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lbaops:lbamar2008:v252datlog

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lbaops:lbamar2008:v252datlog [2008/03/26 14:25]
chris.phillips
lbaops:lbamar2008:v252datlog [2015/12/18 16:38] (current)
Line 1: Line 1:
-Recording to ATNF V015B\\\\\ +Recording to ATNF V015B 
-\\\\\ + 
-| width=50%\\\\\ +| width=50% 
-| 02:00 | onsource tied C12345 |\\\\\ +| 01:57 | pre-start cacal phase | 
-| ~2:10 | cacal phase |\\\\\ +| 02:00 | onsource tied C12345 | 
-| 02:33 | cacal | \\\\\ +| ~2:10 | cacal phase | 
-| 03:23 | cacal |\\\\\ +| 02:33 | cacal |  
-\\+| 03:23 | cacal | 
 +| 04:13 | cacal | 
 Phase drifting relatively fast. Weather? Phase drifting relatively fast. Weather?
 +
 +03:40 scan on 0252-474 shows rapid phase variation and amplitude dips. Seemon shows path noise has shot up to 2000 microns over the last ~10 minutes from ~500 microns, so atmospheric turbulence (usually worst in a diurnal sense at around this time of day) is the cause.
 +
 +05:50 phase stability continues to be poor, so "​untie"​ the array and keep only CA04 in the tied array.
 +
 +05:57 concensus that tying 1 and 4 will be okay! So change catie and change correlator logging accordingly.
 +
 +21:01 UT: stop during slew between sources to take CA06 out, then restart. (No impact on the VLBI observing, but note it here for the record.)
 +
 +
lbaops/lbamar2008/v252datlog.1206501910.txt.gz · Last modified: 2015/12/18 16:38 (external edit)