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

	Date:		24 March 2005
	-----

	Last revision:	25 March 2005 (Wu)
	--------------

	File Name:	2005.03.25.a.log
	----------

	Compiled by:	M. Uzzo
	------------

	UVCS Activity:	UVCS Recovery from a Modified Hard Safe Configuration 
	-------------	to a Soft Safe Configuration
			Load OVI Detector Mask OVI_sp1_164 into OVI slot 4
			UVCS Stimulus Pulse Test
			UVCS in Soft Safe Configuration

	SOHO Activity:	 
	--------------	

	EOF Staff:	M. P. Miralles: Lead Scientist
	----------	Y.-K. Ko 
			M. Uzzo: Commander, Planner

	Command file:  05.03.25.15:19:19.cmd.log	

	Activity:
	---------

	1) UVCS Recovery from Modified Hard Safe Configuration

	Sequence: Manual

	SCI_SPEC: UVCS is recovered from Hard Safe Configuration into a Soft 
		  Safe configuration in order to allow UVCS temperatures to 
		  return to nominal.  
		  
		  OVI Detector powered on.
		  
		  Detector High Voltage remains ramped down and turned off
		  OVI Slitwidth is 100 microns, instrument is rolled to the 
		  nominal WEST (35156 Engineering Units), and Mirror / 
		  Occulter is set at 1.5 Solar Radii with 1.5 mm 
		  overocculting.  UVCS Aperture Door is opened at this time.
		  Internal Mirror / Occulter Heater Heater set to 0% duty 
		  cycle.  XDL Detector Thresholds set.

		  FOT told to continue to use UVCS ESR Limit Table.

		  Expected Limit Violation sheets submitted to FOT via SOC
		  for any expected limit violations during this time.  

		  ESR Flag and Offpoint Flag are enabled.

	OBS_PROG: 

	SCI_OBJ:  

	OBJ:      

	CMP_NAME: 

	CMP_NUM:  

	Duration: start: 2005.03.25.16:40
                    end: 2005.03.25.16:59

	ONUMs =	

	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: 223500

		- OVI HIGH VOLTAGE RAMPED DOWN DOWN AND POWERED OFF

                - OVI mask:   OVI_str_164_225 in slot 6

	Fits Files:


	2) UVCS Stimulus Pulse Test

	Sequence: Manual

	SCI_SPEC: 

	OBS_PROG: 

	SCI_OBJ:  

	OBJ:     

	CMP_NAME:

	CMP_NUM:

	Duration: start: 2005.03.25.16:59
                    end: 2005.03.25.17:03

	ONUMs =	22205 (2 exps)

	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: 223500

		- OVI HIGH VOLTAGE RAMPED DOWN DOWN AND POWERED OFF

		- OVI mask:   msk_000303_OVI in slot 3

	Fits Files:

q05.03.25.16:58:08.ovi.dat

	3) Thermal Equilibration of UVCS in Soft Safe Configuration

	Sequence: none

	SCI_SPEC: UVCS is recovered from Hard Safe Configuration into a Soft 
		  Safe configuration in order to allow UVCS temperatures to 
		  return to nominal.  
		  
		  Detector High Voltage remains ramped down and turned off
		  OVI Slitwidth is 100 microns, instrument is rolled to the 
		  nominal EAST (35156 Engineering Units), and Mirror / 
		  Occulter is set at 1.5 Solar Radii with 1.5 mm 
		  overocculting.  UVCS Aperture Door is opened at this time.
		  Internal Mirror / Occulter Heater Heater set to 0% duty 
		  cycle.		  

		  FOT told to continue to use UVCS ESR Limit Table.

		  Expected Limit Violation sheets submitted to FOT via SOC
		  for any expected limit violations during this time.  

		  Experiment Offpoint and ESR Flags enabled.

	OBS_PROG: 

	SCI_OBJ:  

	OBJ:      

	CMP_NAME: 

	CMP_NUM:  

	Duration: start: 2005.03.25.17:03
                    end: 2005.03.26.15:00

	ONUMs =	22205

	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: 223500

		- OVI HIGH VOLTAGE RAMPED DOWN DOWN AND POWERED OFF

		- OVI mask:   msk_000303_OVI in slot 3

	Fits Files: