### OBSDATE ###
20091216

### LOGDATE ###
091217

### OBSERVERS ###
Mike and Yitping

### WEATHER ###
Clear, a little windy (but not quite enough to turn our weather station wind thing)

### LOCATION ###
SUSI

### PROGRAM ###
Check that things still work after our optics changes, and see if there are any obvious signs in PAVO data of binarity for eta CMa

### SIDEROSTATS ###
 n3  s1   

### TARGETS ###
HR 2491, 2827, 2294 and other cals.

No fringes on HR 2498. Possibly there was something wrong with this target? It looked much fainter than 4.5.

### PROBLEMS ###
1) We aligned the North beam T/T mirror on the laser, and then had to un-do our alignment on-sky, because the beam was barely going through the mask.
2) The PAVO background value for tip/tilt continues to change, meaning that PAVO locks tip/tilt on to noise.
3) North would _always_ lose the star when the pellicle went through the beam.
4) S1 had major tracking failures... moving off a long way in azimuth.
5) With bad seeing early in the night on sirius, we realized that it would be a great idea to have the tip/tilt mirror positions saved.
6) Left the apertures in for Sirius early in the evening. AND the aperture gui is still back to front (north and south).