==================================== r1989 ===================================== Ag : Late start (18:48). Ma : Late start 20:52. Many scans missed (20:52-06:30). Halted (06:30-10:25). Wz : Antenna servo failure (07:48-07:55). No problems found for : Ht, Kk, Kv, Ns, Wn, Yg ================================ r1989ag START ================================= 2021-03-08 19:17:45 R1989 AGGO START Message Hello, R1989 has started from source: 0235+164 @ 18:48:59 This is AGGO first session after planned stopped for maintenance. _* *__*Tech report:*_ -Cryogenic temps achieved after seals and Coldhead Maintenance, installation of new receiver box with 4 lateral new Peltier based air conditioners and replaced of original 4 x Box-Peltier from Low Side. -Vacuum pressure below usual values in order of microbars instead of nanobars: It seems that Vacuum pressure sensor is damaged, since cryogenic temps could not be achieved in other way. -Ambient temperature is 32°C: VERY HIGH -RX BOX Temp: 25°C Low Stage=35K (quite high but usual with this ambient temperatures) Int. Stage=65K (Usual values with amb.temps around 30°C) -Nevertheless there was a drift between 1pps from mk5/formatter and 1pps from tac32(container) GNSS. A change to another 1pps tac32 reference from Masers Room was taken to solve this. -Also Mark5 BANK A reported a failure. So it was changed to BANK B and that also delayed the session start. Regards, Eng. Federico Salguero On 03/08/2021 12:57 PM, federico.salguero@aggo-conicet.gob.ar wrote: > > Hello Hayo, > Aggo will participate today in R1989 but with reserve. Unfortunately > during the weekend cryogenic temps in both stages were achieved but > vaccum pressure measure is still undesired. Vaccum pressure is stable > in the order of microbars but not in the order of nanobars wich are > the usual figures. Im not very positive on this. I think vaccum > pressure may colapse and cryogenic temps will be lost in the end. > Please find me when you arrive to the Observatory. > Regards, > > Federico S. > > > > On Mon, Mar 1, 2021 at 03:06, "Thomas, Cynthia C. (GSFC-61A.0)[NVI > INC]" wrote: > > Hi Federico, > > Please let us know as soon as possible if AGGO will be ready to > participate in > the R1989 session on March 8. I am making the schedule file and > need to know if > I should include AGGO. > > Thanks, > > Cynthia > > -----Original Message----- > From: Federico Salguero > > Sent: Thursday, February 11, 2021 5:51 PM > To: Thomas, Cynthia C. (GSFC-61A.0)[NVI INC] > > Cc: Behrend, Dirk (GSFC-61A.0)[NVI INC] ; > Hayo Hase >; Augusto M. Cassino > >; > torben.schueler@bkg.bund.de ; > Claudio Brunini > > Subject: [EXTERNAL] AGGO Start Activities postponed until first > week of MARCH > > Hello Cindy, > > I would like to inform you that some tasks related to the > installation of new receiver box has been delayed. > > Principally due to bad weather, but also because some mechanical > adjustments are needed. New system main power and backup, is still > waiting for mechanical installation end. > > So deadline of 15th February is too much optimistic. I think we > need at least 15 days more to overcome every issue left. > > Vacuum leakage maintenance is done and also waiting mechanical > installation end in order to test new seals and complete cryogenic > system behavior. > > Sorry for the inconvenience. Good news are that despite the delay, > tasks are developing great and no major problems have arisen yet. > > Eng. Federico Salguero > -- Ing. Federico Salguero Coordinador VLBI - AGGO - Conicet ================================ r1989ag START ================================= 2021-03-08 21:31:44 Session R1989 AGGO started late Due to encoder elevation malfunction, session R1989 started at 20:53:06 UTC on source 3C371. Regards F. Ambrico ================================= r1989ag STOP ================================= 2021-03-09 17:05:44 r1989, AGGO, Stop-message Session r1989 stop message for AGGO. ------------------------------------ Comments: Scans from 067-1700a to 067-1841 inclusive, were lost due to synchronism trouble. First source: 0235+164 @ 18:48:59 (Scan 067-1848) Disk Inventory: A 0, B 0, C 0, D 0, E 0, F 0, G 0, H 0, (other larger) 0 Observation finished at: 16:59:55 UT ================================ r1989ht READY ================================= 2021-03-08 14:04:15 r1989, Hart15M, Ready-message Session r1989 ready message for Hart15M. ---------------------------------------- Comments: Hart15M is ready to start R1989. FS has been upgraded to 10.0.0. Session is being operated remotely. First source: 0235+164 at 17:00:00 UT FMOUT-GPS: 3.0660 microseconds Wx: Temperature (C): 28.9 Pressure (mBar): 859.0 Humidity (%): 32.7 Sky Conditions: 10-20% cloud cover Cable difference is: na Pointing values: na Tsys (x1/s/x2): 40.6/51.4/48.6 ================================ r1989ht START ================================= 2021-03-08 17:00:00 r1989, Hart15M, Autostart-message Session r1989 auto-start message for Hart15M. --------------------------------------------- Started recording with source: 0235+164 at 067.17:00:00 UT ================================= r1989ht STOP ================================= 2021-03-09 17:01:06 r1989, Hart15M, Stop-message Session r1989 stop message for Hart15M. --------------------------------------- Comments: Hart15M has completed R1989. All scans recorded successfully. Weather was clear to mostly clear through most of the session, had more significant cloud towards the end. Data will be e-shipped to Bonn. Disk Inventory: A 0, B 2, C 0, D 1, E 1, F 0, G 3, H 0, (other larger) 6 Observation finished at: 16:59:55 UT ================================ r1989kk READY ================================= 2021-03-08 17:28:51 r1989, Kokee Park 20m, Ready-message Session r1989 ready message for Kokee Park 20m. ----------------------------------------------- First source: 1334-124 at 067/1700:00 UT FMOUT-GPS: +4.63 microseconds Wx: Temperature (C): 12.7 Pressure (mBar): 889.9 Humidity (%): 98.9 Sky Conditions: many stars visible Cable difference is: longer cable makes the reading smaller by 51.7 microseconds and is nominal Pointing values: SEFD X/S Source Az/El Offset1 Offset2 2077/713 virgoa 271/30 0.013 0.015 1908/746 cygnusa 53/1384 -0.003 -0.000 Tsys (x1/s/x2): 86/38/87 ================================ r1989kk START ================================= 2021-03-08 17:29:02 r1989, Kokee Park 20m, Autostart-message Session r1989 auto-start message for Kokee Park 20m. ---------------------------------------------------- Started recording with source: 1334-127 at 067.17:00:00 UT ================================= r1989kk STOP ================================= 2021-03-09 17:39:37 r1989, Kokee Park 20m, Stop-message Session r1989 stop message for Kokee Park 20m. ---------------------------------------------- Comments: Diskpack USN-0177 will be sent out via fedex AWB# 7730 6877 5855. Disk Inventory: A 0, B 0, C 0, D 9, E 4, F 0, G 0, H 2, (other larger) 6 Observation finished at: 068/1659:55 UT ================================ r1989kv START ================================= 2021-03-09 00:14:34 R1989, Sejong, start-message Session R1989 start-message for Sejong(Kv) Started recording with source 1334-127 at 067/17:00:00 (UT) FMOUT-GPS: -33.4 usec Wx: Temperature (C) -3.7 Pressure (hPa) 999.6 Humidity (%) 92.4 Point values SEFD S/X1/X2 AZ/EL Source Offset1 Offset2 3609/919/805 320/44.5 cas-a 0 +0.08 ================================= r1989kv STOP ================================= 2021-03-10 00:12:50 R1989, Sejong, Stop-message Sejong finished R1989. All scans are recorded. FMOUT-GPS: -33.4 usec ================================ r1989yg READY ================================= 2021-03-08 12:10:13 r1989 Yarragadee (Yg), ready message Session r1989 ready message for Yarragadee (Yg) ----------------------------------------------------------- First source: 1334-127 at 17:00:00 UT Formatter to GPS difference (fmout-GPS) is 10.7698 us at 067.12:09:43 UT Weather: Temperature (C): , Pressure (hPa): , Humidity (%): Additional operator comments (if any): clear sky Pointing results: SEFD S/X Source Az/El Offset (xEl) Offset (El) ----/---- pictora 216.1/67.8 0.025 -0.037 Tsys (S/X): Fringe check: Source: Array: Result: Additional Comments: Additional setup notes (OK = done, NOK = not checked/done): ----------------------------------------------------------- Checklist "Before observation" Sent by Jay (user alias: oper(2)) System: Schedule file prepared OK Signals: RF and IF signal paths configured OK DBBC: Server software running OK DBBC: pps_sync sent (if reconfigured) OK DBBC: client software NOT running on DBBC OK DBBC: IFs correctly selected OK DBBC: Frequency settings correct OK Time: Maser ok OK Mark5: dim software running OK Mark5: Time correct (ntpq) OK Mark5: recording mode set (e.g. proc=xxxx; ready_disk) OK Mark5: reported VSNs agree with printed labels OK Mark5: configured (e.g. setupsx) OK Mark5: Times OK (i.e. mk5=dot? fmset may be required) OK Time: Field system time aggrees with station time (fmset) OK Time: Maser to GPS difference in usec (maserdelay command. Enter value@day/time) (value=+1.10806E-005@2021.067.12.07:29.03) OK Time: Formatter out to GPS difference in usec (clkoff command. Enter value@day/time) (value=+1.07673E-005@2021.067.12.07:24.30) OK Time: delays OK, stable and within 1us (clkoff, maserdelay) OK Mark5: test recording OK (scan_check and autocorrelation) OK Tsys: systemp12 command working and Tsys looking OK (S ~85-95, X ~80-90) OK Antenna: pad clear of obstructions OK Antenna: has a kangaroo pressed the pedestal e-stop button? OK Antenna: Time OK (i.e. SNTP server OK) OK Antenna: in remote mode OK Antenna: Pointing and SEFD checked (put comment in the log, including source used, Az, El, offsets) (value=11:50:06#fivpt#xoffset 216.0934 67.7916 0.02506 -0.03659 0.02709 0.00713 1 1 7u pictora) OK Meteorology: Weather conditions ok (enter short meteorological report) (value=clear sky) NOK System: Fringe Check Done? (Indicate if S and X-band fringes were detected) NOK Skype chat with other stations started NOK Additional notes: University of Tasmania Electronic Communications Policy (December, 2014). This email is confidential, and is for the intended recipient only. Access, disclosure, copying, distribution, or reliance on any of it by anyone outside the intended recipient organisation is prohibited and may be a criminal offence. Please delete if obtained in error and email confirmation to the sender. The views expressed in this email are not necessarily the views of the University of Tasmania, unless clearly intended otherwise. ================================ r1989yg START ================================= 2021-03-08 17:04:37 r1989, Yarragadee (Yg), start message Session r1989 start message for Yarragadee (Yg) ----------------------------------------------------------- Started recording with source: 1334-127 at 067/17:00:00 UT Comments: Experiment started OK Regards, Jay University of Tasmania Electronic Communications Policy (December, 2014). This email is confidential, and is for the intended recipient only. Access, disclosure, copying, distribution, or reliance on any of it by anyone outside the intended recipient organisation is prohibited and may be a criminal offence. Please delete if obtained in error and email confirmation to the sender. The views expressed in this email are not necessarily the views of the University of Tasmania, unless clearly intended otherwise. ================================= r1989yg STOP ================================= 2021-03-09 17:10:23 Yarragadee has completed r1989 Yarragadee has completed r1989 The log and procedure files from experiment r1989 have been copied to ivs.bkg.bund.de: Formatter (H-maser) leads GPS by 10.9433 microsec at 2021.068.16:51:06.04 Additional experiment notes: Recorded 1536.18 GB to module TR-00020 using the Mark5B+ recorder. The Module is being sent to bonn using eTransfer. Known problems: no Missed Scans: no Observers: Jay,Warren,Mas,Pradyumna Regards, Pradyumna Comments from the log: University of Tasmania Electronic Communications Policy (December, 2014). This email is confidential, and is for the intended recipient only. Access, disclosure, copying, distribution, or reliance on any of it by anyone outside the intended recipient organisation is prohibited and may be a criminal offence. Please delete if obtained in error and email confirmation to the sender. The views expressed in this email are not necessarily the views of the University of Tasmania, unless clearly intended otherwise. ================================= r1989yg WIKI ================================= 2021-03-08 12:14:00 r1989 Yarragadee 12m Disk VSN: TR-00020/2000 1700UT Experiment started okay (Jay) ================================ r1989ns READY ================================= 2021-03-08 16:39:27 r1989, Ny-Alesund 13m NS, Ready-message Session r1989 ready message for Ny-Alesund 13m NS. -------------------------------------------------- First source: 0235+164 at 17:00 UT FMOUT-GPS: 20.137 microseconds Wx: Temperature (C): -5.6 Pressure (mBar): 1015.7 Humidity (%): 71 Sky Conditions: cloudy Cable difference is: NA Pointing values: NA Tsys values: NA ================================ r1989ns START ================================= 2021-03-08 17:00:10 r1989, Ny-Alesund 13m NS, Autostart-message Session r1989 auto-start message for Ny-Alesund 13m NS. ------------------------------------------------------- Started recording with source: 0235+164 at 067.17:00:00 UT ================================= r1989ns STOP ================================= 2021-03-09 17:02:24 r1989, Ny-Alesund 13m NS, Stop-message Session r1989 stop message for Ny-Alesund 13m NS. ------------------------------------------------- Comments: Ns observed as tagalong Disk Inventory: A 0, B 0, C 0, D 6, E 0, F 0, G 0, H 0, (other larger) 10 Observation finished at: 16:59:55 UT ================================================================================