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

	Date:		17 February 2009
	-----

 	Last revision:	23 February 2009 (Wu)
	--------------

	File Name: 	2009.02.19.a.log
 	----------

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

	UVCS Activity:	Return UVCS to Modified Hard Safe Configuration from
	--------------	Soft Safe Configuration due to loss of DSN station
			UVCS in Modified Hard Safe Configuration

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

	EOF Staff:      L. Gardner: Lead Scientist
	----------	M. Uzzo: Commander, Planner
			R. Wu

	Command file:	09.02.19.12:36:13.cmd.log

	Activity:
	---------

	1) Place UVCS in Modified Hard Safe Configuration

	Sequence: Manual

	SCI_SPEC: Return UVCS to a modified Hard Safe configuration in 
		  preparation for the SOHO High Gain Antenna Keyhole 
		  Period of February 2009.

		  OVI and LyA Slits are set to 100 microns, instrument 
		  is rolled to nominal East (35156 Engineering Units).  
		  Detector High Voltage is ramped down and then turned off.  
		  The 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 
		  (64).  
		  
		  UVCS removed from ESR Warning and Experiment Offpoint list
		  at approximately 12:31 and 12:40 UT, respectively.  TSU 
		  Substitution Heater (Circuit #84) turned on at approximately 
		  12:45 UT.

		  FOT using ESR Limit Set, Substitution Heater (Circuit #84) 
		  set to 50% duty cycle.

		  New Business: DAWN spacecraft emergency that caused the
		  loss of DSS-24 pass for 19 February, resulting in a 20
		  hour, 25 minute gap in contact with SOHO was lifted
		  after UVCS safing (DSS-24 no longer lost for DAWN 
		  emergency) however, a subsequent loss of uplink for DSS-65 
		  (Transmitter declared "RED", but still downlink capable) 
		  would still have necessitated UVCS safing.

	OBS_PROG: 

	SCI_OBJ:  

	OBJ:      

	CMP_NAME: 

	CMP_NUM:  

	Duration: start: 2009.02.19.12:31
		    end: 2009.02.19.13:06

	ONUMs =	25155

	Instrument configuration:

		- Pointing:  Sun center

		- Spacecraft Roll:  0 Degrees

		- Roll:  90 Degrees (35156)

		- Mirror/Occulter:  1.5 Ro
                                    1.5 mm overocculting

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

                - LYA GRTPOS: 100000
		- OVI GRTPOS: 210000

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

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

		- LYA mask:   LYA_wing_100 in slot 5
		- OVI mask:   OVI_303_8x2  in slot 3

	Fits Files:


	2) UVCS in Modified Hard Safe Configuration

	Sequence: None

	SCI_SPEC: Following completion of Science Observations, UVCS 
		  is placed into a modified Hard Safe configuration in 
		  preparation for the SOHO High Gain Antenna Keyhole 
		  Period of February 2009.

		  OVI and LyA Slits are set to 100 microns, instrument 
		  is rolled to nominal East (35156 Engineering Units).  
		  Detector High Voltage is ramped down and then turned off.  
		  The 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 
		  (64).  
		  		  
		  FOT using ESR Limit Set, TSU Substitution Heater (Circuit 
		  #84) powered on and set to 50% duty cycle.  UVCS removed 
		  from Experiment Offpoint and ESR warning lists for Keyhole.

	OBS_PROG: 

	SCI_OBJ:  

	OBJ:      

	CMP_NAME: 

	CMP_NUM:  

	Duration: start: 2009.02.19.13:06
		    end: 2009.02.20.17:00

	ONUMs =	25155

	Instrument configuration:

		- Pointing:  Sun center

		- Spacecraft Roll:  0 Degrees

		- Roll:  90 Degrees (35156)

		- Mirror/Occulter:  1.5 Ro
                                    1.5 mm overocculting

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

                - LYA GRTPOS: 100000
		- OVI GRTPOS: 210000

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

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

		- LYA mask:   LYA_wing_100 in slot 5
		- OVI mask:   OVI_303_8x2  in slot 3

	Fits Files:

GAP between 02/19/09|14:16:01(10170) and 02/19/09|17:12:23(10730)
GAP between 02/19/09|23:29:24(14187) and 02/19/09|23:30:50(14324)
GAP between 02/20/09|03:34:41( 4983) and 02/20/09|22:09:46(13811)