Difference image analysis: The interplay between the photometric scale factor and systematic photometric errors

@article{Bramich2015DifferenceIA,
  title={Difference image analysis: The interplay between the photometric scale factor and systematic photometric errors},
  author={Daniel M. Bramich and Etienne Bachelet and Khalid A. Alsubai and Dimitris Mislis and Naval Parley},
  journal={arXiv: Instrumentation and Methods for Astrophysics},
  year={2015}
}
  • Daniel M. Bramich, Etienne Bachelet, +2 authors Naval Parley
  • Published 2015
  • Physics
  • arXiv: Instrumentation and Methods for Astrophysics
  • Context: Understanding the source of systematic errors in photometry is essential for their calibration. Aims: We investigate how photometry performed on difference images can be influenced by errors in the photometric scale factor. Methods: We explore the equations for difference image analysis (DIA) and we derive an expression describing how errors in the difference flux, the photometric scale factor and the reference flux are propagated to the object photometry. Results: We find that the… CONTINUE READING