-- RunaBriguglio - 03 Aug 2011

CCD Linearity curve

In the following plot the CCD response is shown vs integration time. Solid dots are experimental data, red line is the fit. The dashed line is the departure from linearity (%). For the fit calculation, the first 5 point only have been used.

The curve is valid only for non bright objects, i.e. exp time larger than a couple of seconds. For shorter exposure time, the Correlated Double Sampling (CDS) implemented on board the Pisces electronics artifacts the reading on bright sources.

No further documentation was found about Pisces CDS (if you find it, you are encouraged to upload!)

• pisces_linearity.jpg: