Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20915413m&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #154.13; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
We describe two classes of experiments in the operation and calibration of the Infrared Multi-Object Spectrometer (IRMOS). This instrument employs a novel approach to slit definition with a 848x600 element array of individually controlled mirco-mirrors. Now available as a facility instrument at KPNO, IRMOS provides resolutions of 300, 1000, and 3000 in the J, H, and K near-infrared bands over a 3x2 arc minute field on the Mayall 4m telescope. We have extensively experimented with a "point and click" slit definition observing mode in which the observer interactively places and adjusts slits on an image of the field of interest. We discuss observing strategies to improve calibration and background removal. We have also started the exploration of a full integral field mode using Hadamard transform slit masks and will present reconstructed images and extracted spectra from the resulting data cubes.
IRMOS has been supported by NASA's JWST project, NASA/GSFC, STScI Director's Discretionary Research Fund, and KPNO.
Greenhouse Matthew A.
MacKenty John W.
Ohl Raymond G.
Robberto Massimo
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