UVCS MISSION LOG 
				    ----------------

	Date:		12 July 1996	
	-----

 	GSFC Time:	09:30 - 21:00
	----------

	File Name: 	96.07.12.a.log
	-----------

	Compiled by:    M. Romoli
	------------

	UVCS Activity:  StimPulse Test
	-------------- 	Check on polarizer and grating mechanisms
			Plume study above North pole
                        
                        
      	SOHO Activity:  None
	-------------- 

	EOF Staff:      M. Romoli: Lead Scientist  
	----------	L. Gardner
			A. Ciaravella
	 		S. Giordano
		        S. Fineschi
			
 
       Science  files:    

       Houskeeping files: 96.07.11.13:20:45.hk.log

       S/C AUX files:     96.07.11.13:20:38.aux.log

       Command file:      96.07.12.15:25:33.cmd.log

       NRT-s cmd session: 16:00 - 22:00 - (UT) 

	
       Activity:

        1) StimPulse Test

        Sequence: 
 
        Purpose: Does a StimPulse XDL exposure produce spectral wings?
		 The answer is no.
                  
        Duration: start: 96.07.12.15:00
                  end:   96.07.12.17:30
 
        ONUMs = 1080  (2 exp. - by mistake on the synoptic ONUM)
		1081  (6 exposures)
 
        Instrument configuration:
 
                - Detectors off and at HV level 100
 
                - LYA mask: Stim_Lya in slot # 5
                - OVI mask: Stim_OVI in slot # 5
 
        Fits Files:


    q96.07.12.14:05:36.lya.dat   This fits contents the synoptic also !!
    q96.07.12.14:05:36.ovi.dat      "               "            "
    q96.07.12.16:39:36.lya.dat
    q96.07.12.16:39:36.ovi.dat

        2) Check on Polarizer and Grating mechanisms

	Purpose: The polarizer mechanism at low values of the
		readout (< 4000) draws more current from the supply
		The test aims to verify that this effect leaves the
		mechanism power supply level within safe limits.
		The result shows that the effect is not monotonic with
		lowering the polarizer position.
		It was found that 3000 minimize this effect.

		 Test on the capabilities of driving the gratings at 
		extreme positions.
		OVI grating 45000 - 235000
		Lya grating 40000

	Duration: start: 96.07.12.17:30
		  end:   96.07.12.18:30 


        3) Polar Plume study above the North pole

        Sequence: U_GenPurpose:MirScan
 
        Purpose: Observation of Lya profile and OVI1032 profile
		 for plasma diagnostics in plume and interplume
		 regions.
                  
        Duration: start: 96.07.12.18:30
                  end:   96.07.13.09:00
 
        ONUMs = 1082  (84 exposures)
 
        Instrument configuration:
 
                - Pointing:  Sun Center
 
                - Roll: North PA=0
 
                - Mirror/Occulter: 1.5, 1.8 Ro
                                   
                - LYA Slits:  50 um
                - OVI Slits:  75 um
 
                - LYA GRTPOS: 100000 
                - OVI GRTPOS: 182000 
 
                - LYA mask: Lya_Plume in slot # 4
                - OVI mask: OVI_Plume in slot # 4
 
        Fits Files:


	q96.07.12.18:31:01.lya.dat
	q96.07.12.18:31:01.ovi.dat
	q96.07.12.18:31:01.vld.dat