Results 1 to 10 of about 290,655 (199)

Multi-Site Simultaneous Time-Resolved Photometry with a Low Cost Electro-Optics System [PDF]

open access: goldSensors, 2017
Sunlight reflected off of resident space objects can be used as an optical signal for astrometric orbit determination and for deducing geometric information about the object.
Forrest Gasdia   +2 more
doaj   +3 more sources

Stellar photometry with multi conjugate adaptive optics [PDF]

open access: greenSPIE Proceedings, 2016
We overview the current status of photometric analyses of images collected with Multi Conjugate Adaptive Optics (MCAO) at 8–10m class telescopes that operated, or are operating, on sky.
G. Fiorentino   +16 more
semanticscholar   +7 more sources

Influence of Mie scattering on nanoparticles with different particle sizes and shapes: photometry and analytical ultracentrifugation with absorption optics [PDF]

open access: diamondJournal of the Serbian Chemical Society, 2005
Nanoparticles are used in large quantities for very different applications. A precise determination of the diameter and the particle size distribution which is responsible for the application properties is therefore essential.
M. D. LECHNER
doaj   +6 more sources

Quantifying the Contamination from nearby Stellar Companions in Gaia DR3 Photometry [PDF]

open access: yesThe Astronomical Journal
Identifying 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
doaj   +2 more sources

OGLE-2016-BLG-1195Lb: A Sub-Neptune Beyond the Snow Line of an M-dwarf Confirmed by Keck Adaptive Optics

open access: yesThe Astronomical Journal, 2023
We present the analysis of high-resolution follow-up observations of OGLE-2016-BLG-1195 using Laser Guide Star Adaptive Optics with Keck, seven years after the event’s peak.
Aikaterini Vandorou   +20 more
doaj   +2 more sources

PROBABILITY OF THE PHYSICAL ASSOCIATION OF 104 BLENDED COMPANIONS TO KEPLER OBJECTS OF INTEREST USING VISIBLE AND NEAR-INFRARED ADAPTIVE OPTICS PHOTOMETRY [PDF]

open access: green, 2016
We determine probabilities of physical association for stars in blended Kepler Objects of Interest (KOIs), and find that of companions within ∼4″ are consistent with being physically unassociated with their primary.
Dani Atkinson   +5 more
openalex   +3 more sources

DDO68 C: The Actual Appearance of a Ghost Satellite Dwarf through Adaptive Optics at the Large Binocular Telescope [PDF]

open access: yesThe 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   +2 more sources

Optimal Stellar Photometry for Multi-conjugate Adaptive Optics Systems Using Science-based Metrics [PDF]

open access: bronze, 2017
We present a detailed discussion of how to obtain precise stellar photometry in crowded fields using images from multi-conjugate adaptive optics (MCAO) systems, with the intent of informing the scientific development of this key technology for the ...
P. Turri   +7 more
openalex   +3 more sources

Recent results and perspectives for precision astrometry and photometry with adaptive optics [PDF]

open access: bronzeAstronomical Telescopes + Instrumentation, 2010
Large ground-based telescopes equipped with adaptive optics (AO) systems have ushered in a new era of highresolution infrared photometry and astrometry. Relative astrometric accuracies of
Jessica R. Lu   +6 more
openalex   +3 more sources

REFERENCE-LESS DETECTION, ASTROMETRY, AND PHOTOMETRY OF FAINT COMPANIONS WITH ADAPTIVE OPTICS [PDF]

open access: bronze, 2009
We propose a complete framework for the detection, astrometry, and photometry of faint companions from a sequence of adaptive optics (AO) corrected short exposures.
Szymon Gladysz, Julian C. Christou
openalex   +3 more sources

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