Results 41 to 50 of about 127,969 (344)
Correction of UBV Photometry for Emission Lines
Open Astronomy, 2003 We investigate the effect on U,B,V magnitudes of the removal of emission lines from the spectra of some symbiotic stars and novae during their nebular phases.
Skopal A.
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A Comprehensive Comparison of Period Extraction Algorithms for Asteroids with Long Term Observation
Universe, 2021 The light curve period of an asteroid plays an important role in determining the rotation period, the collision evolution and the YORP effect. There are many period extraction algorithms used to find the light curve period of asteroids with long term ...
Yang Liu +6 more
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Photometric Mesh Optimization for Video-Aligned 3D Object Reconstruction [PDF]
Computer Vision and Pattern Recognition, 2019 In this paper, we address the problem of 3D object mesh reconstruction from RGB videos. Our approach combines the best of multi-view geometric and data-driven methods for 3D reconstruction by optimizing object meshes for multi-view photometric ...
Chen-Hsuan Lin +6 more
semanticscholar +1 more source
Odessa Astronomical Publications, 2014 Method for estimating the accuracy of astrometric (rectangular coordinates) and photometric (diameters and magnitudes) characteristics of commercial scanners is proposed and applied.
Yu. I. Protsyuk +10 more
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On the Data Reduction of WET Observations
Open Astronomy, 2003 It is demonstrated how the length of a continuous time-series of photometric data and their gaps affect the power spectrum of a Fourier Transform of the data.
Pakštienė Erika
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Photometric redshift calibration with self-organising maps [PDF]
Astronomy & Astrophysics, 2019 Accurate photometric redshift calibration is central to the robustness of all cosmology constraints from cosmic shear surveys. Analyses of the Kilo-Degree Survey (KiDS) re-weighted training samples from all overlapping spectroscopic surveys to provide a ...
A. Wright +3 more
semanticscholar +1 more source
Experience in CCD Photometry at the Tartu Observatory
Open Astronomy, 2003 We give overview of the CCD instrumentation and data reduction techniques used at the Tartu Observatory. The first results from photometric observations of the peculiar variable V838 Mon are presented.
Tuvikene T., Kolka I.
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Atmospheric Extinction Corrections for WET Observations
Open Astronomy, 2003 Account of the extinction in the Earth’s atmosphere is an important part of the WET light curve reduction procedures. Usually, WET observations are not corrected for the second order extinction effects: the dependence of the extinction coefficient on ...
Pakštienė E., Solheim J. E.
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Example-Based Multispectral Photometric Stereo for Multi-Colored Surfaces
Journal of Imaging, 2022 A photometric stereo needs three images taken under three different light directions lit one by one, while a color photometric stereo needs only one image taken under three different lights lit at the same time with different light directions and ...
Daisuke Miyazaki, Kazuya Uegomori
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Photometric Redshifts of Quasars
The Astronomical Journal, 2001 We demonstrate that the design of the Sloan Digital Sky Survey (SDSS) filter system and the quality of the SDSS imaging data are sufficient for determining accurate and precise photometric redshifts (``photo-z''s) of quasars. Using a sample of 2625 quasars, we show that photo-z determination is even possible for z<=2.2 despite the lack of a strong ...
Tamás Budavári +39 more
openaire +3 more sources