Cyclops: A single beam 1.3 millimeter polarimeter

Jason Glenn; Christopher K. Walker; Erick T. Young

doi:10.1007/BF02677921

Cyclops: A single beam 1.3 millimeter polarimeter

Jason Glenn, Christopher K. Walker, Erick T. Young

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We present the design of a broad band, 1.3 mm polarimeter for astronomical observations and the results of first light observations at the Heinrich Hertz Telescope (HHT). The systematic polarization of the instrument plus telescope is 1.1%. The observed linear polarization of DR 21, P = 1.65%±0.14% and θ = 16° ± 2°, is consistent with previous measurements. Our 0.9% upper limit on the linear polarization of Cepheus A is the first 1.3 mm measurement reported. With Cyclops it is possible to map the magnetic fields in several of the brightest molecular cloud dust cores in the Milky Way. We comment on the expected performance of an achromatic Rexolite half-waveplate for λ = 800 μm to 1.3 mm.

Original language	English (US)
Pages (from-to)	285-300
Number of pages	16
Journal	International Journal of Infrared and Millimeter Waves
Volume	18
Issue number	2
DOIs	https://doi.org/10.1007/BF02677921
State	Published - Feb 1997

ASJC Scopus subject areas

Radiation
Atomic and Molecular Physics, and Optics
Instrumentation
Condensed Matter Physics
Physics and Astronomy (miscellaneous)
Electrical and Electronic Engineering

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10.1007/BF02677921

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@article{e1103633bb4b47899770be754a93414a,

title = "Cyclops: A single beam 1.3 millimeter polarimeter",

abstract = "We present the design of a broad band, 1.3 mm polarimeter for astronomical observations and the results of first light observations at the Heinrich Hertz Telescope (HHT). The systematic polarization of the instrument plus telescope is 1.1%. The observed linear polarization of DR 21, P = 1.65%±0.14% and θ = 16° ± 2°, is consistent with previous measurements. Our 0.9% upper limit on the linear polarization of Cepheus A is the first 1.3 mm measurement reported. With Cyclops it is possible to map the magnetic fields in several of the brightest molecular cloud dust cores in the Milky Way. We comment on the expected performance of an achromatic Rexolite half-waveplate for λ = 800 μm to 1.3 mm.",

author = "Jason Glenn and Walker, {Christopher K.} and Young, {Erick T.}",

note = "Funding Information: There are many people that have made the construction of the polarimeter and the observations possible. We would like to thank Dan Clemens and Richard Barvainis for useful discussions regarding Rexolite waveplates. Thanks also go to Richard Chamberlain and Jeff Kingsley for useful discussions about fabricating aluminum mirrors. We thank the director and staff of the HHT for their support during the installation and testing of the instrument. Mike Cobb at the Naval Research Laboratories loaned us the 3He dewar used in the laboratory tests. Craig Kulesa and Chad Engelbracht assisted with the observations. J. Glenn acknowledges NASA for the GSRP fellowship NGT-51328. C. Walker acknowledges the NSF for the NYI fellowship 9457445. E. T. Young acknowledges NASA for grant NAGW-1285.",

year = "1997",

month = feb,

doi = "10.1007/BF02677921",

language = "English (US)",

volume = "18",

pages = "285--300",

journal = "International Journal of Infrared and Millimeter Waves",

issn = "0195-9271",

publisher = "Springer New York",

number = "2",

}

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T1 - Cyclops

T2 - A single beam 1.3 millimeter polarimeter

AU - Glenn, Jason

AU - Walker, Christopher K.

AU - Young, Erick T.

N1 - Funding Information: There are many people that have made the construction of the polarimeter and the observations possible. We would like to thank Dan Clemens and Richard Barvainis for useful discussions regarding Rexolite waveplates. Thanks also go to Richard Chamberlain and Jeff Kingsley for useful discussions about fabricating aluminum mirrors. We thank the director and staff of the HHT for their support during the installation and testing of the instrument. Mike Cobb at the Naval Research Laboratories loaned us the 3He dewar used in the laboratory tests. Craig Kulesa and Chad Engelbracht assisted with the observations. J. Glenn acknowledges NASA for the GSRP fellowship NGT-51328. C. Walker acknowledges the NSF for the NYI fellowship 9457445. E. T. Young acknowledges NASA for grant NAGW-1285.

PY - 1997/2

Y1 - 1997/2

N2 - We present the design of a broad band, 1.3 mm polarimeter for astronomical observations and the results of first light observations at the Heinrich Hertz Telescope (HHT). The systematic polarization of the instrument plus telescope is 1.1%. The observed linear polarization of DR 21, P = 1.65%±0.14% and θ = 16° ± 2°, is consistent with previous measurements. Our 0.9% upper limit on the linear polarization of Cepheus A is the first 1.3 mm measurement reported. With Cyclops it is possible to map the magnetic fields in several of the brightest molecular cloud dust cores in the Milky Way. We comment on the expected performance of an achromatic Rexolite half-waveplate for λ = 800 μm to 1.3 mm.

AB - We present the design of a broad band, 1.3 mm polarimeter for astronomical observations and the results of first light observations at the Heinrich Hertz Telescope (HHT). The systematic polarization of the instrument plus telescope is 1.1%. The observed linear polarization of DR 21, P = 1.65%±0.14% and θ = 16° ± 2°, is consistent with previous measurements. Our 0.9% upper limit on the linear polarization of Cepheus A is the first 1.3 mm measurement reported. With Cyclops it is possible to map the magnetic fields in several of the brightest molecular cloud dust cores in the Milky Way. We comment on the expected performance of an achromatic Rexolite half-waveplate for λ = 800 μm to 1.3 mm.

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SN - 0195-9271

VL - 18

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JO - International Journal of Infrared and Millimeter Waves

JF - International Journal of Infrared and Millimeter Waves

IS - 2

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Cyclops: A single beam 1.3 millimeter polarimeter

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