Design and construction of the IMACS-IFU, a 2000-element integral field unit

Details Design and construction of the IMACS-IFU, a 2000-element integral field unit Design and construction of the IMACS-IFU, a 2000-element integral field unit

2004-08-24

arxiv.org/abs/astro-ph/0408449v1

Astronomy and Astrophysics

Astrophysics

10 pages, 7 figures, 1 table. Proceedings for SPIE poster 5492-175 of SPIE Symposium "Astronomical Telescopes and Instrumentat

Scientific paper

10.1117/12.549803

The IMACS-IFU is an Integral Field Unit built for the IMACS spectrograph at the Magellan-I-Telescope at Las Campanas Observatory. It consists of two rectangular fields of 5 by 7 arcseconds, separated by roughly one arcminute. With a total number of 2000 spatial elements it is the second largest fiber-lenslet based IFU worldwide, working in a wavelength range between 400 and 900 nm. Due to the equally sized fields classical background subtraction, beam switching and shuffling are possible observation techniques. One particular design challenge was the single, half a metre long curved slit in combination with a non telecentric output. Besides the construction some preliminary results are described.

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