Log for 2/04/05 am Observers: RG, BK First ALFALFA Observing Run! System Configuration: File: /share/pserverf.sda3/wappdata/wapp.20050204.a2010.****.fits LST fits Scan calscan Source Pattern Start coords. ang time loop calmode 1145 0001 503511644 503512158 drift38p1 fixAZdr 114500+090730 19 512 3 loopend getting TP display only of 0-3 1154 0002 503512161 503512675 512 "" 1202 0003 503512678 503513192 512 "" 1214 0004 503513379 503513893 121400+090730 512 3 now we're getting all bms...! 1223 0005 503513896 503514410 512 1232 0006 503514413 503514927 512 1240 0007 503514951 503515553 124016+090730 600 3 changed duration to 600sec 1250 0008 503515556 503516158 600 1301 0009 503516161 503516163 600 1310 0010 503516771 503517374 131035+090730 600 10 1321 0011 503517377 503517979 600 1331 0012 503517982 503518584 1341 0013 503518587 503519189 1351 0014 503519192 503519794 1401 0015 503519797 503520399 1411 0016 503520402 503521004 1421 0017 503521007 503521609 1431 0018 503521612 503522214 1441 0019 503522217 503522819 decJ out of step by 16" 1451 0020 503522824 503523427 145148+090730 600 6 1501 0021 503523430 503524032 1512 0022 503524035 503524637 1522 0023 503524640 503525242 1542 0024 503525245 503525847 1542 0025 503525850 503526452 Sunrise; decJ off by 18" 1553 0026 503526458 503527060 155236+090730 600 4 1 hr of free (mediocre) time... 1603 0027 503527063 503527665 1613 0028 503527668 503528270 1623 0029 503528273 503528875 decJ our of step by 16" Weather: overcast at 3 am; clear at dawn. Notes: 0- Forgot to do series of cals at the beginning... 1- Inner ZA limit for Gregorian is 4.5887 deg tonight. Could not do scheduled dec. Had to start w/38p1. 2- First set of 3 scans recording data only for 4 beams; beams 4-5-6 blank, no data in file Hit "Configure Wapp ALFA" and got them back. Power occasionally lost from display... rocky start. 3- Changed drift length to 600 sec after 1214LST; 512 too hard to make additions on the fly at 3am. A lot easier with 10 min duration... 4- It's proving impossible to start new set of drifts (updating dec) w/o losing at least 10 sec 5- It looks as if Dec stays constant at 090730J through more than 1 drift: did ML make the change? We'll take a chance andrun a loop of 100 min... 6- After a series of 10 drifts with no interuptions, the dec drifts about about 17 arcseconds. Decision made to do 6 drifts in a row instead.