4mRC Camera & CCD

Only one camera and CCD combination is presently used with the R-C spectrograph: the Blue Air Schmidt (BAS) and Loral 3K CCD (L3K). The Air Schmidt camera is a field-flattened Schmidt camera of 229 mm focal length and 229 mm clear aperture (f/1). This camera is used exclusively with the Loral 3K CCD, which together with its special dewar, forms an integral part of the camera.

The Local 3K is a thinned 3K×1K CCD with 15µ pixels. The CCD has a two layer AR coating and is UV flooded to maximise its QE over a wide range of wavelengths.

The demagnification with the BAS is a factor of 5.1 which results in a spatial scale of 0.50 arcsecond per 15micron pixel. The full field of view illuminated by the 50mm long slit is approximately 656 pixels or 328 arcseconds.

Michael Keane 
Jack Baldwin 

Updated on June 29, 2021, 12:08 pm