37 citations · 173 across the 8 of their papers we have counts for
8 papers
Calibrating and Stabilizing Spectropolarimeters with Charge Shuffling and Daytime Sky Measurements
David Harrington, J. R. Kuhn, Rebecca Nevin
Well-calibrated spectropolarimetry studies at resolutions of 10,000 with signal-to-noise ratios (SNRs) better than 0.01\% across individual line profiles, are becoming common w…
Deriving Telescope Mueller Matrices Using Daytime Sky Polarization Observations
D. M. Harrington, J. R. Kuhn, S. Hall
Telescopes often modify the input polarization of a source so that the measured circular or linear output state of the optical signal can be signficantly different from the input.…
Achromatizing a liquid-crystal spectropolarimeter: Retardance vs Stokes-based calibration of HiVIS
D. M. Harrington, J. R. Kuhn, C. Sennhauser +2
Astronomical spectropolarimeters can be subject to many sources of systematic error which limit the precision and accuracy of the instrument. We present a calibration method for ob…
Ubiquitous H-alpha polarized line profiles: absorptive spectropolarimetric effects and temporal variability in Post-AGB, Herbig Ae/Be and other stellar types
D. M. Harrington, J. R. Kuhn
We show here that the absorptive H-alpha polarized line profile previously seen in many Herbig Ae/Be (HAeBe) stars is a nearly ubiquitous feature of other types of embedded or obsc…
The Near-Star Environment: Spectropolarimetry of Herbig Ae/Be Stars
D. M. Harrington, J. R. Kuhn
The near-star environment around young stars is very dynamic with winds, disks, and outflows. These processes are involved in star and planet formation, and influence the formation…
Spectropolarimetric observations of Herbig Ae/Be Stars I: HiVIS spectropolarimetric calibration and reduction techniques
D. M. Harrington, J. R. Kuhn
Using the HiVIS spectropolarimeter built for the Haleakala 3.7m AEOS telescope in Hawaii, we are collecting a large number of high precision spectropolarimetrc observations of star…