Infrared photometry with 'wall-eyed' pointing at the Large Binocular Telescope

Eckhart Spalding; Andrew Skemer; Philip M. Hinz; John M. Hill

doi:10.1117/12.2233811

Infrared photometry with 'wall-eyed' pointing at the Large Binocular Telescope

Eckhart Spalding, Andrew Skemer, Philip M. Hinz, John M. Hill

Astronomy

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

2 Scopus citations

Abstract

The brightness and variability of the atmosphere in the thermal infrared poses obstacles to precision photometry measurements. The need to remove atmospheric effects calls for the use of a comparison star, but it is usually impossible to fit both science and comparison targets on current long-wavelength (>2 μm) detectors. We present a new pointing mode at the Large Binocular Telescope, which has twin 8.4-m primary mirrors that can be pointed up to ∼2 arcminutes apart and allow the placement of both targets on a small-field infrared detector. We present an observation of the primary transit of an exoplanet in front of its host star, and use it to provide preliminary constraints on the attainable photometric precision.

Original language	English (US)
Title of host publication	Ground-Based and Airborne Instrumentation for Astronomy VI
Editors	Luc Simard, Christopher J. Evans, Hideki Takami
Publisher	SPIE
ISBN (Electronic)	9781510601956
DOIs	https://doi.org/10.1117/12.2233811
State	Published - 2016
Event	Ground-Based and Airborne Instrumentation for Astronomy VI - Edinburgh, United Kingdom Duration: Jun 26 2016 → Jun 30 2016

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9908
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Ground-Based and Airborne Instrumentation for Astronomy VI
Country	United Kingdom
City	Edinburgh
Period	6/26/16 → 6/30/16

Keywords

Exoplanet transit
Infrared
LBT
LBTI
Photometry
XO-2

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.2233811

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Cite this

Spalding, E., Skemer, A., Hinz, P. M., & Hill, J. M. (2016). Infrared photometry with 'wall-eyed' pointing at the Large Binocular Telescope. In L. Simard, C. J. Evans, & H. Takami (Eds.), Ground-Based and Airborne Instrumentation for Astronomy VI [99083C] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9908). SPIE. https://doi.org/10.1117/12.2233811

Infrared photometry with 'wall-eyed' pointing at the Large Binocular Telescope. / Spalding, Eckhart; Skemer, Andrew; Hinz, Philip M.; Hill, John M.

Ground-Based and Airborne Instrumentation for Astronomy VI. ed. / Luc Simard; Christopher J. Evans; Hideki Takami. SPIE, 2016. 99083C (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9908).

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

Spalding, E, Skemer, A, Hinz, PM & Hill, JM 2016, Infrared photometry with 'wall-eyed' pointing at the Large Binocular Telescope. in L Simard, CJ Evans & H Takami (eds), Ground-Based and Airborne Instrumentation for Astronomy VI., 99083C, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9908, SPIE, Ground-Based and Airborne Instrumentation for Astronomy VI, Edinburgh, United Kingdom, 6/26/16. https://doi.org/10.1117/12.2233811

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abstract = "The brightness and variability of the atmosphere in the thermal infrared poses obstacles to precision photometry measurements. The need to remove atmospheric effects calls for the use of a comparison star, but it is usually impossible to fit both science and comparison targets on current long-wavelength (>2 μm) detectors. We present a new pointing mode at the Large Binocular Telescope, which has twin 8.4-m primary mirrors that can be pointed up to ∼2 arcminutes apart and allow the placement of both targets on a small-field infrared detector. We present an observation of the primary transit of an exoplanet in front of its host star, and use it to provide preliminary constraints on the attainable photometric precision.",

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