Astronomy and Astrophysics – Astrophysics – Instrumentation and Methods for Astrophysics
Scientific paper
2010-09-15
Astronomy and Astrophysics
Astrophysics
Instrumentation and Methods for Astrophysics
To be submitted to A&A (instrumentation section)
Scientific paper
Accurate astrophysical polarimetry requires a proper characterization of the polarization properties of the telescope and instrumentation employed to obtain the observations. Determining the telescope and instrument Muller matrix is becoming increasingly difficult with the increase in aperture size of the new and upcoming solar telescopes. We have carried out a detailed multi-wavelength characterization of the Dunn Solar Telescope (DST) at the National Solar Observatory/Sacramento Peak as a case study and explore various possibilites for the determination of its polarimetric properties. We show that the telescope model proposed in this paper is more suitable than that in previous work in that it describes better the wavelength dependence of aluminum-coated mirrors. We explore the adequacy of the degrees of freedom allowed by the model using a novel mathematical formalism. Finally, we investigate the use of polarimeter calibration data taken at different times of the day to characterize the telescope and find that very valuable information on the telescope properties can be obtained in this manner. The results are also consistent with the entrance window polarizer measurements, opening very interesting possibilities for the calibration of future large-aperture solar telescopes such as the ATST or the EST.
Asensio Ramos Andrés
Elmore David
Socas-Navarro Hector
No associations
LandOfFree
Characterization of Solar Telescope Polarization Properties Across the Visible and Near-Infrared Spectrum. Case Study: The Dunn Solar Telescope does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Characterization of Solar Telescope Polarization Properties Across the Visible and Near-Infrared Spectrum. Case Study: The Dunn Solar Telescope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characterization of Solar Telescope Polarization Properties Across the Visible and Near-Infrared Spectrum. Case Study: The Dunn Solar Telescope will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-77048