1.5mRC 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 x 800 CCD. This camera gives a demagnification of 4.78 and a "plate'' scale of $1.3" per 15micron 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.