Subject: JEM-X Monday Meeting 2007-10-11
Date: Thu, 11 Oct 2007 11:45:57 +0200 (MEST)

Participants: SB, NL, CBJ, JC, CAO, NJW.

INTEGRAL status (SB): It was noted with pleasure that the AWG has
recommended a prolongation of INTEGRAL until at least 2012.
SPC will make a decision at the end of November 2007.

JEM-X status (SB): Nothing much to say. JMX2 was active during the Crab
calibration and behaved as expected. No hotspot activity.

Crab calibration (SB, CBJ, CAO): The analysis at ISDC showed too low
count rate for JMX2 during the Crab staring observations. This was,
however, due to heavy greyfiltering and consequently bad gain
determination.  A new IC gain history table with better gain
correction is being made by CAO.  A new IC IMOD epoch is necessary
for JMX2 with new energy reference channels to bring the Xe line
back to 29.6 keV is required.

The JMX2 spectrum of the Crab on-axis derived by CBJ has the usual
slope, but the intensity is perhaps 10% higher than the reference
spectrum obtained a long time ago.
It has been noticed that the 'on-axis' position for JEM-X is 0.5 arcmin
away from the IBIS 'on-axis' position.

Coordination meeting (SB): We should follow up on the results for the
absolute calibration of the Crab spectrum. We also need a presentation
on the OSA7 improvements.

OSA status and testing (NL, JC): An error in j_ima_iros in the coordinate
system rotation has been revealed and now there is a better consistency
between JMX1 and JMX2. A better determination of the parameters is
underway and will probably be ready by the coordination meeting.
These parameters influence both the flux determination and the position
determination so these must be considered simultaneously.

JC has noticed that the OBS_RES data structure does not contain the new
columns for JMXi-SRCL-RES. We must make an SPR for this. There are other
small things that must be corrected. We must start planning OSA7.1.

/NJW