TY - GEN
T1 - On-sky operations with the ALES integral field spectrograph
AU - Stone, Jordan M.
AU - Skemer, Andrew J.
AU - Hinz, Philip
AU - Briesemeister, Zack
AU - Barman, Travis
AU - Woodward, Charles E.
AU - Skrutskie, Mike
AU - Leisenring, Jarron
N1 - Publisher Copyright:
© 2018 SPIE.
PY - 2018
Y1 - 2018
N2 - The integral field spectrograph configuration of the LMIRCam science camera within the Large Binocular Telescope Interferometer (LBTI) facilitates 2 to 5 μm spectroscopy of directly imaged gas-giant exoplanets. The mode, dubbed ALES, comprises magnification optics, a lenslet array, and direct-vision prisms, all of which are included within filter wheels in LMIRCam. Our observing approach includes manual adjustments to filter wheel positions to optimize alignment, on/off nodding to track sky-background variations, and wavelength calibration using narrow band filters in series with ALES optics. For planets with separations outside our 1"x1" field of view, we use a three-point nod pattern to visit the primary, secondary and sky. To minimize overheads we select the longest exposure times and nod periods given observing conditions, especially sky brightness and variability. Using this strategy we collected several datasets of low-mass companions to nearby stars.
AB - The integral field spectrograph configuration of the LMIRCam science camera within the Large Binocular Telescope Interferometer (LBTI) facilitates 2 to 5 μm spectroscopy of directly imaged gas-giant exoplanets. The mode, dubbed ALES, comprises magnification optics, a lenslet array, and direct-vision prisms, all of which are included within filter wheels in LMIRCam. Our observing approach includes manual adjustments to filter wheel positions to optimize alignment, on/off nodding to track sky-background variations, and wavelength calibration using narrow band filters in series with ALES optics. For planets with separations outside our 1"x1" field of view, we use a three-point nod pattern to visit the primary, secondary and sky. To minimize overheads we select the longest exposure times and nod periods given observing conditions, especially sky brightness and variability. Using this strategy we collected several datasets of low-mass companions to nearby stars.
KW - Exoplanet Characterization
KW - High-Contrast
KW - Integral Field Spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85052628328&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85052628328&partnerID=8YFLogxK
U2 - 10.1117/12.2313977
DO - 10.1117/12.2313977
M3 - Conference contribution
AN - SCOPUS:85052628328
SN - 9781510619579
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Ground-based and Airborne Instrumentation for Astronomy VII
A2 - Simard, Luc
A2 - Simard, Luc
A2 - Evans, Christopher J.
A2 - Takami, Hideki
PB - SPIE
T2 - Ground-based and Airborne Instrumentation for Astronomy VII 2018
Y2 - 10 June 2018 through 14 June 2018
ER -