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

	Date:		17 December 2004
	-----

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

	File Name:	2004.12.22.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

			THURSDAY -- 23 December 2004
			----------------------------
			D54 08:45-11:45
			D24 19:05-00:05
			CDS recovery at ~19:15 UT
			ESR flag enabled for CDS and LASCO
			SVM Reserve Time
			LASCO recovery at ~20:45 UT
			CDS & LASCO load

	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: 2004.12:22.17.00
		    end: 2004.12:23.17:00

	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: