McDonald Observatory

2.7m Telescope

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Cassegrain f/17.7
Large Cass Spectrometer (LCS)		click to enlarge (new window)
	Scientist Dr. Anita Cochran (512) 471-1471 anita@astro.as.utexas.edu Large Cassegrain Spectrograph main page A low-to-moderate-resolution spectrometer (R = 600-2,500) for faint object work available with TI1 and CC1 CCDs. Various gratings provide wavelength coverage from 0.3 to 1.1 microns. The LCS has long slit (150 arcsec) capability and CCD-based guiding and acquisition. Limiting magnitude mv = 20. The TI1 CCD has better QE at all wavelengths but suffers from severe fringing for wavelengths redward of 6,000 Å; thus for red work, CC1 is the better choice. Both chips can be used all the way to the atmospheric cutoff, but TI1 is better than CC1 in the blue.

17 September 2003
Astronomy Program · The University of Texas at Austin · Austin, Texas 78712
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