UBVRI photometry. II - The Cousins VRI system, its temperature and absolute flux calibration, and relevance for two-dimensional photometry

1979 ◽  
Vol 91 ◽  
pp. 589 ◽  
Author(s):  
M. S. Bessell
Keyword(s):  
Two Dimensional ◽  
Absolute Flux ◽  
Ubvri Photometry ◽  
Flux Calibration

scholarly journals ABSOLUTE FLUX CALIBRATION OF THE IRAC INSTRUMENT ON THESPITZER SPACE TELESCOPEUSINGHUBBLE SPACE TELESCOPEFLUX STANDARDS

2011 ◽  
Vol 141 (5) ◽  
pp. 173 ◽  
Author(s):  
R. C. Bohlin ◽  
K. D. Gordon ◽  
G. H. Rieke ◽  
D. Ardila ◽  
S. Carey ◽  
...  
Keyword(s):  
Absolute Flux ◽  
Flux Calibration

scholarly journals Characterisation of the MALT90 Survey and the Mopra Telescope at 90 GHz

2013 ◽  
Vol 30 ◽  
Author(s):  
J. B. Foster ◽  
J. M. Rathborne ◽  
P. Sanhueza ◽  
C. Claysmith ◽  
J. S. Whitaker ◽  
...  
Keyword(s):  
Time Of Day ◽  
Repeated Observations ◽  
Absolute Flux ◽  
The Absolute ◽  
Flux Calibration

AbstractWe characterise the Millimetre Astronomy Legacy Team 90 GHz Survey (MALT90) and the Mopra telescope at 90 GHz. We combine repeated position-switched observations of the source G300.968+01.145 with a map of the same source in order to estimate the pointing reliability of the position-switched observations and, by extension, the MALT90 survey; we estimate our pointing uncertainty to be 8 arcsec. We model the two strongest sources of systematic gain variability as functions of elevation and time-of-day and quantify the remaining absolute flux uncertainty. Corrections based on these two variables reduce the scatter in repeated observations from 12%–25% down to 10%–17%. We find no evidence for intrinsic source variability in G300.968+01.145. For certain applications, the corrections described herein will be integral for improving the absolute flux calibration of MALT90 maps and other observations using the Mopra telescope at 90 GHz.

scholarly journals Optical Spectrophotometry of Nova PW Vulpeculae

1990 ◽  
Vol 122 ◽  
pp. 159-160 ◽  
Author(s):  
J. Mikołajewska ◽  
M. Mikołajewski
Keyword(s):  
Spectral Sensitivity ◽  
Spectral Range ◽  
Atmospheric Extinction ◽  
Absolute Flux ◽  
Classical Nova ◽  
The Absolute ◽  
Cassegrain Telescope ◽  
Optical Spectrophotometry ◽  
Low Dispersion ◽  
Flux Calibration

PW Vul (Nowa Vul 1984 #1) was a slow classical nova which began its outburst in July 1984 and reached optical maximum in the first week of August 1984. Eight low dispersion spectra (160 A/mm) in the blue spectral range (λλ3400-5100 A) were secured between October 1984 and July 1985, with the CCS spectrograph equipped with 3.5 arcsec aperture image slicer and mounted on 90 cm Schmidt-Cassegrain telescope at Toruń Observatory. Kodak IIa-O plates were used. In addition two moderate dispersion (40 A/mm) spectra in the Hγ-Hβ range were obtained on 28 October and 3 November 1984, using the same instrumentation. Standard stars were observed on each night to remove the influence of spectral sensitivity of the photographic emulssion and atmospheric extinction. The calibration of the absolute flux scale was performed by comparing synthetic B magnitudes calculated from our spectra with published B photometry of PW Vul (Voloshina 1985, Noskova et al. 1985, Kolotilov and Noskova 1986). The accuracy of the flux calibration is ±0.1 mag.

Absolute flux calibration of stars: calibration of the reference telescope

Metrologia ◽  
2009 ◽  
Vol 46 (4) ◽  
pp. S219-S223 ◽  
Author(s):  
Allan W Smith ◽  
John T Woodward ◽  
Colleen A Jenkins ◽  
Steven W Brown ◽  
Keith R Lykke
Keyword(s):  
Absolute Flux ◽  
Flux Calibration

scholarly journals SYSTEMATIC UNCERTAINTIES IN THE SPECTROSCOPIC MEASUREMENTS OF NEUTRON STAR MASSES AND RADII FROM THERMONUCLEAR X-RAY BURSTS. III. ABSOLUTE FLUX CALIBRATION

2016 ◽  
Vol 829 (1) ◽  
pp. 48 ◽  
Author(s):  
Tolga Güver ◽  
Feryal Özel ◽  
Herman Marshall ◽  
Dimitrios Psaltis ◽  
Matteo Guainazzi ◽  
...  
Keyword(s):  
Neutron Star ◽  
Spectroscopic Measurements ◽  
X Ray ◽  
Absolute Flux ◽  
Systematic Uncertainties ◽  
Flux Calibration

Absolute flux calibration for the MG II observations near 2800 angstroms

1976 ◽  
Vol 210 ◽  
pp. 713 ◽  
Author(s):  
Y. Kondo ◽  
J. E. Duval ◽  
J. L. Modisette ◽  
T. H. Morgan
Keyword(s):  
Absolute Flux ◽  
Flux Calibration

Absolute flux calibration of optical spectrophotometric standard stars

1994 ◽  
Vol 108 ◽  
pp. 1931 ◽  
Author(s):  
L. Colina ◽  
R. C. Bohlin
Keyword(s):  
Absolute Flux ◽  
Flux Calibration
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