The thinned chips offer a substantial advantage in quantum efficiency over
the thick chips, and this advantage is greater at bluer wavelengths.
Chapter describes the CCDs currently available at the ING telescopes,
and updates will be published regularly in Spectrum. Technical notes 92
and 93 give details of the next generation and the current generation of
CCD cameras respectively, and charatcteristics of operational cameras are
available on the World-Wide Web servers at Cambridge and La Palma.