Vatt TCS non-user Documentation

Hidden buttons
	Misc Cover RMB
		turn off mirror cover motors.
	Misc Clear RMB
		print load cell values.
	Misc Clear MMB
		flush log.
	Misc track RMB
		toggle derotator tracking.
	Autog Guide MMB
		write framegrabber contents to /tmp/fg.fits
	Secondary Clear RMB
		print last lvdt readings.
	Secondary Clear MMB
		get new lvdt readings.
		print them.
		update Current user values.
		write to log.

Log details	(/home/vattop/logger_data)
	temp	The 7 temperature readings in degrees C.
		    glassair	= t1
		    glasssurf	= average of t0 and t2
		    strutair	= average of t3 and t6
		    strutsurf	= average of t4 and t5
		The selected target. (0=glasssurf ["OFF"], 1=user, 2=strutair)
		The value of the selected target in degrees C.
		The value sent to the neslab in degrees C.

	sec_el	current altitude in degrees, cosine(altitude), strutsurf temp,
		current azimuth in degrees, current derotator angle in degrees

		The 6 values on each of the sec_ lines below are in order of
		tipx	tipy	tipz	decenx	deceny	focus
		in units of arcseconds for the tip?
		and in units of microns for the others
	sec_u	user input values			(Command)
		followed by 6 flags to indicate which values have changed
		since the last logging in respective order
		(1 = changed, 0 = not changed)
	sec_c	the auto correction values		(Auto)
	sec_z	the zero point
	sec_m	the target position (sum of _u, _c, _z)
	sec_p	the secondary position in user units	(Current)
		as calculated from the readback lvdts
		(should be close to the sum of _u, _c)

		The 6 values on each of the sec_ lines below are in order of
		the lvdt number and are in units of volts.
	sec_t	the target lvdt voltages
	sec_v	the readback lvdt voltages

	serv_c	servo motor cuurents in amps - alt, az, derot
	serv_h	servo history.  Units are raw lm628 encoder counts.
		axis index(0=oldest) commmanded_position last_delta_position \
		  value_sent_to_servo_dac lm628_status
		Note: last_delta_position and value_sent_to_servo_dac are
		computed after a serv_E but before a serv_F.

		In the serv_ lines below, all units are degrees,
		except for lst and ra which are in hours and
		ra's and dec's are apparent (true of date = today's epoch).
		todays_epoch is in years.
	serv_s	stow was pressed
		lst ra dec alt az derot
	serv_m	servo move to new RA, DEC
		lst ra dec alt az derot -> newra newdec todays_epoch \
		new_alt new_az new_derot
	serv_E	servo error - no encoder counts
		axis lst ra dec alt az derot
	serv_F	servo error - excessive position error
		axis lst ra dec alt az derot lm628_status