Links
[1] http://www.ctio.noao.edu/noao/node/13472
[2] http://www.ctio.noao.edu/noao/content/TS4-Instrument-Overview
[3] http://www.ctio.noao.edu/noao/content/TS4-ETC-and-Sensitivity
[4] http://www.ctio.noao.edu/noao/content/TS4-SV-Sky-Rotator-Vector
[5] http://www.ctio.noao.edu/noao/content/TS4-Slit-Assembly
[6] http://www.ctio.noao.edu/noao/content/TS4-Spectral-Format