winter mix affected 8 GHz intermittantly over 12-06 thru 12-08 schedule changed to NASA.DEC.96 on 12-09-96 3:30 p.m. regular maintenace scheduled for tuesdays a.m. MJD 50430 0236+610 (LSI +61 303) peaked at > 200 mJy at 8 GHz (12-13-96) rain on 12-13-96 may affect 8 GHz new schedule (NASA.DEC.96c) started on 20 Dec 14:30 50438-40 8 GHz dropping out frequently: some editing on strong sources done, but not on weak and variable sources 50443-47 both 8 GHz and 2 GHz intermittant: editing routine applied to strong slowly variable sources, but weak sources and 1909+048 display much data that is not good 50444 Cyg X-3 exhibited low fluxes during a questionable data GBI data period 50457 winter mix 1-09-97 lowering 8 GHz 50458 Cyg X-3 exhibited a few hours of quenching during high GBI performance 50460 Cyg X-3 marginally quenching during reasonably good GBI performance 50462 Jan 14 schedule NASA.JAN.97a started at 21:55 50463 Jan 15 L-L correlator on 8 GHz dropped from 4 UT to 14 UT 50464 Jan 16 down for snow for half day and L-L dropped at 8 GHz at 20 UT 50465 Jan 17 L-L at 8 GHz still needs editing 50472 Jan 24 freezing rain 50473 Jan 25 R-R correlator at 2 GHz dropping out 50474 Jan 26 schedule NASA.JAN.97b started at 15:30 UT 50475 Jan 27 intermittant snow lowering 8 GHz fluxes 50476 Jan 28 down all night for freezing rain and 8 GHz somewhat low 50484 Feb 05 intermittant winter weather may affect 8 GHz 50486 Feb 07 15 UT system out for repairs 50489 Feb 10 14 UT back on-line 50490 Feb 11 20 UT started NASA.FEB.97c schedule 50493 Feb 14 winter mix -- down for nite 50498 Feb 19 15:30 started NASA.FEB.97d until 2-25-97 50504 Feb 25 started NASA.FEB.97e after maintenance 50505 Feb 26 8 GHz fluxes affected by rain in pm (cal source affected) 50508 Mar 01 8 GHz fluxes affected by rain in am 50510 Mar 03 spring rain again 50512 Mar 05 rain in pm 50513 Mar 06 wind and snow in am 50517 Mar 10 8 GHz a bit low overnite (winter mix) 50519 Mar 12 schedule interrupted for pointing check until 14 UT 50521 Mar 14 rain affected cal at 8 GHz 50525 Mar 18 NASA.MAR.97a schedule started 50525 Mar 18 heavy rain 50526 Mar 19 rain/winter mix (8 GHz?) 50530 Mar 23 18:30 UT receiver began warming 50531 Mar 24 receiver repaired after warm up 50533 Mar 26 off-line at 21 UT for more refrigerator repairs 50534 Mar 27 back on-line at 21:35 UT with NASA.MAR.97c 50537 Mar 30 rain in p.m. (8 GHz low) 50538 Mar 31 down for snow at 1130 UT, 8 GHz low before off-line 50544 Apr 06 rain in p.m. (lowered 8 GHz) 50548 Apr 10 bad power supply 5 UT - 1530 UT 50550 Apr 12 rain 50551 Apr 13 on-line computer crashed 50552 Apr 14 back on-line 15.5 UT; NASA.APR.97a started 50555 Apr 17 rain 50561 Apr 23 pointing run 50565 Apr 27 rain (lowers 8 GHz) 50566 Apr 28 rain continuing 50577 May 09 rain, especially during cal sources 50585 May 17 power outage at 15.5 UT 50586 May 18 system out 1:30 - 18 UT 50588 May 20 heavy rain (8 GHz low) early UT hours 50594 May 26 heavy rain early UT hours 50600 Jun 01 rain after 14 UT 50601 Jun 02 heavy rain late 50602 Jun 03 intermittant rain (not during Cyg X-3) 50611 Jun 12 rain after 13 UT 50648 Jul 19 down 7 -18 UT 50652 Jul 23 8 GHz repaired after lightning strike 8 GHz dropped out on many sources very little editing has been done at this time 50653 Jul 24 out-of-lock 22 UT - 02 UT (50654) 50654 Jul 25 dropping around 17 UT 50655 JUl 26 system out 6-17 UT 50661 Aug 01 out of lock 6-12 UT 50669 Aug 09 system out 4.5-14.5 UT NOTE: pm fluxes at 8 GHz frequently affected (lowered) by atmospheric instability, etc. at this season 50677 Aug 17 system dropped out 3-17 UT 50695 Sep 04 cryogenics warmed after 4 UT 50696 Sep 05 repairs through 20 UT 50700 Sep 09 NASA.SEP.97b schedule startetd at 19 UT 50709 Sep 18 system out 21 UT - 1.6 UT 50711 Sep 20 pm rain (8 GHz fluxes low) 50712 Sep 21 system out of lock 12 - 17:43 UT 50717 Sep 26 system down 4-12 UT 50719 Sep 28 rain pm 50720 Sep 29 rain continued until pm 50723 Oct 02 NASA.OCT.97a schedule started 50745 Oct 24 rain -- fluxes at 8 GHz low in pm 50756 Nov 04 snow around 9 UT reduced 8 GHz fluxes 50757 Nov 05 hardware problems at 2 GHz -- noisy data 50760 Nov 08 off-line for snow 6-15 UT 50769 Nov 17 some snow on dish at 15 UT affecting cal sources 50773 Nov 21 late p.m. rain lowering 8 GHz 50778 Nov 26 NRAO shutdown for holiday at 20 UT 50791 Dec 09 snow in pm reducing 8 GHz fluxes 50792 Dec 10 snow complicating calibration at 8 GHz 50804 Dec 22 snow in am 50807 Dec 25 shutdown for holidays 50809 Dec 27 snow during day 50811 Dec 29 shutdown for major snow in pm 50821 Jan 08 8 GHz low in heavy rainstorms 50825 Jan 12 snow and ice major impact on 8 GHz 50828 Jan 15 serious ice on antennas 50829 Jan 16 cable problems 50836 Jan 23 stopped operations for ice on antennas until 13 UT 8 GHz fluxes dropping prior to shutdown due to ice and remain lowered after observing resumed 50837 Jan 24 observing halted at 18 UT for snow 50846 Feb 02 HR1099 flaring high at 0.4 UT but dropped very quickly: scans at 2.8 and 4.1 UT quite low though scans in this timeperiod on 0528+134, 0224+671, and 0430+289 normal 50848 Feb 04 off-line at 4 UT for serious snow prediction 50849 Feb 05 freezing rain 9-14 UT 50850 Feb 06 off-line 11:30-16 UT for snow 50867 Feb 23 off line at 20 UT for snow 50868 Feb 24 on-line but snow continues to affect 8 GHz fluxes 50891 Mar 19 hardware problem at 2 GHz: frequent dropouts 50901 Mar 29 frequent dropouts at both frequencies 50903 Mar 31 occasional dropouts at 8 GHz on fluxes <200 mJy 50931 Apr 28 NASA.APR.98f schedule started 50934 May 01 heavy rain in pm affecting 8 GHz fluxes 50971 Jun 07 R-R correlator dropping out at 2 GHz: edited 50972 Jun 08 link down at 19 UT until tomorrow note that the errors quoted for 1748-288 may not adequately reflect the low dec/elevation of the source (errors listed for an average source with quoted flux level) 50976 Jun 12 periods of heavy rain intermittant for days may lower 8 GHz fluxes 50977 Jun 13 storms again 50979 Jun 15 more storms affecting 8 GHz, especially at 6 UT 50987 Jun 23 note that the high fluxes for J1748-288 at large LHA may be affected by interference: the fluxes for this source listed are now the arithmetically averaged values which are more vulnerable to interference (the vector averaged fluxes are more affected at 8 GHz by atmospheric storms which have been numerous recently) 50990 Jun 26 hardware problem -- offline at 1:30 UT and fluxes were dropping a few hours prior to this time -- back online at 16 UT but dropped out again 16-19 UT 50991 Jun 27 control problems continue intermittantly -- sources dropping 50992 Jun 28 heavy rain in pm lowering 8 GHz flux levels 51009 Jul 15 now listing vector averaged flux for 1748-288 NOTE: starting approximately at this MJD, the system developed more than one hardware problem which has made the system more noisy than the errors quoted on some sources -- see MJD 51251 51040 Aug 15 system problem in pm -- fluxes dropping at both freq 51041 Aug 16 system problems continue on weekend but more stable -- calibration varies over time 51042 Aug 17 off-line for repairs to cryogenics -- repairs will continue through 51043 (Aug 18) 51044 Aug 19 back on line but 8 GHz low 51052 Aug 27 system dropped out overnight Note that one correlator at 2 GHz has been a bit noisy: contact ewaltman@rsd.nrl.navy.mil if questions remain 51055 Aug 31 system dropped out 6-12 UT 51063 Sep 07 system dropped out at 3.5 UT 51064 Sep 08 system OK 3 UT 51065 Sep 09 down at 17 UT for repairs to cryogenics 51066 Sep 10 repairs continue 51067 Sep 11 system functional at 16 UT 51070 Sep 14 cryogenics warming in pm -- data very noisy 51071 Sep 15 major cryogenics repairs for 2-3 days 51084 Sep 28 rain lowering 8 GHz flux levels approx. 7 UT 51085 Sep 29 interference on first Algol scan? 51086 Sep 30 cryogenics warming-- amplitudes low 51087 Oct 01 repairs continue 51088 Oct 02 back online at 1815 UT 51092 Oct 06 marginal hardware problem -- data may need additional editing 51093 Oct 07 also may need additional editing 51096 Oct 10 18 UT through 13:30 UT may need more editing 51119 Nov 02 intermittant problems on X-RR; also Nov 01 51132 Nov 15 Note that 2 GHz fluxes at LHA > 2 hours, especially on J1748-288, CI Cam, and UX Ari, may be systematically higher than predicted by the random errors quoted. This has been the situation for weeks. 51134 Nov 17 cryogenic repairs -- expect downtime of 2 days 51137 Nov 20 back online at 20.5 UT 51140 Nov 23 shutdown for cryogenics reparis at 18:32 UT 51141 Nov 24 back on-line at 23:30 UT 51142 Nov 25 down at 20 UT for holiday 51144 Nov 27 back online at 5 UT 51151 Dec 04 repairs on warm box 51164 Dec 17 off-line at 21 UT for snow 51170 Dec 23 R-R dropping out at 8 GHz needs editing 51173 Dec 26 other correlators dropping out 51174 Dec 27 problems continuing 51175 Dec 28 drop-outs continue; offline at 18:30 UT for snow 51176 Dec 29 8 GHz fluxes lowered by snow on dishes 51177 Dec 30 downtime and low fluxes due to snow but system appears to be recovering in pm 51178 Dec 31 data looking good, but holiday shutdown at 20 UT 1999: 51180 Jan 02 back online after holiday, but shutdown for ice 51181 Jan 03 back online, but Dec pump problems -- temp fix 51182 Jan 04 data is looking better 51183 Jan 05 started NASA.JAN.99a schedule 51184 Jan 06 drop in raw amplitudes making cal difficult data not useable after 17 UT -- cryogenic problem 51185 Jan 07 repairs in progress 51186 Jan 08 snow and ice interfering with multiple repairs anticipate no repairs before monday 51189 Jan 11 online at 18 UT but cryogenics repairs still in progress and data will be more noisy than the errors quoted 51191 Jan 13 cryogenics still not functional -- NOTE that low fluxes are somewhat elevated and noisy 51192 Jan 14 NASA.JAN.99b schedule started for 1 week 51195 Jan 17 etherent problem -- no sources observed 51196 Jan 18 system still running with warm cryogenics: data noisy 51198 Jan 20 cryogenics in process of cooling -- cal difficult 51201 Jan 23 system noisy and calibration difficult (cts/Jy declining) 51203 Jan 25 system level dropping -- data marginal on many scans 51204 Jan 26 system return to normal 51210 Feb 01 offline 12-18 UT for snow 51219 Feb 10 antenna control prolems developed at 15 UT and eluded serious repair efforts following a week of good data 51220 Feb 11 repairs continue to control system -- no data 51221 Feb 12 back online at 3 UT 51224 Feb 15 lots of data flagged - LO dropping out of lock 51225 Feb 16 lots of data flagged - LO dropping out of lock 51234 Feb 25 off-line at 11:20 UT for snow -- back online at 21 UT 51235 Feb 26 receiver on 85-1 warmed up last night -- will run warm (noisy and difficult to calibrate) over weekend 51238 Mar 01 off-line for snow 6-14 UT; receiver still warm 51240 Mar 03 off-line at 21 UT for snow 51241 Mar 04 back on-line at 19 UT, but weather prevents repairs the system is still running warm and noisy 51242 Mar 05 repairs to cryogenics -- back on-line and cool at 22 UT 51246 Mar 09 off-line for snow 12-16 UT; off again at 18:30 UT 51247 Mar 10 back online after snow at 11:30 UT; offline at 18:30 for control computer problem 51251 Mar 14 off-line at 8 UT for snow NOTE that a new directory has been created to display the data from the individual correlators. This directory may be accessed from here by utilizing the 'Up to a higher directory level' option listed here, and then to the 'format' directory. The format directory has been made available because of the persistent but intermittant problems with the R-R correlators, especially at 2 GHz. Note that the errors listed in this directory continue to be the errors determined prior to the R-R problem and therefore refer most correctly to the L-L correlator data and not to the averaged fluxes listed here during these difficult timeperiods. Note also that not all sources are affected equally by these intermittant correlator problems. Note also that the archive data on the X-ray binaries GRS 1915+105, Cyg X-3 (2030+407), SS 433 (1909+048), and LSI+61303 (0236+610) from the ONR funded timeperiod prior to 1996 are now available to public domain in the archives directory, which may also be located as described above for the format directory. Please acknowledge the funding credit statement and relevant references. 51252 Mar 15 back on-line after snow at 17 UT 51258 Mar 21 rain affecting 8 GHz flux level 51270 Apr 02 data quality good for flare in 1915+105 51277 Apr 09 lock lost in storm at 20:30 UT 51279 Apr 11 lock lock in storm 6 - 18 UT 51291 Apr 23 lock out again in storm at 20:25 UT 51292 Apr 24 back online at 1.5 UT 51300 May 02 R-R correlator at 2 GHz dropping out 51312 May 14 repairs in progress 51313 May 15 system dropped out again at 22 UT 51315 May 17 cable was cut saturday -- waiting for repairs 51318 May 20 antenna brake problem -- back online at 20 UT 51320 May 22 system dropped out at 22 UT 51322 May 24 back online at 12 UT but 8 GHz affected by more storms 51323 May 25 antenna 85-1 needs repairs -- ok until 14.5 UT Note that the higher fluxes for 1748-288 at 2 GHz may represent a change in the confusion due to a clock error 51324 May 26 replacing declination slew motor on 85-1 51326 May 28 back online at 18 UT 51336 Jun 07 weather very hot; data noisy 51338 Jun 09 R-R correlator at 8 GHz continues to drop out intermittantly 51348 Jun 19 data quality quite good most of this week 51356 Jun 27 R-R correlator dropping out at 8 GHz 51357 Jun 28 rain affecting 8 GHz for a few hours 51358 Jun 29 data quality good again 51365 Jul 06 system dropped out of lock several times over holiday weekend and was reset 51369 Jul 10 control problem -- back online at 18 UT: data looks good, but R-R is dropping out at 2 GHz -- not edited Note: when R-R is dropping out, use anonymous ftp to: sadira.gb.nrao.edu and cd to the pub/fghigo/gbidata/format directory -- use L-L correlator (MJD, UT, LHA, gain code, 2-LL, 2-RR, 8-LL, 8-RR, avg 2, avg 8 51372 Jul 13 calibration problem at 2 GHz 51379 Jul 20 data quality good 51380 Jul 21 data quality good 51385 Jul 26 data great but refrigerator repairs necessary -- going down 51386 Jul 27 cryogenic repairs continue 51387 Jul 28 back online at 20 UT 51395 Aug 05 some 8 GHz fluxes low -- R-R correlator dropping out again 51399 Aug 09 site wide power outage 51404 Aug 14 storm at 1 UT affecting 8 GHz 51412 Aug 22 system dropped out at 11 UT 51413 Aug 23 back online at 13 UT 51426 Sep 05 intermittant heavy rain dropping 8 GHz 51447 Sep 26 R-R correlator dropping out at 2 GHz 51448 Sep 27 off-line for repairs to LO on 85-1 51449 Sep 28 repairs continue 51450 Sep 29 waiting for repairs to be completed; some data exists, but it is very noisy. The data is available as public domain, but requires detailed discussion. Contact EBW. 51451 Sep 30 cryogenics on 85-1 to be repaired tomorrow 51453 Oct 02 back online, a bit noisy but useable 51455 Oct 04 heavy rain 51461 Oct 10 rain 51465 Oct 14 heavy short rain early; also R-R at 2 GHz noisy again 51472 Oct 21 cryogenics repair in progress 51473 Oct 22 cryogenic repairs continue 51480 Oct 29 down at 20 UT -- antenna brake problem 51483 Nov 01 back online at 19 UT 51485 Nov 03 snow -- cal at 8 GHz marginal 51496 Nov 14 data quality good for 1915+105 51500 Nov 18 R-R dropping out at 8 GHz 51506 Nov 24 shutdown at 19.5 UT for Thanksgiving until 11-26 am 51508 Nov 26 heavy rain affecting 8 GHz 51520 Dec 08 2012+381 somewhat elevated at 2 GHz but rms on phase may not be consistent with good data 51522 Dec 10 calibration at 8 GHz not good at 20% level 51523 Dec 11 scheduled off-line for weekend (funding reduction) 51525 Dec 13 on-line at 15.5 UT 51530 Dec 18 R-R correlator at 8 GHz dropping out 51534 Dec 22 R-R correlators noisy again; also snow 51535 Dec 23 shutdown for holidays after good data on 1915+105 51543 Dec 31 shutdown for holiday 51547 Jan 04 back online after holiday shutdown until 21 UT then shutdown for snow -- calibration difficult 51548 Jan 05 calibration continues to be approximate due to shutdowns 51549 Jan 06 calibration normal 51553 Jan 10 L-L correlator at 2 GHz dropping out 51554 Jan 11 2 GHz correlator again dropping out; some dropouts at 8 GHz off-line at 19 UT for high wind 51555 Jan 12 multiple hardware problems after returning online 51556 Jan 13 hardware problems not yet solved; wind, snow and ice as well 51557 Jan 14 back online with good data at 19 UT 51562 Jan 19 shutdown at 21 UT for snow 51564 Jan 21 back online at 16:30 UT 51566 Jan 23 system out at 17 UT 51567 Jan 24 hardware problems continue 51569 Jan 26 back online at 15 UT 51573 Jan 30 off-line at 2 UT for snow 51574 Jan 31 on-line at 16 UT 51586 Feb 12 snow; 8 GHz appears to have died below snow level at 18 UT 51587 Feb 13 8 GHz noisy with drop-outs 51588 Feb 14 2-RR dropping out intermittantly 51589 Feb 15 2-RR dropping out intermittantly; cryo leak repairs 19-22 UT 51592 Feb 18 sleet and freezing rain and 8 GHz hardware problems shutdown at 20:30 UT for holiday weekend 51596 Feb 22 back online at 14 UT but hardware problems developed: no data 51597 Feb 23 back online with good data at 15 UT 51598 Feb 24 possibly less editing than usual until 07 march -- check adjacent sources in schedule for systematic effects: schedule is NASA.FEB.00a in the sched directory under gbidata on sadira.gb.nrao.edu (see entry above under 51369 for anonymous ftp to sadira) 51607 Mar 4 GBI off source after 9.6h UT due to encoder problem. 51611 Mar 08 cal difficult (amplitudes dropping) 51614 Mar 11 R-R correlator dropping out again this week 51619 Mar 16 rain affecting 8 GHz 51620 Mar 17 more rain but 2-RR correlator dropping out less 51621 Mar 18 8-RR starting to drop out 51622 Mar 19 8-RR consistently dropping out 51624 Mar 21 snow on dishes and off-line 12-14 UT 51625 Mar 23 good data quality 51626 Mar 23 good data quality 51630 Mar 27 2 GHz L-L dropped out at 19 UT 51631 Mar 28 off-line for snow at 20 UT 51632 Mar 29 back online at 13:30 UT 51633 Mar 30 good data quality but offline after weekly maintenace in order to repair declination drive system 51634 Mar 31 repairs will continue monday 51637 Apr 03 back online at 15 UT 51639 Apr 05 power glitches interrupting operations 51640 Apr 06 good data but problems at 10 UT 51641 Apr 07 clutch problems at 3 UT -- offline until 15 UT problem again at 23:30 UT -- offline for weekend 51644 Apr 10 drive power supply blew again just after returning online 51645 Apr 11 online at 12 UT but repairs continue 51651 Apr 17 rain affecting 8 GHz 51658 Apr 24 back online following holiday weekend shutdown 61665 May 01 system offline at 12 UT for hardware relocation to new building -- may be offline 4-6 weeks