Subject: HRI-SIM TV2 Flash report Date: Tue, 27 Aug 2002 23:17:41 -0400 From: Dennis Wellnitz Hi all, Today (Tuesday, August 27), we met briefly at 9:00 am MDT to plan the day's activities, and then immediately commenced the IR spectrometer calibration at the "warm" bench temperature of 142 K. We started with Krypton and Argon lamps for wavelength calibration at this temperature, which appear to be very consistent with the measurements at 136 K bench temperature, validating Jim Baer's Code V model of shifts of registration with changing SIM bench temperature. We continued with measurements of the JPL black body at various temperatures, which provided lots of good data. At the highest JPL black body temperature we placed a silica window in the beam path to reduce the long-wavelength intensity, with very interesting results; we hope that this will help us to understand some of the shorter wavelength structure in the black body spectra. We also tested the arrangement for measuring the meteorite sample, and from those tests believe that we will be able to get good data on the meteorite sample when we do measure it. We then measured the tungsten lamp with the sapphire window with various NDs and with the silica window, once again with interesting results. As the time was approaching 9 pm MDT, we decided to call it a day, and will meet at 9:00 am tomorrow to plan the day's work, which will presumably complete calibration at this bench temperature. We took 1486 IR-FPA images today, a new record for a single day. While pursuing this effort, some of us worked on understanding some unusual features of the CCD data taken yesterday, and are making progress in understanding what is happening. Please let me know if you have any comments or questions. If you would prefer not to receive these Flash reports on HRI-SIM TV2, please let me know. Dennis