### OBSDATE ###
20130404

### LOGDATE ###
130405

### OBSERVERS ###
ACR

### WEATHER ###
Fairly good after first few hours

### LOCATION ###
SUSI

### PROGRAM ###
Sco Cen orbit monitoring

### SIDEROSTATS ###
  n4   s3 

### TARGETS ###
Bet-Cru: fringe finding, at 570um Gain 190 (200 was too high)

Lam-Cru (hr4897) Cal 4.6mag : fringes at 600um. Gain 230 Lost the star due to N4 ark9 failure requiring a reboot. Did a shutter sequence after re-acquiring, only 50s of data.
 
f-Cen (hr4940) 4.7mag: fringes:  Couldn't find fringes, going to try alfmus as it is brighter

Set gain=210
Del-Cru (hr4656) cal 2.8mag fringes at 470um 

Alf-Mus (hr4798) 2.7mag fringes at 480um. Very intermittent fringes (9:20pm) These stars should be relatively easy.

Del-Cru: great fringes at 400um.

Alf-Mus: fringes 450um, fringes slightly better than last time but still terrible compared to del-cru.

Tet-Car (hr4199) 2.78mag fringes at 350um again, better than Alf-Mus

Alf-Mus: fringes at 440um 

Del-Cru: fringes at 360um

Alf-Mus: fringes at 470um fringes getting better

Tet-Car: fringes at 300 um 

Alf-Mus: finges at 410um

Del-Cru: fringes at 320um

Alf-Mus: fringes at 420um

Tet-Car: fringes at 300um

Alf-Mus:fringes at 390um

Del-Cru: fringes at 280um

Alf-Mus: fringes at 410um

Tet-Car: fringes at 300um

Set Gain=230.
Lam-Cru (hr4897) V=4.6: trying f-Cen again since conditions are good and I have plenty on Alf-Mus. Fringes at 340um

f-Cen (hr4940) V=4.7: Finges at 200um, conditions really are much better now, got 100s very quickly.

Ksi02-Cen (hr4942) V=4.2: Fringes at 200um 

f-Cen: Fringes at 180um

Ksi02-Cen: fringes at 170um

Set Gain=210 Switching to Tau-Sco
Mu02-Sco (hr6252) V=3.5: Fringes at  490um, however the cart is moving extremely quickly (-2000um/s), this is probably a bad thing. Fringes are all over the place.

Tau-Sco (hr6165) V=2.8: Fringes at 380um also intermittent but less than Mu02-Sco

Pi-Sco (hr5944) V=2.9L Fringes at 260um, again intermittent V^2 still got up to 0.2 though.

Tau-Sco: Fringes at 360um.

Eta-Lup (hr5948) V=3.4: Fringes at 280um, fringes intermittent (but less so than previous)

Tau-Sco: Fringes at 280um, just saw V^2 = 0.7!

Pi-Sco: Fringes at 140um Things are intermittent again.....

Tau-Sco: Fringes at 220um intermittent.

Mu02-Sco: Fringes at 300um

Tau-Sco: Fringes at 190um

Pi-Sco: Fringes at 90um

Tau-Lib (hr5812) V=3.6: can't find fringes, and can't see any obvious issue.....switching back to Tau-Sco for the last couple hours, may as well do one star well.....

Eta-Lup: Fringes at 140um better than previous, V2=0.3

Tau-Sco: Fringes at 100um

Pi-Sco: Fringes at 0um

Tau-Sco: Fringes at 60um

Mu02-Sco: Fringes at 210um, a bit patchy, although this star is fainter than the rest.

Tau-Sco: Fringes at 20um

Pi-Sco: Fringes at -50um

Tau-Sco: Fringes at 0um
Clouds coming from the East according to satellite images, can see them peeking out on skymon

Eta-Lup: Fringes at 50um a bit patchy

Tau-Sco: Fringes at -30um

Mu02-Sco: Fringes at 80um 

Tau-Sco: Fringes at -50um

Pi-Sco: Fringes at -160um

Didn't finish the last one as I had rain on environgtk.


### QUALITY ###
Very good (several calibrated points)  

### PROBLEMS ###
The trend of the metrology system being optimised for the positive (>60m) of the tunnel seems to continue tonight for the North and not for the South. South appears best around 30m. North was absolutely enormous past 60m. Later in the night signals were both great at 20m.