The upgrade of HARPS to a full-Stokes high-resolution spectropolarimeter

F. Snik; S.V. Jeffers; C.U. Keller; N. Piskunov; O. Kochukhov; J. Valenti; C. Johns-Krull

The upgrade of HARPS to a full-Stokes high-resolution spectropolarimeter

F. Snik, S.V. Jeffers, C.U. Keller, N. Piskunov, O. Kochukhov, J. Valenti, C. Johns-Krull

Dept of Physics

extern

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

Abstract

We present the design of a compact module that converts the HARPS instrument at the 3.6-m telescope at La Silla to a full-Stokes high-resolution spectropolarimeter. The polarimeter will replace the obsolete Iodine cell inside the HARPS Cassegrain adapter. Utilizing the two fibers going into the spectrograph, two dual-beam systems can be positioned in the beam: one with a rotating superachromatic quarter-wave plate for circular polarimetry and one with a rotating superachromatic half-wave plate for linear polarimetry. A large polarimetric precision is ensured by the beam-exchange technique and a minimal amount of instrumental polarization. The polarimeter, in combination with the ultra-precise HARPS spectrograph, enables unprecedented observations of stellar magnetic fields and circumstellar material without compromising the successful planet-finding program.

Original language	Undefined/Unknown
Title of host publication	Ground-based and Airborne Instrumentation for Astronomy II
Editors	I.S. McLean, M.M. Casali
Place of Publication	Bellingham, Washington
Publisher	SPIE
Pages	70140O
Publication status	Published - 2008

Publication series

Name	Proceedings of SPIE
Number	7014

Cite this

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title = "The upgrade of HARPS to a full-Stokes high-resolution spectropolarimeter",

abstract = "We present the design of a compact module that converts the HARPS instrument at the 3.6-m telescope at La Silla to a full-Stokes high-resolution spectropolarimeter. The polarimeter will replace the obsolete Iodine cell inside the HARPS Cassegrain adapter. Utilizing the two fibers going into the spectrograph, two dual-beam systems can be positioned in the beam: one with a rotating superachromatic quarter-wave plate for circular polarimetry and one with a rotating superachromatic half-wave plate for linear polarimetry. A large polarimetric precision is ensured by the beam-exchange technique and a minimal amount of instrumental polarization. The polarimeter, in combination with the ultra-precise HARPS spectrograph, enables unprecedented observations of stellar magnetic fields and circumstellar material without compromising the successful planet-finding program.",

author = "F. Snik and S.V. Jeffers and C.U. Keller and N. Piskunov and O. Kochukhov and J. Valenti and C. Johns-Krull",

year = "2008",

language = "Undefined/Unknown",

series = "Proceedings of SPIE",

publisher = "SPIE",

number = "7014",

pages = "70140O",

editor = "I.S. McLean and M.M. Casali",

booktitle = "Ground-based and Airborne Instrumentation for Astronomy II",

address = "United States",

}

The upgrade of HARPS to a full-Stokes high-resolution spectropolarimeter. / Snik, F.; Jeffers, S.V.; Keller, C.U. et al.
Ground-based and Airborne Instrumentation for Astronomy II. ed. / I.S. McLean; M.M. Casali. Bellingham, Washington: SPIE, 2008. p. 70140O (Proceedings of SPIE; No. 7014).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

TY - CHAP

T1 - The upgrade of HARPS to a full-Stokes high-resolution spectropolarimeter

AU - Snik, F.

AU - Jeffers, S.V.

AU - Keller, C.U.

AU - Piskunov, N.

AU - Kochukhov, O.

AU - Valenti, J.

AU - Johns-Krull, C.

PY - 2008

Y1 - 2008

N2 - We present the design of a compact module that converts the HARPS instrument at the 3.6-m telescope at La Silla to a full-Stokes high-resolution spectropolarimeter. The polarimeter will replace the obsolete Iodine cell inside the HARPS Cassegrain adapter. Utilizing the two fibers going into the spectrograph, two dual-beam systems can be positioned in the beam: one with a rotating superachromatic quarter-wave plate for circular polarimetry and one with a rotating superachromatic half-wave plate for linear polarimetry. A large polarimetric precision is ensured by the beam-exchange technique and a minimal amount of instrumental polarization. The polarimeter, in combination with the ultra-precise HARPS spectrograph, enables unprecedented observations of stellar magnetic fields and circumstellar material without compromising the successful planet-finding program.

AB - We present the design of a compact module that converts the HARPS instrument at the 3.6-m telescope at La Silla to a full-Stokes high-resolution spectropolarimeter. The polarimeter will replace the obsolete Iodine cell inside the HARPS Cassegrain adapter. Utilizing the two fibers going into the spectrograph, two dual-beam systems can be positioned in the beam: one with a rotating superachromatic quarter-wave plate for circular polarimetry and one with a rotating superachromatic half-wave plate for linear polarimetry. A large polarimetric precision is ensured by the beam-exchange technique and a minimal amount of instrumental polarization. The polarimeter, in combination with the ultra-precise HARPS spectrograph, enables unprecedented observations of stellar magnetic fields and circumstellar material without compromising the successful planet-finding program.

M3 - Chapter

T3 - Proceedings of SPIE

SP - 70140O

BT - Ground-based and Airborne Instrumentation for Astronomy II

A2 - McLean, I.S.

A2 - Casali, M.M.

PB - SPIE

CY - Bellingham, Washington

ER -