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

	Date:		21 April 2008
	-----

 	Last revision:	28 July 2008 (MU)
	--------------

	File Name: 	2008.04.18.a.log
	----------

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

	UVCS Activity:	Ramp Down and Turn off OVI Detector HV
	--------------	Power off OVI Detector
                        Turn on LYA Detector
			Conduct LYA Stimulus Pulse Test
                        Turn on and Ramp Up LYA Detector HV
                        Load and Start LYA Detector Diagnostic for
                        18 April 2008
			Load Physical Parameters of Coronal Holes Across 
			the Sonic Point for 18 - 19 April 2008
			Load Physical Parameters of Coronal Holes Across 
			the Sonic Point for 19 - 20 April 2008
			Load Physical Parameters of Coronal Holes Across 
			the Sonic Point for 20 - 21 April 2008
                        Load LYA Detector Diagnostic for 21 April 2008
	
	SOHO Activity:	
	--------------	

	EOF Staff:      D. Telloni: Lead Scientist
	----------	R. Wu: Commander
			M. Uzzo: Planner

	Command file:	08.04.18.17:45:00.cmd.log

	Activity:
	---------

 	1) LYA Stimulus Pulse Test

	Sequence: TakeUV_TxN.tcl

	SCI_SPEC: 

	OBS_PROG: 

	SCI_OBJ:  

	OBJ:

	CMP_NAME:

	CMP_NUM:

	Duration: start: 2008.04.18.17:57
		    end: 2008.04.18.18:01

	ONUMs = 24372 (2 exps)

	Instrument configuration:

		- Pointing:  Sun center

                - Spacecraft Roll: 0 Degrees

		- Roll:	263 Degrees (1104)

		- Mirror/Occulter:  1.7 Ro
				    1.5 mm overocculting

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

                - LYA GRTPOS: 100000
		- OVI GRTPOS: 210000

		- LYA MCP Voltage: 0 
		- OVI MCP Voltage: 0 

		- LYA mask:   LYA_303_8x2 in slot 3

	Fits Files:

q08.04.18.17:56:01.lya.dat

	2) LYA Detector Diagnostic

	Sequence: LYA_100_chk.tcl

	SCI_SPEC: 

	OBS_PROG: Spatial Resolution

	SCI_OBJ:  

	OBJ:      Coronal Hole

	CMP_NAME: 

	CMP_NUM:  

	Duration: start: 2008.04.18.18:20
                    end: 2008.04.18.18:50

	ONUMs =	24373 (6 exps) 

	Instrument configuration:

		- Pointing:  Sun center

		- Spacecraft Roll:  0 Degrees

		- Roll:  0 Degrees (18762)

		- Mirror/Occulter:  1.75 Ro
				    1.5 mm overocculting

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

		- LYA GRTPOS: 100000
		- OVI GRTPOS: 210000

		- LYA MCP Voltage: 195 

		- LYA mask:   LYA_chk_1xfull in slot 6

	Fits Files:

q08.04.18.18:09:59.lya.dat

	3) Physical Parameters of Coronal Holes Across the Sonic Point

	Sequence: 08.04_sonic.tcl, n50min = 29

	SCI_SPEC: Main scientific objective is to study plasma properties 
		  varying with time.

		  Note: Pixel 300 at 90 Degrees

	OBS_PROG: Primary: Temporal Coverage
		  Sub Obj: Spatial Coverage

	SCI_OBJ:  Plasma Properties...Ion Temperatures

	OBJ:      Entire Corona

	CMP_NAME: 

	CMP_NUM:  

	Duration: start: 2008.04.18.19:01
		    end: 2008.04.19.18:59

	ONUMs = 24374 (360 exps)
		24375 (336 exps)

	Instrument configuration:

		- Pointing:  Sun center

                - Spacecraft Roll:  0 Degrees

		- Roll:	96.7 Degrees (36376)

		- Mirror/Occulter:  3.7 Ro
				    1.5 mm overocculting

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

		- LYA GRTPOS: 100000
		- OVI GRTPOS: 210000

		- LYA MCP Voltage: 195 

		- LYA mask:   LYA_VEX_4x1 in slot 2

	Fits Files:

q08.04.18.19:00:03.lya.dat
q08.04.19.07:24:46.lya.dat