cooling |
![]() |
![]() |
the maximum allowable dark current for ULTRACAM is 0.1 e-/pixel/s |
![]() |
to achieve this target, the Marconi 47-20 CCD must be cooled to below 233 K |
![]() |
this level of cooling can be obtained using a Melcor 3-stage thermo-electric ("Peltier") device and water cooling |