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

	Date:		17 December 2004
	-----

	Last revision:	21 December 2004 (Wu)
	--------------

	File Name:	2004.12.21.a.log
	----------

	Compiled by:	M. Uzzo, R. Wu
	------------

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

	SOHO Activity:	Received via email from SOC, Friday, 
	--------------	17 December 2004 16:17 UT:
	
			21 DECEMBER 2004 SK/MM/Roll TIMELINE

			Last Update:  17 December 2004 16 UT
			Standard Disclaimer:  All times are in UT and are 
			estimates.
			Total Fuel Usage = 0.37649 kg
			OCD (offpoint flag, SVM times, ESR flags) due Thursday 
			16 December
			SORR on Friday 17 December
			Limit violation sheets for safing due by Monday 
			morning 20 December

			TUESDAY -- 21 December 2004
			---------------------------
			D43/D46 05:30-08:00
			D54 08:35-16:00
			D24 15:45-19:30
			D34 21:35-02:30
			SOC here by 11 UT
			CELIAS STOF safing using CEL_ESR_SAFE.DEL
			SWAN safed by FOT, remove SWAN from ESR warning flag 
			list
			MDI loop opened by FOT with warning (~11:20 UT)
			Experiment offpoint flag function disabled
			~12 UT SK/MM/Roll - 50 minute SK, 101 minute MM, 26 
			minute roll
			Burns should be complete by ~15 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 
			SWA041217141.DEL
			CELIAS STOF recovery 6 hours after burn using 
			CEL9_RECOVER.DEL

			WEDNESDAY -- 22 December 2004
			-----------------------------
			D54 08:40-12:20
			We lost D14

	EOF Staff:	R. Wu: Lead Scientist, 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, all UVCS 
		  Detector Power are turned off.

		  FOT use ESR Limit Table, TSU Substitution Heater (Circuit
		  #84) powered on.  Experiment Offpoint, and ESR Flags 
		  disabled for Keyhole.

	OBS_PROG: 

	SCI_OBJ:  

	OBJ:      

	CMP_NAME: 

	CMP_NUM:  

	Duration: start: 2004.12:21.17.00
		    end: 2004.12:22.17:00

	ONUMs =	46977

	Instrument configuration:

		- Pointing:  Sun center

		- Spacecraft Roll:  180 Degrees

		- Roll: 270 Degrees (35156)

		- Mirror/Occulter:  1.5 Ro
				    1.5 mm overocculting

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

                - LYA GRTPOS: 128000
                - OVI GRTPOS: 177596

		- 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_178 in slot 2

	Fits Files: