Palomar LGSAO Engineering Summary 11/18/05 UT

Daytime results:

Night log:
1720 Preparing to project high-power beam in dome.  Laser at 6W.
1750 Projecting in dome to align BTO.
1800 Preparing to project on sky.
1815 IR camera interlock cannot be cleared. Jumpering IR camera.
1818 Propagating at zenith.
1821 Unable to acquire image of Raleigh due to telemetry server problem.
1824 Acquisition camera functioning again.
1835 Boresighted LLT using Raleigh return.
1840 Reconfiguring LLT for stellar imaging.
1855 Testing IR camera - still triggering safety interlock.
1912 Performing final boresighting in LLT wide-field mode on V=2 star.
1920 Having trouble finding star in narrow-field mode.
1935 Measured seeing on PHARO: Alpha And : 1.17" TT only at BrG -> 1.60" in V
1940 Testing LGS image quality as fn. of primary mirror tilt.
1947 Image jumped ~25" on an LLT focus move of 50.  Homing actuators to recover.
2000 Searching for star in wide-field mode.
2016 Measured seeing: 1.60" in V
2053 Image quality as function of LLT primary tilt:
	"x" minimum = -2.0 arcmin from fld stop. FWHM = 2.55"
	"y" minimum = +4.0 arcmin from fld stop. FWHM = 2.36"
2152 Moving to zenith to boresight on laser.
2201 Propagating at zenith.  Laser power 5.2 W.
2202 Boresighting on Raleigh.
2215 Rough llt focus: 5223.
2217 Detuning.  Q3 interlock triggered on detuning.
2220 Pausing for Rich and Hal to return to the data room.  Laser now 7W.
2230 Projecting at zenith again.
2231 Shuttered on Q3 interlock, due to detuning again.
2235 Having trouble with 1.06 laser non-linear crystal. Working on laser.
2240 Projecting at zenith again.
2240 Focusing acquisition camera:
	llt_3_focus; acq_foc=11190; FWHM=3.35"
	llt_4_focus; llt_foc=5200; FWHM=3.06"
2251 Installing V filter, measuring laser power: 6.25W
	Laser power: 6.25
laser: llt_5.fits, llt_7.fits (10s integ.)
	detunned: llt_6_sky.fits
	Laser power: 6.8 W
2305 Moving to Tycho-2 2330-1878-1 (v=10.00)
	cal1_1.fits - cal1_4.fits (2s integ.)
	seeing: 1.1" TT only in BrG -> 1.5" in V.
2320 Moving back to zenith for UTT test.
2336 Preliminary LGS magnitude (llt_5.fits): V=10.8 (through thin cirrus...)
2326 Shuttered by ACAM cloud detection.  Narrowing avoidance cone to 5deg.
2340 Closed UTT loop.  Successful!  Offset 1.5" from center, closed loop, drove it back.
2345 Shuttered again by ASCAM cloud detection. Jumpering ASCAM.
0000 Insufficient flux at 100Hz to close loop (through thickening cirrus).
0005 Testing source of scattered light on HOWFS.
0008 Shuttering due to thick clouds.
0008 Jean checking dome for windblown debris.
0025 Starting NGS DM tip/tilt suppression experiment.
0137 Closing dome for off-zenith BTO alignment test.
0146 zenith: no problem.
	HA=0, Dec=33: no problem.
	HA=0, Dec=23: no problem.
	HA=0, Dec=13: no problem.
	HA=0, Dec=03: failed
	HA=0.5, Dec=24: failed
	HA=0.5. Dec=33: no problem.
	HA=0.5, Dec=18: no problem.
	Conclusion: need to be <5 deg. from measured posn using linear model
0220 not doing anythin
0358 Measuring BTO open-loop pointing & BTO transmission:
	bto_north_2: zenith north to el=60.0
0440 Returning to zenith.  BTO out of alignment.  Found that trolley positions have changed, possibly due to running into positive limit switch.
0530 Starting new run, zenith south: bto_south_3
0608 Finally done.