MMTF: The Maryland-Magellan Tunable Filter

Details MMTF: The Maryland-Magellan Tunable Filter MMTF: The Maryland-Magellan Tunable Filter

2009-08-12

arxiv.org/abs/0908.1629v2

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

38 pages, 12 figures, 3 tables, now accepted for publication to the Astronomical Journal

Scientific paper

This paper describes the Maryland-Magellan Tunable Filter (MMTF) on the Magellan-Baade 6.5-meter telescope. MMTF is based on a 150-mm clear aperture Fabry-Perot (FP) etalon that operates in low orders and provides transmission bandpass and central wavelength adjustable from ~5 to ~15 A and from ~5000 to over ~9200 A, respectively. It is installed in the Inamori Magellan Areal Camera and Spectrograph (IMACS) and delivers an image quality of ~0.5" over a field of view of 27' in diameter (monochromatic over ~10'). This versatile and easy-to-operate instrument has been used over the past three years for a wide variety of projects. This paper first reviews the basic principles of FP tunable filters, then provides a detailed description of the hardware and software associated with MMTF and the techniques developed to observe with this instrument and reduce the data. The main lessons learned in the course of the commissioning and implementation of MMTF are highlighted next, before concluding with a brief outlook on the future of MMTF and of similar facilities which are soon coming on line.

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