+----------------------------------------------------------+ | NICMOS | STScI Analysis Newsletter | 05 February 2007 +----------------------------------------------------------+ Visit the NICMOS web site http://www.stsci.edu/hst/nicmos "New in the Last 45 Days" for all new information about NICMOS. CONTENTS: -NICMOS Recovery and Return to Science +----------------------------------------------------------+ NICMOS Recovery and Return to Science NICMOS is recovered and back in normal operation following the safing of HST on January 27, 2007. The NICMOS NCS cooldown was started on Monday January 29 and proceeded nominally, with the instrument cooled down and ready to begin initial operations by Friday February 2. The initial checkout of all the electronic and mechanical systems of the instrument showed nominal behaviour, including normal operation of the filter wheel which was verified by examining the filter wheel motor currents as well as inspection of flat fields taken through a range of different filters. The count rates in the flat fields, as well as the bias and dark current properties, show no significant change in any of the three cameras compared with similar data obtained before the safing. Overall, NICMOS appears to have settled down in a similar way to its behavior after previous HST safing events, and no unusual problems have been uncovered in any aspect of its operation so far. Science programs have begun executing and preliminary results also reveal no unexpected behavior so far. More detailed analysis of the calibration data will continue as further data are obtained; if any changes are found in the more detailed analysis then those will be accounted for by delivering new reference files according to the usual procedure. A more detailed report will be distributed later once analysis of all the data has been completed. For more detailed information and updates, please consult the NICMOS webpages: http://www.stsci.edu/hst/nicmos/. +----------------------------------------------------------+ | Help: help@stsci.edu +----------------------------------------------------------+ | To subscribe or unsubscribe to the STAN, send a message | to majordomo@stsci.edu with the subject line blank and | the following in the body: [un]subscribe nicmos_news +----------------------------------------------------------+ | The Space Telescope Science Institute is operated by the | Association of Universities for Research in Astronomy, | Inc., under NASA contract NAS5-26555. +----------------------------------------------------------+
