Clio has a direct vision prism that creates a low resolution spectrum of the object. Use the following prescription to setup the spectral mode:

1. Use the strip mode, unless the object is wide enough to require full mode.
2. Place the object at approximately row 260 on the Clio detector. (row 260 will correspond to 2 microns for the spectral mode).
3. Insert the "medium"slit. This is a 0.5" (16 pixels) slit. Use the filter wheel GUI to do this.
4. Check that the object is centered on the slit. Set up a nod vector and test it if uncertain.
5. Insert the prism using the filter wheel GUI.
6. Take spectra. L band sky will typically saturate for t>4000 ms.

Images below show estimated SNR for test data taken on May 2010. Rows 50-100 are the K band portion of the spectrum. Rows 150-450 are the 3-4.1 um portion of the spectrum. M band can be seen at rows 550-650.