### OBSDATE ###
20130105

### LOGDATE ###
130106

### OBSERVERS ###
MJI, YK

### WEATHER ###
Clear, warm, low winds

### LOCATION ###
SUSI

### PROGRAM ###
Originally, get the last of Rob de Rosa's stars then a MUSCA binary. But we had problems with  siderostats (see below) so tried a baseline that hasn't been tried in a while (60m North) with a more accurate beta Ori diameter just for fun before the MUSCA binary.

### SIDEROSTATS ###
n1 n3 n4  s2  

### TARGETS ###
bet ori... problems.

HR 1790 (Bellatrix, air offset -2).
HR 1713 (Rigel)
HR 1702
HR 1702 (after another "tg", moving the air offset from -2 to -4)
HR 1713 (air offset at -3..fringes now at -720. Drifting negative).
HR 1735. Fringes extremely weak, but good on MUSCA (oops, no MUSCA saving).
HR 1998. A better cal. Same brightness as the previous one...
***
HR 1852. Air offset -2.
Lots of MUSCA data on this.

### QUALITY ###
 Average 

### PROBLEMS ###
N3 motor stalled, probably because it got stuck during roof close last night. Then the motor couldn't move the siderostat, and we couldn't find an imperial allen key to re-attach the gear.

N1's indexing problems have returned. Neither axis will index. No torches with batteries so we'll wait until tomorrow.