30 March 1996 Rev. 1 05 May 1996 Rev. 2 21 May 1996 SUMER Weekly Science Leader (Version until summer 1998) --------------------------- Purpose: Provide science planning and coordination support to the resident SUMER team at the Experiment Operation Facility (EOF) at GSFC. The overall science planning responsibility at the EOF rests with P. Lemaire (Deputy: U. Schuehle). Command and data coordination will be done by N. Morisset. The weekly science leader has the option of participating in the science observations performed during his/her week. Tasks: * Plan and coordinate one week of SUMER observations taking into account the overall SUMER observation strategy. * Work with the observers (selected for the week in question). * Review observation plans with observers and technical SUMER team, if needed. * Draft plan for the week and discuss it at the SOHO weekly meeting on Friday. * Prepare an Instrument Activity Plan (IAP) for the week and submit it to the SOHO Science Operations Coordinator (SOC). * Supervise the command generation for the selected observation. * Attend the daily SOHO planning meetings. * Decide on pointing for the scheduled observations (in cooperation with observers and JOP leaders). * Operate the SOHO/SUMER planning tool (incl. pointing). * Prepare observation plans with the support of the SUMER team and supervise their execution. * Write daily summary reports. The format should be as follows: Open a file named 'Week_xx_96.log' and enter date, time, observer and some remarks on each SUMER observation (e.g., 28 March 96 00:30 Curdt Expl. ev. sit & stare, 703, 1393, 1401). At the end of week send file to Lemaire and Schuehle. * Provide PI with short assessment report at the end of the week. Activity Plan: * Stay at EOF for at least two weeks, preferably two or three times per year. * Arrival on Monday the week before the scheduled week at the latest. * Preparation and input to weekly meeting has to be performed the week before the scheduled week. * Work together with the Weekly Science Leader of weeks before and after your turn as well as with the resident SUMER team. Rev. 3 26 May 1999 Modifications Introduced Because of Campaign-type Operation. --------------------------------------------------------------- In order to extent the absolute life of the SUMER detectors, the instrument will only be operated in certain time intervals - called campaigns. Also the resident SUMER team at the EOF is very much reduced. P. Lemaire, U. Schuehle and N. Morisset have left. Chris Maroney took up Nicolas Morisset's tasks and is available for operating SUMER in those periods when the instrument is observing. (Chris will work for CDS at other times; special appointment required.) Unfortunately, this reduced support by the SUMER resident team will make the involvement of SUMER planners, who are not members of the core SUMER team much more difficult. On the other hand, we need their ideas and help. Consequently, we will experiment with a scheme, whereby a SUMER core team member will be present at the EOF for two weeks, but be planner only for the first week. The second week will be handled by an 'outside' SUMER planner in the usual manner, but with the core team member available for advice if needed. The reports should be sent to wilhelm@sumop1.nascom.nasa.gov. With these modifications, the old work plan dated 21 May 1996 can still be applied. It should, however, be added that both detectors, A and B, of SUMER have nearly reached their limits of further gain increases. The detector wear is mainly caused by the total counts. Hight count-rate sequences of long duration should therefore be critically assessed before their execution. They should only be performed if there is a sound scientific justification. It should also be noted that the azimuthal scan mechanism of the telescope can be used in its high-current mode for pointing and rastering, but unnecessary movements should be avoided. The solar rotation compensation only works accurately, if the pole angle of the Sun (to be found, for instance, in the Nautical Almanach as heliographic latitude B_0 (in degree)) is loaded into the SUMER onboard parameter list on a weekly basis during campaigns. This can be done by 'change_global_param 135 x.x' from SUMOP2 or 'change_global_float 135 x.x' from SUMOP3.