Results 11 to 20 of about 2,141 (221)
Macular pigment optical density measured by heterochromatic modulation photometry. [PDF]
PLoS ONE, 2014 PURPOSE:To psychophysically determine macular pigment optical density (MPOD) employing the heterochromatic modulation photometry (HMP) paradigm by estimating 460 nm absorption at central and peripheral retinal locations. METHODS:For the HMP measurements,
Cord Huchzermeyer +5 more
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Optical and Infrared Photometry of SN 2005df* [PDF]
Research Notes of the AAS, 2017 12 pages, 3 figures, to be published in Research Notes of the ...
Kevin Krisciunas +5 more
openaire +2 more sources
Remote Sensing, 2020 Orientation information of space debris is required to improve the orbital prediction accuracy for mitigation or elimination of a significant threat to not only human space activities but also operational satellites.
Hyung-Chul Lim +6 more
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Optical Photometry of GRB 021004: The First Month [PDF]
The Astronomical Journal, 2003 21 pages with five figures. Uses AASTEX 5.02. To appear in AJ.
Holland, S.T. +19 more
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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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Stellar Photometry with the Optical Monitors [PDF]
International Astronomical Union Colloquium, 1993 AbstractThe Optical Monitors are small optical telescopes which will fly on board of the X-ray satellites SPECTRUM-X-GAMMA (JET-X experiment) and XMM. Their main scientific applications are the simultaneous observations (imaging) in the optical and UV band of the optical counterparts of X-ray sources, with limiting magnitudes of aboutmv=22(JET-X) and ...
E. Antonello, M. Cropper
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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
doaj +1 more source
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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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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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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