Results 31 to 40 of about 1,351 (207)
Array Polarimetry and Optical-Differencing Photometry [PDF]
Symposium - International Astronomical Union, 1995 Array detectors have improved the efficiency of optical polarimetry sufficiently for this technique to become part of the standard arsenal of observational facilities. However, we could gain even more: spatially-differentiating photometry can be implemented as an option of array Polarimeters and low-noise, high-frame-rate array detectors will allow ...
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Optical Photometry of Flares and Flare Statistics [PDF]
International Astronomical Union Colloquium, 1983 This review discusses optical observations of flares and the results gleaned from these. Excellent reviews of flare activity have been published in the past and one might mention in particular Kunkel (1975), Gershberg (1978) and Gurzadyan (1980). In general these have been more broadly based than the present review incorporating other aspects of flare ...
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Energies, 2018 Energy saving in street lighting is garnering more interest and has become a priority in municipal management. Therefore, LED luminaires are gradually becoming prevalent in our cities.
Alfonso Gago-Calderón +3 more
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Optical polarimetry and photometry of comet 17P/Holmes [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 11pages, 7 figures, accepted for publication in ...
U. C. Joshi +2 more
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MODERNIZATION OF AZT-22 TELESCOPE OF MAIDANAK HIGH-ALTITUDE OBSERVATORY: TESTING RESULTS
Radio Physics and Radio Astronomy, 2014 The AZT-22 telescope, equipped with the ML09000-65 CCD camera, has shown to be capable of obtaining high-quality images of astronomical objects and thus solving a wide range of observational tasks.
A. V. Sergeev +9 more
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Optical photometry and polarimetry and infrared photometry of 3C 345 in outburst
The Astrophysical Journal, 1993 We present V-band CCD photometry, UBVRI photopolarimetry, and near simultaneous JHK photometry of 3C 345 during a renewed outburst in spring of 1992, which reached maximum at the end of April. The observations also show a large and variable polarization.
Masami Okyudo +4 more
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Optical spectroscopy and photometry of SAX J1808.4−3658 in outburst [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We present phase resolved optical spectroscopy and photometry of V4580 Sagittarii, the optical counterpart to the accretion powered millisecond pulsar SAX J1808.4-3658, obtained during the 2008 September/October outburst. Doppler tomography of the N III 4640.64 Bowen blend emission line reveals a focused spot of emission at a location consistent with ...
Mark Reynolds +12 more
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Optical photometry and spectroscopy of the 1987A-like supernova 2009mw [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 We present optical photometric and spectroscopic observations of the 1987A-like supernova (SN) 2009mw. Our $BVRI$ and $g'r'i'z'$ photometry covers 167 days of evolution, including the rise to the light curve maximum, and ends just after the beginning of the linear tail phase.
Aaron P. LaCluyze +14 more
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Quantifying the Contamination from nearby Stellar Companions in Gaia DR3 Photometry
The Astronomical JournalIdentifying and removing binary stars from stellar samples is a crucial but complicated task. Regardless of how carefully a sample is selected, some binaries will remain and complicate interpretation of results, especially via flux contamination of ...
Kendall Sullivan +3 more
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Advanced Materials, EarlyView.Convergence drawing is used to create flexible, microscale, multifunctional fiber‐based neural probes. Optimized materials selection enables individual devices to perform neural recording, electrical stimulation, optogenetics, fiber photometry, fluid delivery, and voltammetric neurotransmitter detection in rodents.
Nicolette Driscoll +16 more
wiley +1 more source