Phys. 222 , 35, 2004 ) of estimating the Fried parameter ( r 0 )…”
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Fizeau Mask Interferometry of Solar Features Using the Multi-application Solar Telescope at the Udaipur Solar Observatory by Raja Bayanna, A., Venkatakrishnan, P., Rengaswamy, Sridharan, Mathew, Shibu K.

“…Efforts are made to demonstrate high-resolution observations of the solar atmosphere using spatial interferometry. Covering the telescope pupil with a Fizeau…”
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Seeing Measurements with the Merak Hα Telescope by Unni. C, Vishnu, Rengaswamy, Sridharan, Ravindra, B., Prabhu, K.

“…The parameter-search method (PSM) established by Rengaswamy, Ravindra, and Prabhu ( Solar Phys. 294 , 5, 2019 ) for measuring the terrestrial atmospheric…”
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Image Quality Specification for Solar Telescopes by Subramanian, Saraswathi Kalyani, Rengaswamy, Sridharan

“…Modern large ground-based solar telescopes are invariably equipped with adaptive optics systems to enhance the high angular resolution imaging and…”
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Image Quality Specification for Solar Telescopes by Subramanian, Saraswathi Kalyani, Rengaswamy, Sridharan

“…Modern large ground-based solar telescopes are invariably equipped with adaptive optics systems to enhance the high angular resolution imaging and…”
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Discovery of an M-type Companion to the Herbig Ae Star V1787 Ori by Arun, R, Mathew, Blesson, Rengaswamy, Sridharan, Manoj, P, Narang, Mayank, Kartha, Sreeja S, Maheswar, G

“…The intermediate mass Herbig Ae star V1787 Ori is a member of the L1641 star-forming region in the Orion A molecular cloud. We report the detection of an…”
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Seeing Measurements with the Merak H$\upalpha$ Telescope by Unni. C, Vishnu, Rengaswamy, Sridharan, Ravindra, B., Prabhu, K.

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SolarAccel: FPGA accelerated 2D cross-correlation of digital images: Application to solar adaptive optics by Das, Soham, Rao, Nanditha, Phanindra, D. V. S., Rengaswamy, Sridharan

“…The cross-correlation of two-dimensional digital images is fundamental to solar adaptive optics computations. It can be used in a simple tip-tilt correction…”
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Discovery of an M-type companion to the Herbig Ae Star V1787 Ori by Arun, R, Mathew, Blesson, Rengaswamy, Sridharan, Manoj, P, Narang, Mayank, Kartha, Sreeja S, Maheshwar, G

“…ABSTRACT The intermediate-mass Herbig Ae star V1787 Ori is a member of the L1641 star-forming region in the Orion A molecular cloud. We report the detection of…”
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COMPLEX ORGANIC AND INORGANIC COMPOUNDS IN SHELLS OF LITHIUM-RICH K GIANT STARS by Reza, Ramiro de la, Drake, Natalia A., Oliveira, Isa, Rengaswamy, Sridharan

“…ABSTRACT Hydrocarbon organic material, as found in the interstellar medium, exists in complex mixtures of aromatic and aliphatic forms. It is considered to…”
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Complex Organic and Inorganic Compounds in Shells of Lithium-rich K Giant Stars by de la Reza, Ramiro, Drake, Natalia A, Oliveira, Isa, Rengaswamy, Sridharan

“…Hydrocarbon organic material, as found in the interstellar medium, exists in complex mixtures of aromatic and aliphatic forms. It is considered to be…”
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Measurement of isoplanatic angle and turbulence strength profile from H-alpha images of the Sun by Subramanian, Saraswathi Kalyani, Rengaswamy, Sridharan

“…Adaptive Optics (AO) systems have become integral for ground-based astronomy. Based on the scientific case, there are various flavours of AO systems. Measuring…”
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VLTI status update: a decade of operations and beyond by Merand, Antoine, Abuter, Roberto, Aller-Carpentier, Emmanuel, Andolfato, Luigi, Alonso, Jaime, Berger, Jean-Philippe, Blanchard, Guillaume, Boffin, Henri, Bourget, Pierre, Bristow, Paul, Cid, Claudia, de Wit, Willem-Jan, del Valle, Diego, Delplancke-Stroebele, Franccoise, Derie, Frederic, Faundez, Lorena, Ertel, Steve, Grellmann, Rebekka, Gitton, Philippe, Glindemann, Andreas, Guajardo, Patricia, Guieu, Sylvain, Guisard, Stephane, Guniat, Serge, Haguenauer, Pierre, Herrera, Christian, Hummel, Christian, La Fuente, Carlos, Lopez, Marcelo, Mardones, Pedro, Morel, Sebastien, Mueller, Andre, Percheron, Isabelle, Duc, Than Phan, Pino, Andres, Poupar, Sebastien, Pozna, Eszter, Ramirez, Andres, Rengaswamy, Sridharan, Rivas, Lionel, Rivinius, Thomas, Segovia, Alex, Schmid, Christian, Schoeller, Markus, Schuhler, Nicolas, Woillez, Julien, Wittkowski, Markus

“…We present the latest update of the European Southern Observatory's Very Large Telescope interferometer (VLTI). The operations of VLTI have greatly improved in…”
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The 2010 Interferometric Imaging Beauty Contest by Malbet, Fabien, Cotton, William, Duvert, Gilles, Lawson, Peter, Chiavassa, Andrea, Young, John, Baron, Fabien, Buscher, David, Rengaswamy, Sridharan, Kloppenborg, Brian, Vannier, Martin, Mugnier, Laurent

“…We present the results of the fourth Optical/IR Interferometry Imaging Beauty Contest. The contest consists of blind imaging of test data sets derived from…”
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The 2012 Interferometric Imaging Beauty Contest by Baron, Fabien, Cotton, William D, Lawson, Peter R, Ridgway, Steve T, Aarnio, Alicia, Monnier, John D, Hofmann, Karl-Heinz, Schertl, Dieter, Weigelt, Gerd, Thiébaut, Eric, Soulez, Férréol, Mary, David, Millour, Florentin, Vannier, Martin, Young, John, EliasII, Nicholas M, Schmitt, Henrique R, Rengaswamy, Sridharan

“…We present the results of the fifth Interferometric Imaging Beauty Contest. The contest consists in blind imaging of test data sets derived from model sources…”
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Status and new operation modes of the versatile VLT/NACO by Girard, Julien H. V, Kasper, Markus, Quanz, Sascha P, Kenworthy, Matthew A, Rengaswamy, Sridharan, Schödel, Rainer, Gallenne, Alexandre, Gillessen, Stefan, Huerta, Nicolas, Kervella, Pierre, Kornweibel, Nick, Lenzen, Rainer, Mérand, Antoine, Montagnier, Guillaume, O'Neal, Jared, Zins, Gérard, IOT, the NACO

“…Adaptive Optics Systems II, Proc. SPIE, Vol. 7736, 77362N (2010) This paper aims at giving an update on the most versatile adaptive optics fed instrument to…”
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Daytime turbulence strength profile measurement at Kodaikanal Observatory by Subramanian, Saraswathi Kalyani, Rengaswamy, Sridharan, Deshmukh, Prasanna Gajanan, Nair, Binukumar G, S, Mahesh Babu

“…The Indian Institute of Astrophysics (IIA) is developing a Multi-Conjugate Adaptive Optics (MCAO) system for the Kodaikanal Tower Telescope (KTT). In this…”
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Design and modeling of a tunable spatial heterodyne spectrometer for emission line studies by Kaipachery, Nirmal, Rengaswamy, Sridharan, Sriram, Sripadmanaban, Murthy, Jayant, Ambily, Suresh, Safonova, Margarita, Sreejith, Aickara Gopinathan, Mathew, Joice, Sarpotdar, Mayuresh

“…Spatial Heterodyne Spectroscopy (SHS) is a relatively novel interferometric technique similar to the Fourier transform spectroscopy with heritage from the…”
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Speckle Imaging with VLT/NACO No-AO Mode by Rengaswamy, Sridharan, Girard, Julien, de Wit, Willem-Jan, Boffin, Henri

“…The Messenger, vol. 155, p. 12-16, 2014 Long-exposure stellar images recorded with large ground-based telescopes are blurred due to the turbulent nature of the…”
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