In Spring 2013, the LEECH (LBTI Exozodi Exoplanet Common Hunt) survey began its ∼130-night campaign from the Large Binocular Telescope (LBT) atop Mt Graham, Arizona. This survey benefits from the many technological achievements of the LBT, including two 8.4-meter mirrors on a single fixed mount, dual adaptive secondary mirrors for high Strehl performance, and a cold beam combiner to dramatically reduce the telescope's overall background emissivity. LEECH neatly complements other high-contrast planet imaging efforts by observing stars at L' (3.8 μm), as opposed to the shorter wavelength near-infrared bands (1-2.4 μm) of other surveys. This portion of the spectrum offers deep mass sensitivity, especially around nearby adolescent (∼0.1-1 Gyr) stars. LEECH's contrast is competitive with other extreme adaptive optics systems, while providing an alternative survey strategy. Additionally, LEECH is characterizing known exoplanetary systems with observations from 3-5μm in preparation for JWST.
|Original language||English (US)|
|Title of host publication||Adaptive Optics Systems IV|
|Editors||Jean-Pierre Veran, Enrico Marchetti, Laird M. Close|
|State||Published - 2014|
|Event||Adaptive Optics Systems IV - Montreal, Canada|
Duration: Jun 22 2014 → Jun 27 2014
|Name||Proceedings of SPIE - The International Society for Optical Engineering|
|Other||Adaptive Optics Systems IV|
|Period||6/22/14 → 6/27/14|
Bibliographical notePublisher Copyright:
© 2014 SPIE.
- adaptive optics