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XMM-Newton TTD Meeting
6-7th of June 2001

M. Casale

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Eclipse season Autumn 2001 (1)

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Eclipse period: 31-08 (REV-317) to 14-10 (REV-339)

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Max duration: 47 minutes (including penumbra)

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Timing: the eclipse will occur after Perigee; min 0.5 h to max 56 min (at the end of the eclipse season)

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Base-line for eclipse operations being outlined with the MOC: meeting foreseen on 12-06

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Target: keep start of instrument Observations (i.e. close cal obs) at Perigee + 4.5 h as per last Spring eclipse season despite additional difficulties: ­ less time for instrument operations; ­ more complex sequence of post eclipse SVM activities ­ longer activation time for EPIC instruments (see below)
LEICESTER : 6th of June 2001

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Eclipse season Autumn 2001 (2)

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Principles of EPIC eclipse operations: ­ the strategy implemented during the last eclipse season (after correction of NCR-83 / PN heater anomaly) worked fine and will have to be adopted during next eclipse season:

· temperature boosting at eclipse end via Red. Substitution heater · modification to therm. control setting: min_PW = 100, max_PW = 220

­ Additional protection during PN switch-on to prevent hybrid configuration in case of GS loss: add TT command for transition to Safe mode, if activation can not be nominally completed

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Major differences in switch-on / activation procedures: ­ new EPDH code version J (time-out task): will imply full re-upload of the code (14 additional minutes) ­ new EMDH code version J (time-out task): same as above (20 additional minutes) ­ Split between manual / automatic operations still being defined
LEICESTER : 6th of June 2001

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Single Bore-sight implementation (1)

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Status: new SIAM matrix (version 9) delivered on 25-05-01)

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Implementation milestones: 1 definition/validation of OM grism modes for start of AO-2 2 implementation/re-commissioning of EPIC-MOS window modes (definition of new clock sequences, implementation into ops. DB, validation/testing, final implementation into activity DB) 3 re-definition of OM window position for standard "Rudi-5" exposures normal & fast (validation/testing, final implementation into activity DB)

- deadline for milestone 1 above: end of July for final implementation in RPS by start of AO-2 (beginning of September) - deadline for milestones 2 & 3: end of March 2002, at the time the AO-2 database will start to be expanded
LEICESTER : 6th of June 2001

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Single Bore-sight implementation (2)

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Implementation Plan: draft version circulated on 04-06

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Future activities: ­ OM grism mode testing in REV-283 (26-06-01); will also give the opportunity to check PN / RGS pointing with new bore-sight; data acquisition in Full Frame mode for MOS-1/2 (could help for definition of new windows) ­ Definition of MOS-1 & 2 clock sequences by EPIC Team for LW / SW / Timing modes: due date: TBD (is end of July acceptable ?) ­ Import / implementation into Ops DB of new MOS sequences: due date: tentatively end of August 2001 ­ MOS-1&2 window modes functional test (during close_cal / slew: no impact on science time). Tentatively September 2001 ­ Performance test (all instruments): tentatively Nov-Dec 2001 ­ Activity DB modification / Single bore-sight SIAM operational: by end of February 2002 (whole system in line with single boresight for both real-time and off-line operations)
LEICESTER : 6th of June 2001

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