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

	Date:		30 March 2004
	-----

 	Last revision:	02 April 2004 (Wu)
	--------------

	File Name: 	2004.04.01.a.log
	-----------

	Compiled by:	R. Wu
	------------

	UVCS Activity:	UVCS in Modified Hard Safe configuration for Keyhole
	--------------	

	SOHO Activity:	Received via email from SOC on Friday, 
	--------------  26 March 2004 16:23:53 UT
	
	30 MARCH 2004 MM/SK/Roll TIMELINE

	Last Update:  23 March 2004 18:30 UT
	Standard Disclaimer:  All times are in UT and are estimates.
	Total Fuel Usage = 0.0698 kg [see below for updated amount]
	OCD (offpoint flag, SVM times, ESR flags) due Thursday 25 March
	SORR on Friday 26 March at 16 UT
	Limit violation sheets for safing due by 19 UT Monday 29 March

	MONDAY -- 29 March 2004
	-----------------------
	D54 0730-1245
	D24 2245-0050
	UVCS already safed
	LASCO safes at 11 UT
	CDS safes at ~23 UT
	ESR flag disabled for CDS and LASCO
	SVM Reserve Time

	TUESDAY -- 30 March 2004
	------------------------
	D34 0115-0615
	D54 0725-1025
	D24 1450-0050
	No CELIAS STOF safing
	SWAN safed by FOT, remove SWAN from ESR warning flag list
	MDI loop opened by FOT with warning
	Experiment offpoint flag function disabled
	SK/MM - SK burn, MM burns (3 segments), 26 minute roll
	Burns should be complete by ~17 UT
	Experiment offpoint flags enabled for LASCO and MDI
	MDI loop closed by FOT after asking permission
	SWAN recovered by FOT, return SWAN to ESR warning flag list - 2
        hours after last burn, then do recovery load
	NRT available at ~19 UT

	WEDNESDAY -- 31 March 2004
	--------------------------
	D15/D27 1815-0100
	CDS recovery ~18:30 UT
	ESR flag enabled for CDS and LASCO
	SVM reserve time after CDS done
	LASCO recovery after SVM
	NRT for CDS & LASCO after LASCO recovery

	THURSDAY -- 1 April 2004
	------------------------
	D65/D66 0825-1225
	D43/D46 2105-2350
	Recovery here if not done on Wednesday

			Received via email from SOC on Friday, 
			26 March 2004 18:13:25 UT

	Total Fuel Usage = 0.0759 kg

	EOF Staff:	R. Wu: Lead Scientist
	----------	R. Wu: Commander
			Y.-K. Ko
			M. Uzzo

	Command file:	No Commanding

	Activity:
	---------

	1) UVCS in Modified Hard Safe Configuration

	Sequence: 

	SCI_SPEC: Following completion of Science Observations, UVCS 
		  is placed into a modified Hard Safe configuration in 
		  preparation for the SOHO Keyhole Period.  

		  Detector High Voltage is ramped down and then turned off, 
		  OVI Slit is set to 100 microns, instrument is rolled to 
		  the nominal East (35156 Engineering Units), and Mirror
	          is moved to 1.5 Solar Radii with 1.5 mm overocculting.  
		  UVCS Aperture Door is also closed 708 steps, Internal 
                  Mirror / Occulter Heater set to 100% duty cycle.  Internal
		  Spectrometer Heater is not turned on.  In addition to
		  "traditional" Hard Safe configuration, UVCS OVI and VLD
		  Detector Power are turned off.

		  FOT use ESR Limit Table, and turn on TSU Substitution 
		  Heater (Circuit #84) and set duty cycle to default 60%. 
		  Experiment Offpoint, and ESR Flags disabled for Keyhole.

	OBS_PROG: 

	SCI_OBJ:  

	OBJ:      

	CMP_NAME: 

	CMP_NUM:  

	Duration: start: 2004.04.01.17:00
                    end: 2004.04.02.17:00

	ONUMs =	44767

	Instrument configuration:

		- Pointing:  Sun center

		- Spacecraft Roll:  0 Degrees

		- Roll: 90 Degrees (35156)
 
		- Mirror/Occulter:  1.5 Ro
                                    1.5 mm overocculting

		- LYA Slit:    50 um
		- OVI Slit:   100 um 

                - LYA GRTPOS: 128000
                - OVI GRTPOS: 229000

		- LYA HIGH VOLTAGE RAMPED DOWN DOWN AND POWERED OFF
		- OVI HIGH VOLTAGE RAMPED DOWN DOWN AND POWERED OFF
		- VLD HIGH VOLTAGE RAMPED DOWN DOWN AND POWERED OFF

		- LYA DETECTOR POWERED OFF
		- OVI DETECTOR POWERED OFF
		- VLD DETECTOR POWERED OFF

                - OVI mask:   OVI_Syn_230 in slot 1

	Fits Files:

GAP between 04/01/04|21:05:25(15225) and 04/01/04|21:06:46(15363)