On-sky operations with the ALES integral field spectrograph

Jordan M. Stone; Andrew J. Skemer; Philip M Hinz; Zack Briesemeister; Travis S Barman; Charles E. Woodward; Mike Skrutskie; Jarron Leisenring

doi:10.1117/12.2313977

On-sky operations with the ALES integral field spectrograph

Jordan M. Stone, Andrew J. Skemer, Philip M Hinz, Zack Briesemeister, Travis S Barman, Charles E. Woodward, Mike Skrutskie, Jarron Leisenring

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

1 Scopus citations

Abstract

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.

Original language	English (US)
Title of host publication	Ground-based and Airborne Instrumentation for Astronomy VII
Editors	Luc Simard, Luc Simard, Christopher J. Evans, Hideki Takami
Publisher	SPIE
Volume	10702
ISBN (Print)	9781510619579
DOIs	https://doi.org/10.1117/12.2313977
State	Published - Jan 1 2018
Event	Ground-based and Airborne Instrumentation for Astronomy VII 2018 - Austin, United States Duration: Jun 10 2018 → Jun 14 2018

Other

Other	Ground-based and Airborne Instrumentation for Astronomy VII 2018
Country	United States
City	Austin
Period	6/10/18 → 6/14/18

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Keywords

Exoplanet Characterization
High-Contrast
Integral Field Spectroscopy

ASJC Scopus subject areas

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

Cite this

Stone, J. M., Skemer, A. J., Hinz, P. M., Briesemeister, Z., Barman, T. S., Woodward, C. E., Skrutskie, M., & Leisenring, J. (2018). On-sky operations with the ALES integral field spectrograph. In L. Simard, L. Simard, C. J. Evans, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy VII (Vol. 10702). [107023F] SPIE. https://doi.org/10.1117/12.2313977

On-sky operations with the ALES integral field spectrograph. / Stone, Jordan M.; Skemer, Andrew J.; Hinz, Philip M; Briesemeister, Zack; Barman, Travis S; Woodward, Charles E.; Skrutskie, Mike; Leisenring, Jarron.

Ground-based and Airborne Instrumentation for Astronomy VII. ed. / Luc Simard; Luc Simard; Christopher J. Evans; Hideki Takami. Vol. 10702 SPIE, 2018. 107023F.

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

Stone, JM, Skemer, AJ, Hinz, PM, Briesemeister, Z, Barman, TS, Woodward, CE, Skrutskie, M & Leisenring, J 2018, On-sky operations with the ALES integral field spectrograph. in L Simard, L Simard, CJ Evans & H Takami (eds), Ground-based and Airborne Instrumentation for Astronomy VII. vol. 10702, 107023F, SPIE, Ground-based and Airborne Instrumentation for Astronomy VII 2018, Austin, United States, 6/10/18. https://doi.org/10.1117/12.2313977

Stone, Jordan M. ; Skemer, Andrew J. ; Hinz, Philip M ; Briesemeister, Zack ; Barman, Travis S ; Woodward, Charles E. ; Skrutskie, Mike ; Leisenring, Jarron. / On-sky operations with the ALES integral field spectrograph. Ground-based and Airborne Instrumentation for Astronomy VII. editor / Luc Simard ; Luc Simard ; Christopher J. Evans ; Hideki Takami. Vol. 10702 SPIE, 2018.

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Access to Document

10.1117/12.2313977