Search Results - "Bharmal, N. A"

Overview of observations from the RADAGAST experiment in Niamey, Niger: 2. Radiative fluxes and divergences by Slingo, A., White, H. E., Bharmal, N. A., Robinson, G. J.

“…Broadband shortwave and longwave radiative fluxes observed both at the surface and from space during the Radiative Atmospheric Divergence using ARM Mobile…”
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Overview of observations from the RADAGAST experiment in Niamey, Niger: Meteorology and thermodynamic variables by Slingo, A., Bharmal, N. A., Robinson, G. J., Settle, J. J., Allan, R. P., White, H. E., Lamb, P. J., Lélé, M. Issa, Turner, D. D., McFarlane, S., Kassianov, E., Barnard, J., Flynn, C., Miller, M.

“…An overview is presented of the meteorological and thermodynamic data obtained during the Radiative Atmospheric Divergence using Atmospheric Radiation…”
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Simulation of surface and top of atmosphere thermal fluxes and radiances from the radiative atmospheric divergence using the ARM Mobile Facility, GERB data, and AMMA Stations experiment by Bharmal, N. A., Slingo, A., Robinson, G. J., Settle, J. J.

“…Simultaneous observations of thermal radiative fluxes and radiances from the surface (Atmospheric Radiation Measurement Mobile Facility, Niamey) and top of…”
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Sampling uncertainties in surface radiation budget calculations in RADAGAST by Settle, J. J., Bharmal, N. A., Robinson, G. J., Slingo, A.

“…In the Radiative Atmospheric Divergence Using ARM Mobile Facility GERB and AMMA Stations (RADAGAST) project we calculate the divergence of radiative flux…”
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PEPITO: atmospheric Profiling from short-Exposure focal Plane Images in seeing-limiTed mOde by Beltramo-Martin, O, Bharmal, N A, Correia, C M

“…Atmospheric profiling is a requirement for controlling wide-field adaptive optics (AO) instruments, analysing the AO performance with respect to the observing…”
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Near-focus high-sensitivity wavefront sensing by Bharmal, N. A., Buscher, D. F., Haniff, C. A.

“…A new method of wavefront sensing that uses a pair of equally defocused images to derive the wavefront aberrations is presented. Unlike in conventional…”
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A tomographic algorithm to determine tip-tilt information from laser guide stars by Reeves, A. P., Morris, T. J., Myers, R. M., Bharmal, N. A., Osborn, J.

“…Laser Guide Stars (LGS) have greatly increased the sky-coverage of Adaptive Optics (AO) systems. Due to the up-link turbulence experienced by LGSs, a Natural…”
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Monte Carlo simulation of ELT-scale multi-object adaptive optics deformable mirror requirements and tolerances by Basden, A. G., Bharmal, N. A., Myers, R. M., Morris, S. L., Morris, T. J.

“…Multi-object adaptive optics (MOAO) has been demonstrated by the CANARY instrument on the William Herschel Telescope. However, for proposed MOAO systems on the…”
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Comparison of VLF sferics intensities at Halley, Antarctica, with tropical lightning and temperature by Watkins, N. W., Bharmal, N. A., Clilverd, M. A., Smith, A. J.

“…We compare measurements for 1998 of VLF sferics‐generated noise power at Halley, Antarctica, with the predictions of the long wave noise prediction (LNP) noise…”
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Lightning atmospherics count rates observed at Halley, Antarctica by Watkins, N.W, Clilverd, M.A, Smith, A.J, Rodger, C.J, Bharmal, N.A, Yearby, K.H

“…Lightning is considered to be a sensitive indicator of global change in the troposphere. In this paper we report the first results from the lightning…”
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A tomographic algorithm to determine tip-tilt information from laser guide stars by Reeves, A. P, Morris, T. J, Myers, R. M, Bharmal, N. A, Osborn, J

“…Laser Guide Stars (LGS) have greatly increased the sky-coverage of Adaptive Optics (AO) systems. Due to the up-link turbulence experienced by LGSs, a Natural…”
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Experience with wavefront sensor and deformable mirror interfaces for wide-field adaptive optics systems by Basden, A. G., Atkinson, D., Bharmal, N. A., Bitenc, U., Brangier, M., Buey, T., Butterley, T., Cano, D., Chemla, F., Clark, P., Cohen, M., Conan, J.-M., de Cos, F. J., Dickson, C., Dipper, N. A., Dunlop, C. N., Feautrier, P., Fusco, T., Gach, J. L., Gendron, E., Geng, D., Goodsell, S. J., Gratadour, D., Greenaway, A. H., Guesalaga, A., Guzman, C. D., Henry, D., Holck, D., Hubert, Z., Huet, J. M., Kellerer, A., Kulcsar, C., Laporte, P., Le Roux, B., Looker, N., Longmore, A. J., Marteaud, M., Martin, O., Meimon, S., Morel, C., Morris, T. J., Myers, R. M., Osborn, J., Perret, D., Petit, C., Raynaud, H., Reeves, A. P., Rousset, G., Sanchez Lasheras, F., Sanchez Rodriguez, M., Santos, J. D., Sevin, A., Sivo, G., Stadler, E., Stobie, B., Talbot, G., Todd, S., Vidal, F., Younger, E. J.

“…Recent advances in adaptive optics (AO) have led to the implementation of wide field-of-view AO systems. A number of wide-field AO systems are also planned for…”
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The Durham Adaptive Optics Simulation Platform (DASP): Current status by Basden, A.G., Bharmal, N.A., Jenkins, D., Morris, T.J., Osborn, J., Peng, J., Staykov, L.

“…The Durham Adaptive Optics Simulation Platform (DASP) is a Monte-Carlo modelling tool used for the simulation of astronomical and solar adaptive optics…”
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Monte-Carlo simulation of ELT scale multi-object adaptive optics deformable mirror requirements and tolerances by Basden, A. G, Bharmal, N. A, Myers, R. M, Morris, S. L, Morris, T. J

“…Multi-object adaptive optics (MOAO) has been demonstrated by the CANARY instrument on the William Herschel Telescope. However, for proposed MOAO systems on the…”
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Experience with wavefront sensor and deformable mirror interfaces for wide-field adaptive optics systems by Basden, A. G, Atkinson, D, Bharmal, N. A, Bitenc, U, Brangier, M, Buey, T, Butterley, T, Cano, D, Chemla, F, Clark, P, Cohen, M, Conan, J. -M, de Cos, F. J, Dickson, C, Dipper, N. A, Dunlop, C. N, Feautrier, P, Fusco, T, Gach, J. L, Gendron, E, Geng, D, Goodsell, S. J, Gratadour, D, Greenaway, A. H, Guesalaga, A, Guzman, C. D, Henry, D, Holck, D, Hubert, Z, Huet, J. M, Kellerer, A, Kulcsar, C, Laporte, P, Roux, B. Le, Looker, N, Longmore, A. J, Marteaud, M, Martin, O, Meimon, S, Morel, C, Morris, T. J, Myers, R. M, Osborn, J, Perret, D, Petit, C, Raynaud, H, Reeves, A. P, Rousset, G, Lasheras, F. Sanchez, Rodriguez, M. Sanchez, Santos, J. D, Sevin, A, Sivo, G, Stadler, E, Stobie, B, Talbot, G, Todd, S, Vidal, F, Younger, E. J

“…Recent advances in adaptive optics (AO) have led to the implementation of wide field-of-view AO systems. A number of wide-field AO systems are also planned for…”
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Overview of observations from the RADAGAST experiment in Niamey, Niger: 2. Radiative fluxes and divergences : First Results from the RADAGAST Experiment by SLINGO, A, WHITE, H. E, BHARMAL, N. A, ROBINSON, G. J

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Simulation of surface and top of atmosphere thermal fluxes and radiances from the radiative atmospheric divergence using the ARM Mobile Facility, GERB data, and AMMA Stations experiment : First Results from the RADAGAST Experiment by BHARMAL, N. A, SLINGO, A, ROBINSON, G. J, SETTLE, J. J

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Near-focus high-sensitivity wavefront sensing by Bharmal, N. A., Buscher, D. F., Haniff, C. A.

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