MIT/LL #3 CCID-20 W67C2 TEST SUMMARY
************************************ Revised 21/10/98 Started
16/9/98 J.R.BARTON MITLL3_TEST_SUMMARY.TXT CCD DESCRIPTION: This
is the third 2Kx4K 15 micron pixel MIT/LL CCD received as part
of the UofH contract with Lincoln Labs (the first chip being a
setup grade, the second being the engineering grade W20C2, now
on the telescope as MITLL2). MITLL3 is a deep depletion, high
resistivity CCD with a reported thinned thickness of 40 microns.
SUMMARY OF CHARACTERISTICS OF INTEREST TO OBSERVERS
*************************************************** CAUTIONARY
NOTES MITLL3 has been a difficult CCD to set up and several
compromises have been made to provide generally acceptable
operation. These are discussed in the appendix. Observers need
to know that.... * Hot pixels cause saturated columns and weaker
vertical trails in bias frames. In long dark frames weaker hot
pixels may also saturate pixels locally about the hot pixel
site, faint hot pixels become more prominant and some that