CES parasitic light measurements

CES parasitic light measurements are performed taking a long exposure with the shutter open but with the fibre covered by the "dust cover" and the calibration screen from the injection side at the telescope.This exposure should reveal whether there is parasitic light within the CES spectrograph, possibly originatining from the electronics inside the room.

Parasitic light measurements (normal mode, binning XxY=1x1):

14 July 2006 9 ± 3 e/px/hr

Last update: 14 July 2006 Comments to ls-ces@eso.org