TY - JOUR
T1 - HIPPI-2 : a versatile high-precision polarimeter
AU - Bailey, Jeremy
AU - Cotton, Daniel V.
AU - Kedziora-Chudczer, Lucyna
AU - De Horta, Ain
AU - Maybour, Darren
PY - 2020
Y1 - 2020
N2 - We describe the High-Precision Polarimetric Instrument-2 (HIPPI-2) a highly versatile stellar polarimeter developed at the University of New South Wales. Two copies of HIPPI-2 have been built and used on the 60-cm telescope at Western Sydney University's (WSU) Penrith Observatory, the 8.1-m Gemini North Telescope at Mauna Kea and extensively on the 3.9-m Anglo-Australian Telescope (AAT). The precision of polarimetry, measured from repeat observations of bright stars in the SDSS g′band, is better than 3.5 ppm (parts per million) on the 3.9-m AAT and better than 11 ppm on the 60-cm WSU telescope. The precision is better at redder wavelengths and poorer in the blue. On the Gemini North 8-m telescope, the performance is limited by a very large and strongly wavelength-dependent TP that reached 1000's of ppm at blue wavelengths and is much larger than we have seen on any other telescope.
AB - We describe the High-Precision Polarimetric Instrument-2 (HIPPI-2) a highly versatile stellar polarimeter developed at the University of New South Wales. Two copies of HIPPI-2 have been built and used on the 60-cm telescope at Western Sydney University's (WSU) Penrith Observatory, the 8.1-m Gemini North Telescope at Mauna Kea and extensively on the 3.9-m Anglo-Australian Telescope (AAT). The precision of polarimetry, measured from repeat observations of bright stars in the SDSS g′band, is better than 3.5 ppm (parts per million) on the 3.9-m AAT and better than 11 ppm on the 60-cm WSU telescope. The precision is better at redder wavelengths and poorer in the blue. On the Gemini North 8-m telescope, the performance is limited by a very large and strongly wavelength-dependent TP that reached 1000's of ppm at blue wavelengths and is much larger than we have seen on any other telescope.
KW - polarimetric remote sensing
KW - polariscope
KW - polarizability (electricity)
UR - https://hdl.handle.net/1959.7/uws:55513
U2 - 10.1017/pasa.2019.45
DO - 10.1017/pasa.2019.45
M3 - Article
SN - 1323-3580
VL - 37
JO - Publications of the Astronomical Society of Australia
JF - Publications of the Astronomical Society of Australia
M1 - e004
ER -