User Tools

Site Tools


lbaops:lbajul2009:v275catlog

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

lbaops:lbajul2009:v275catlog [2009/07/03 00:35]
guest
lbaops:lbajul2009:v275catlog [2015/12/18 16:38]
Line 1: Line 1:
-Recording to CURT V001A 
- 
-Severe problems at ATCA. First time VLBI with CABB. 
- 
-1. CAOBS could not read UTC schedules properly. Fixed and on schedule at 09:07:20 UT. 
- 
-2. Can only use DAS1 on 2nd atca freq. Had to plu Huygen'​s cable timing into DAS1 (no direct cables!!). Could write only with vsib_record directly. Command: "​vsib_record -t 19h -o v275c_At -m 2 -c xo" and started at 08:29:05 UT. 
- 
-3. Can only tie CA01 (no fringe rotation). +90 deg phase in ok, but it may swap polarisations. 
- 
-4. Not enough gain into DAS. Stats 0,50,50,0 !! 
- 
-~10:35 - 11:15 UT - fixing statistics. Now 17,​33,​33,​17. ​ BEFORE THIS time stats were way off. Not sure what the impact will be on the data. 
- 
-11:20 UT - fixed to produce circulars. BEFORE this pols are uncertain!! 
- 
-11:31 - 13:08 OFF schedule. Testing on 1921-293. Implemented new code fro fringe-rotation,​ tying the antennas and circular polarisation. 
- 
-  *  ** BEFORE 13:08UT data of doubtful value BUT all is on disk.** 
- 
-13:08UT On-source with TIED antennas 1345. Tied ok on 1921-293 and should have circulars, nominal LCP,RCP but could easily be the other way around. Phases looked very stable. 
- 
- 
- 
- 
- 
- 
  
lbaops/lbajul2009/v275catlog.txt · Last modified: 2015/12/18 16:38 (external edit)