autocal: a software application for calibrating photometric data

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ID: 259813
2016
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Abstract
We present a software application for the calibration of stellar magnitudes in the absence of standard stars. It uses an existing algorithm to match stars in the target’s field of view to catalogue entries and computes the average offset between the two sets of magnitudes using a weighted least-squares approach. This offset is used to calibrate the target’s instrumental magnitude. The software application was used to calibrate magnitudes for six Be/X-ray binary sources in the Small Magellanic Cloud and the results were compared with published results for these sources. Where comparisons were possible, our results agreed with those results within the uncertainties specified. Infrared variability was found for all six of the sources tested. The interactive outlier removal that was made possible by our software allowed for smaller uncertainties to be reported for our results. The AutoCal software is openly available here: http://hdl.handle.net/11660/2382
Reference Key
wium2016southautocal: Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Daniël J. Wium;Brian van Soelen
Journal hungarian geographical bulletin
Year 2016
DOI
10.17159/sajs.2016/20150034
URL
https://www.sajs.co.za/article/view/4061
Keywords
software astrophysics calibrationsciencescience (general)social sciencessocial sciences (general)

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