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

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 mu m) 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 similar 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.

Identiferoai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/622809
Date09 August 2016
CreatorsSpalding, Eckhart, Skemer, Andrew, Hinz, Philip M., Hill, John M.
ContributorsUniv Arizona, Steward Observ, Univ Arizona, Large Binocular Telescope Observ, Steward Observatory, The Univ. of Arizona (United States), Univ. of California, Santa Cruz (United States), Steward Observatory, The Univ. of Arizona (United States), Large Binocular Telescope Observatory, The Univ. of Arizona (United States)
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Source SetsUniversity of Arizona
LanguageEnglish
Detected LanguageEnglish
TypeArticle
Rights© 2016 SPIE
Relationhttp://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2233811

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