Abstract
The quadruple lens quasar system QSO 2237+0305, the Einstein Cross, has been daily monitored in two bands (V and R) during four months within the Gravitational Lenses International Time Project at the Nordic Optical Telescope. We report on some technical aspects of the observations and the quality of the data. We have developed a photometric model for obtaining the light-curves of the four QSO components.
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© 2001 Springer Science+Business Media Dordrecht
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Puga, E. et al. (2001). Daily Monitoring of the Gravitational Lens QSO 2237+0305 at the Nordic Optical Telescope. In: Zamorano, J., Gorgas, J., Gallego, J. (eds) Highlights of Spanish Astrophysics II. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1776-2_12
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DOI: https://doi.org/10.1007/978-94-017-1776-2_12
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5705-1
Online ISBN: 978-94-017-1776-2
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