Don Mickey (mickey@ahinahina.ifa.hawaii.edu)
Thu, 18 Feb 1999 18:08:39 -1000
Mark suggests that we take some darks with the IVM power turned off.
That is, turn off all the power to the telescope itself, except the
camera controllers. We can use the Photometrics camtest routine to
take the pictures. This test would confirm that it's our own noise
that's getting into the cameras. Possible suspects are the Bitbus
processors (100 kHz clock), or the DC-DC converters.
If this is pretty quiet, we might try it with the dome open & closed,
facing west & east, spar tracking, other instruments running or not,
and so on.
----Don Mickey <mickey@ahinahina.ifa.hawaii.edu>