Camera

The 1.5-meter Cassegrain spectrograph uses a semi-solid Schmidt camera with 160mm focal length. The optics are entirely of quartz so that is has usable transmission to the atmospheric cutoff. However, this camera requires that the front window of the CCD dewar be a field flattening lens. Thus, not all CCDs may be used with this camera. Currently it is only used with a Loral $1200 \times 800$ CCD. This camera gives a demagnification of 4.78 and a ``plate'' scale of $1.3^{\prime\prime}$ per $15\,\mu$ pixel with the Loral 1K CCD. A slower f/ ratio camera upgrade is also in progress. This will provide a finer pixel sampling and a better match to the larger CCD.