NASA NTRS · 20140017408
Co-Phasing the Large Binocular Telescope:
Abstract
The Large Binocular Telescope Interferometer is a NASA-funded nulling and imaging instrument designed to coherently combine the two 8.4-m primary mirrors of the LBT for high-sensitivity, high-contrast, and high-resolution infrared imaging (1.5-13 micrometer). PHASECam is LBTI's near-infrared camera used to measure tip-tilt and phase variations between the two AO-corrected apertures and provide high-angular resolution observations. We report on the status of the system and describe its on-sky performance measured during the first semester of 2014. With a spatial resolution equivalent to that of a 22.8-meter telescope and the light-gathering power of single 11.8-meter mirror, the co-phased LBT can be considered to be a forerunner of the next-generation extremely large telescopes (ELT).
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Defrere, D., Hinz, P., Downey, E., Ashby, D., Bailey, V., Brusa, G., Christou, J., Danchi, W. C., Grenz, P., Hill, J. M., Hoffmann, W. F., Leisenring, J., Lozi, J., McMahon, T., Mennesson, B., Millan-Gabet, R., Montoya, M., Powell, K., Skemer, A., Vaitheeswaran, V., Vaz, A., Veillet, C.. 2014-06-22. Co-Phasing the Large Binocular Telescope:. https://ntrs.nasa.gov/citations/20140017408
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