Results 31 to 40 of about 316,881 (368)
Color Transformations for the 2MASS Second Incremental Data Release [PDF]
, 2001 Transformation equations are presented to convert colors and magnitudes measured in the AAO, ARNICA, CIT, DENIS, ESO, LCO (Persson standards), MSSSO, SAAO, and UKIRT photometric systems to the photometric system inherent to the 2MASS Second Incremental ...
Allen D. A. +14 more
core +3 more sources
Combining Aperture and PSF-Fitting Photometry
Open Astronomy, 2003 The multiple object and multiple frame (MOMF) CCD photometry package, that combines the advantages of aperture and PSF photometry is described. Results from comparisons with other programs are given; no other photometry package was found to give better ...
Handler G.
doaj +1 more source
Photometric calibration methods for wide-field photometric surveys
SCIENTIA SINICA Physica, Mechanica & Astronomica, 2022 Uniform and accurate photometric calibration plays an important role in the current and next-generation wide-field imaging surveys. Herein, we review the modern photometric calibration methods, including the classic standard star method, "hardware/observation-driven" methods (such as the Ubercalibration, Hypercalibration, and Forward Global Calibration
Huang, Bowen, Xiao, Kai, Yuan, Haibo
openaire +2 more sources
Surface Rotation and Photometric Activity for Kepler Targets. I. M and K Main-sequence Stars [PDF]
Astrophysical Journal Supplement Series, 2019 Brightness variations due to dark spots on the stellar surface encode information about stellar surface rotation and magnetic activity. In this work, we analyze the Kepler long-cadence data of 26,521 main-sequence stars of spectral types M and K in order
A. R. G. Santos +7 more
semanticscholar +1 more source
On the Accuracy of Gaia Photometry
Open Astronomy, 2003 The errors of Gaia photometry originating from tolerancies of the light filter mean wavelengths and half-widths are investigated.
Abromavičius G. +3 more
doaj +1 more source
Recent UBVR Photometry of Symbiotic Stars
Open Astronomy, 2003 We present recent photometric observations of Z And, BF Cyg, and AX Per made in the standard Johnson UBVR system. The main characteristics of their light behavior can be summarized as follows: Z And: our observations cover the recent active phase, from ...
Skopal A. +3 more
doaj +1 more source
The FORS Deep Field: Field selection, photometric observations and photometric catalog [PDF]
, 2002 The FORS Deep Field project is a multi-colour, multi-object spectroscopic investigation of an approx. 7 times 7 region near the south galactic pole based mostly on observations carried out with the FORS instruments attached to the VLT telescopes.
Appenzeller, I. +24 more
core +2 more sources
ASTROIMAGEJ: IMAGE PROCESSING AND PHOTOMETRIC EXTRACTION FOR ULTRA-PRECISE ASTRONOMICAL LIGHT CURVES [PDF]
, 2016 ImageJ is a graphical user interface (GUI) driven, public domain, Java-based, software package for general image processing traditionally used mainly in life sciences fields.
K. Collins +3 more
semanticscholar +1 more source
Avocado: Photometric Classification of Astronomical Transients with Gaussian Process Augmentation [PDF]
Astronomical Journal, 2019 Upcoming astronomical surveys such as the Large Synoptic Survey Telescope (LSST) will rely on photometric classification to identify the majority of the transients and variables that they discover.
Kyle Boone
semanticscholar +1 more source
Optimal multihump filter for photometric redshifts [PDF]
, 2001 We propose a novel type filter for multicolor imaging to improve on the photometric redshift estimation of galaxies. An extra filter - specific to a certain photometric system - may be utilized with high efficiency.
Budavari, Tamas +4 more
core +3 more sources