Results 11 to 20 of about 1,477 (175)
Optical and Infrared Photometry of the nearby SN 2017cbv [PDF]
The Astrophysical Journal, 2018 Abstract On 2017 March 11, the DLT40 Transient Discovery Survey discovered SN 2017cbv in NGC 5643, a Type 2 Seyfert Galaxy in the Lupus Constellation. SN 2017cbv went on to become a bright Type Ia supernova, with a V max of 11.51 ± 0.05 mag.
Jerrick Wee +3 more
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Optical and Radio Surface Photometry of NGC 891 [PDF]
Symposium - International Astronomical Union, 1990 A general correlation between the radio and optical continuum surface brightness has been found in the edge-on galaxy NGC 891. This suggests that the relativistic electrons are produced/accelerated in the vicinity of evolved stars or stellar remnants which have a spatial distribution similar to old disk stars.
ALLEN, RJ +3 more
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The photometry of optical instruments [PDF]
Transactions of the Optical Society, 1922 The use of a portable surface-brightness photometer of the polarisation type for the measurement of the fraction of the incident light transmitted by an optical instrument or reflected by a mirror or system of mirrors, and for the measurement of the relative brightness of different parts of the field of view of an optical instrument, is described.
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The Astrophysical Journal Letters, 2023 Through adaptive optics (AO) imaging with the SOUL+LUCI instrument at the Large Binocular Telescope we were able to resolve, for the first time, individual stars in the gas-rich galaxy DDO68 C. This system was already suggested to be interacting with the
Francesca Annibali +9 more
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Fast CCD Photometry in the Taiwan-America Occultation Survey
Open Astronomy, 2003 We describe the efforts of the Taiwan-America Occultation Survey (TAOS) project to develop a data acquisition and analysis scheme for fast CCD imaging photometry.
Chen W. P. +18 more
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Multicolor photometry of the GRB970508 optical remnant [PDF]
Fourth Huntsville gamma-ray burst symposium, 1998 We report results of follow-up multicolor photometry of the optical variable source that is a probable remnant of the gamma-ray burst GRB970508 discovered by the BeppoSAX satellite (IAUC 6649). Observations were carried out in Johnson-Kron-Cousins $ BVR_cI_c system with the 1-m and 6-m telescopes of SAO RAS.
Sokolov, V. V. +6 more
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ChaMPlane Optical Survey: Mosaic Photometry [PDF]
The Astrophysical Journal Supplement Series, 2005 14 pages, 10 figures, 7 tables, accepted in ApJ Supplement for ...
Zhao, Ping +6 more
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Angular Photometry of Biological Tissue by Ellipsoidal Reflector Method
Приборы и методы измерений, 2019 Angular measurements in optics of biological tissues are used for different applied spectroscopic task for roughness surface control, define of refractive index and for research of optical properties.
M. A. Bezuglyi +3 more
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Rationale for the Choice of the Ellipsoidal Reflector Parameters for Biomedical Photometers
Приборы и методы измерений, 2021 Biomedical photometersʼ information-measuring systems with ellipsoidal reflectors have acceptable results in determining of biological tissues optical properties in the visible and near-infrared spectral range. These photometers make it possible to study
N. V. Bezuglaya +5 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.
Mark R. Kidger +4 more
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