UT 2010-10-13
=============

VEGA+MIRC

UT 20:48 = LT 19:48

start with
B1-B2-B3-B4
E1-E2-W2-W1

POPs:
S1-S2-E1-E2-W1-W2
 4- 5- 1- 2- 1- 5

(Ref: W2)

LT 19:40 (HD203280 = Alpha Cep) target, doing fiber alignment
LT 20:12 recording a lot of data MIRC + VEGA
LT 20:46 lost fringes on W2-baselines due to W2-problems
LT 21:25 (HD195725) calibrator
   	 recording MIRC+VEGA
LT 21:55 (HD203280 = Alpha Cep) target
LT 22:05 we have fringes with MIRC on all baselines, 
   	 but VEGA does not have light for beam 1
	 problem fixed, recorded MIRC+VEGA data
LT 22:58 (HD192907 = Kappa Cep) calibrator
   	 recording data MIRC+VEGA
LT 23:40 (HD205021) target
   	 poor seeing
	 recording data MIRC+VEGA
LT 00:15 (HD192907) calibrator
	 recording data MIRC+VEGA
LT 00:42 (HD205021) target

LT 01:07 switching to:
   	 B1-B2-B3-B4
	 S1-S2-W2-W1  (config: S1-S2-W2, S2-W2-W1)
LT 01:20 (HD29248) calibrator
   	 rather faint (H=4.5) and difficult to track for MIRC
	 recording MIRC+VEGA data (VEGA on S1-S2-W2)
	 likely low quality
	 very poor seeing and some wind
LT 02:15 (HD37022 = T1OriC) target
   	 fringes difficult to track
	 flux on S1 and S2 is low (poor coating of these telescope mirrors)
	 try flatfield (Coherent coadds=700, Save Number=10000 to accumulate, 10001 to reset)
	 poor data quality  (altitude=43 deg)
LT 03:20 (HD43386) calibrator
   	 searching fringes takes a long time (alt=58 deg)
	 seeing down to 4-5 ms
LT 04:18 (HD37022 = T1OriC) target
   	 recording MIRC+VEGA data (altitude 50 deg)
	 tracking maybe slightly better than before, but still fringes are lost frequently
LT 05:22 (HD43386) calibrator
   	 problem finding fringes on S1	 
	 recording VEGA data without MIRC tracking
	 recording MIRC data