Subject: JEMX Monday Meeting 2005-02-28

Present: CAO, NL, JC, CBJ, SB, NJW

JEM-X status: As usual.

      Burst localized from REV 289
      NB: Check IBAS alerts. We seem not to get what we should have got.
      
      IPF data is missing ~a day of data due to disk overrun. The disk
             has now been emptied up to Feb. 1, 2005 (we have a backup
             at DNSC).
             
OSA5: j_ima_mosaic is now running both on j_ima_iros images and
               j_ima_basic_recon images. NL showed example around
               galactic center (REV 60) with a couple more sources
               in iros result.
      j_ima_iros. A bug has been fixed and it now runs through all
               test cases. Seems mature for a first delivery to ISDC
               even though some issue on keywords and flux normalization
               are still to be solved.
               SB has been looking into programming by ds9 and confirmed
               that the source flux is proportional to the integrated
               peak ('volume' of peak). At large off-axis angles there
               are some discrepancies that can be attributed to imperfect
               collimator modelling and/or radius limit on the detector.
               SB has used the HK count rates as reference.
               
      Misalignment matrix: CAO has collected a large number of SWIDs for
               JMX1 and JMX2. The JMX1 case has been run with old matrix
               (for reference purpose) and unity matrix. The JMX2 case
               will be ready very soon.
               
               The misalignment correction is intrinsic to j_ima_iros
               and it will stay that way for the time being. First it
               will cause trouble changing that and secondly we may end
               up in a situation where different misalignment matrices are
               required for j_ima_basic_recon and j_ima_iros.
               
Analysis results: CBJ has introduced the dead anodes in the imaging
               software and seen no effect of this on the conclusions for
               the collimator tilt.
               
               V 0332 has faded a lot.
               
               SGR results from REV 225. SB has looked at the possibilities
                   for deriving the fluence by the buffer loss information.
                   That is not possible, so we need the software patch for that.

SDAST meeting 14-15 March, 2005: NL, SB, CAO, and NJW will participate
               from DNSC. CBJ checks to see if there is a conflict with
               another meeting.


/NJW
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Niels J. Westergaard
Danish National Space Center
Juliane Maries Vej 30, DK 2100 Copenhagen O
Phone: +45 35325705; FAX:  +45 35362475