78259001 2021 243 01:00 1 99 Station servers stopped for 3.5 hours to switch to new file server, updated and cleaned server directories on SOS and SLRS. 
78259001 2021 237 23:00 1 05.05 Coude path alignment to correct for missed step in previous alignment work. T/R box aligned as well and lenses within the box have been aligned  
78259001 2021 231 23:00 0 05.05 Laser return system and coude path alignment. No sky test after alignment due to overcast weather  
78259001 2021 230 00:00 1 05.05 Laser alignment work continues, fixed divergence and power issues.  
78259001 2021 214 03:00 1 05.05 Adjustments to the laser path. Refocused the optics in the middle section of the T/R box. Pinhole camera optics aligned after being removed from the return path.  
78259001 2021 211 01:00 0 05.05 Laser team aligning the Laser path and Coude path. Including M3 on the telescope  
78259001 2021 209 01:00 1 09.02.01 Symmetricon GPS unit successfully synced time and timeserver is back to normal setup  
78259001 2021 208 07:00 2 09.02.01 Symmetricon GPS unit reinstalled but could not lock signal with satellites and internal hardware.  
78259001 2021 207 01:01 0 09.02.01 Symmetricon GPS unit failed after power outage, unit sent down to Symonston for repairs.  
78259001 2021 175 00:00 1 05.05 Maintenance/replace the diode pump. Oscillator pump diode replaced. Current changed from 2.1A to 1.5A with 850mW power output for stable mode.  
78259001 2021 166 07:30 1 05.05 Adjustment made to SLR laser oscillator, increased pump diode current from 2.01A to 2.11A. Increasing the power output from 0.8W to 0.86W.  
78259001 2021 159 04:30 1 05.05 System monitor indicated pulse energy increased to 10.712 mj then up to 12.44mj and become fluctuating. Investigation needed to find out the root causes.  
78259001 2021 145 04:30 1 05.05 Realignment of oscillator SESAM, regen amp, power amp, stabilised mount locking to correct start diode signal fluctuation issue.  
78259001 2021 126 23:30 1 05.05 The laser team carried out laser table alignment trying to improve the laser stability and increase the pulse energy.  
78259001 2021 108 23:30 1 05.05 T/R disk and spinning shutter failed to synchronize due to poor 100MHz signal from the laser oscillator, as a result of a depleted SESAM. Operations resumed after a new SESAM holder was prepared and installed.  
78259001 2021 071 01:30 1 05.05 The laser team replaced SLR power amplifier. After swapping the gain modules and realigning the power amp mirrors, the total of output is around 7.7mj of 532nm.  
78259001 2021 035 03:00 1 05.05 Start detector trigger threshold level and position adjusted, and diffuser replaced. This caused the system delay to change by 1ns and reduce tram track peak.  
78259001 2021 033 01:30 2 08.02 System delay shift found excessive following regen diode replacement due to incorrect processing of a tram-track. Data reanalysed and database updated. SD value of 79.3075 changed to 79.7879ns.  
78259001 2021 024 22:30 1 05.05 Replaced the regen diode pump module due to consistent low laser energy output.  
78259001 2020 270 05:30 1 05.05 SLR system failed since the spinning disks could not synchronize, due to poor laser oscillator signal. The laser oscillator was re-aligned on the 28th, and system operations resumed.  
78259001 2020 259 05:00 1 05.05 SLR system stopped ranging. Laser oscillator unable to generate stable pulses due to increase in clean room temperature caused by other laser experiments.  
78259001 2020 237 02:00 0 08.02 Vaisala temperature and humidity probe sent to Finland for calibration.  
78259001 2020 140 21:00 0 99 Replaced the existing azimuth control panel by a new one with three latest xenus digital servo drive.  
78259001 2020 119 23:00 1 04.01 All 1m telescope coude mirrors, M3-7, except M4 were replaced with re-coated mirrors and coude path aligned. M4 was only cleaned.  
78259001 2020 115 02:00 1 05.05 Laser power recently reduced to 3-4 mJ. PA pump diode found to be at end of life.  
78259001 2020 042 08:15 0 05.05 T/R disk and spinning shutter not synchronized. Realigned laser beam.  
78259001 2020 031 11:15 1 99 MTA Chiller tripped due to overheating to cause both clean rooms temperature increased significantly. Laser stopped ranging. Laser Alignment carried out.  
78259001 2020 003 23:15 0 05.05 Extreme temperature caused the MTA Chiller to shut down. Clean room temperature increased significantly. Laser stopped ranging.  
78259001 2019 179 06:00 1 05.05 SLR laser high power intensity fluctuating. Resolved after adjusting the oscillator.  
78259001 2019 169 00:00 1 05.05 Spinning disk assembly removed for bearings to be replaced by Austec. Rear face of the disk suffered minor damage in the process. System returned to service.  
78259001 2019 149 02:00 1 05.05 SLR system stopped due to failure of the T/R spinning disk bearings.  
78259001 2019 132 23:30 0 11.02 SLR stopped while the aircraft detection camera was installed on the 1m telescope.  
78259001 2019 094 06:40 1 99 Installed a new GPS antenna for the temporary unit to solve time bias error in data. The temporary unit configured to supply time to the systems, while the old GPS connected as primary reference for the 1PPS and 10MHz outputs.  
78259001 2019 056 05:30 1 05.05 Due to damage to the SESAM the oscillator was not working properly preventing the spinning disk from syncing. A good area of the SESAM identified, sufficient to obtain a good signal from the oscillator.  
78259001 2018 343 23:00 0 12.03.05 The new Vaisala AWS temperature and humidity probe was installed and rain sensors were cleaned.  
78259001 2018 331 23:00 1 05.05 T/R box spinning disk could not synchronize. Timing signal noisy. Laser oscillator timing adjusted and laser system checked and aligned.  
78259001 2018 331 06:00 1 08.02 Installed new vernier coefficients.  
78259001 2018 278 01:10 0 99 The primary, secondary and tertiary (M1,M2,M3) mirrors were snow cleaned.  
78259001 2018 264 04:00 2 99 Various applications and servers such as siteEditor, targetEditor, Profits, elsetterCPF, elsetterTLE and BRDfileSever and postProcessorServer were updated to include minor changes.  
78259001 2018 198 00:00 2 99 System stopped while two new diode pump modules installed in the SLR power amplifier. Power now approximately 10mJ.  
78259001 2018 164 00:00 2 99 LASS was rebuilt with spare machine by I.T. department. Ranging resumed.  
78259001 2018 120 08:00 2 99 Major update to v3-0-0 for the following servers and apps. BRDFileServer, FileTransferServer, PostProcessingServer, Profits, Site/Target/SysCal/Minico editors, CPF & TLE elsetters, ReportManager, FileDirector, BRDFileViewer  
78259001 2017 320 01:00 3 99 The timing cable from the Delay Generator to the SPAD was replaced with a new type of cable. Expected change to System Delay. Also installed was a new start diode monitor and energy meter monitor. Device broswer updated.  
78259001 2017 305 04:00 4 99 Profits7 is applying incorrect refraction corrections to files generated by BRDFileServer@SLR. In particular to calibration piers as refraction is corrected on local targets.  
78259001 2017 184 05:00 4 99 New laser system installed, with a new standing wave cavity regenerative amplifier stage, and power amplifier stage located within a closed enclosure, and mounted on a carbon fibre breadboard. SLR low power output re-established.  
78259001 2017 176 23:50 4 99 SLR System stopped to begin laser upgrade.  
78259001 2017 024 07:00 2 99 New mets server installed to manage messaging from new AWS310 mets station and associated PWD and rain detector sensors,  
78259001 2017 024 00:00 2 99 Vaisala AWS310 MET station installed, including PWD sensor and two DRD11A rain detectors. Power supplied from GAs 24V supply.  
78259001 2017 023 23:00 1 99 DORIS Mets system unplugged and removed from the roof mast as agreed with CNES.  
78259001 2016 188 05:00 4 99 Damaged SLR laser power amplifier rod replaced. Much better beam quality evident, but no significant increase to power level made pending availability of a calibrated energy meter.  
78259001 2016 185 14:00 4 99 Major upgrade of post processing module "Profits" and associated BRD file server. Raw range data now stored using Googles protocol buffer format. Version 7.0. 
78259001 2015 002 09:50 3 99 Mets temperature and humidity data in error. Incorrect values received from the Vaisala MAWS logger. Pressure data OK. Good data received after logger reset.  
78259001 2014 363 03:30 3 99 Mets temperature and humidity data in error. Incorrect values received from the Vaisala MAWS logger. Pressure data OK. Good data received after logger reset.  
78259001 2014 230 08:00 1 99 Site stopped to install Package 12 of Control System Software. Package 12. 
78259001 2014 190 00:00 3 99 Installed new Profits processing module that includes start diode compensation. Version 6.2. 
78259001 2014 148 01:15 2 99 System stopped while laser power amplifier upgraded. Thales controller replaced with Northrup Grummond e-Drive and new pumps heads installed. New laser server and power amplifier installed.  
78259001 2014 126 00:00 3 99 Major upgrade of post processing module "Profits" installed, including a new system calibration database and a new report generator. Version 6.1. 
78259001 2014 073 01:00 3 99 T/R Box spatial filter 0.4mm pinhole replaced with 0.8mm pinhole.  
78259001 2014 072 07:59 1 99 Server PCs (SSS and DSS) were replaced with rack mounted PCs (SLRS and DLRS) with Win7 OS.  
78259001 2013 351 01:00 2 99 Pulse slicer controller (with replaced potentiometers) installed in 19" rack.  
78259001 2013 346 01:00 2 99 System stopped to rebuild the laser regen amplifier stage with a new 25mm solid base plate.  
78259001 2013 325 07:00 2 99 Mets in error with temperature and humidity out of range. Mets reset successfully on 22/11/2013. Manual entry of Mets data used for published data.  
78259001 2013 311 03:00 1 99 SysControl PC removed from operations and replaced by the SOS( System Operations Server) PC. Serial and CAN inputs connected via the MOXA serial to Ethernet unit.  
78259001 2013 301 03:00 1 99 New T/R disk installed and phase adjusted.  
78259001 2013 162 01:59 1 99 Replaced Windows XP based SLR Control Computer (SCC) and SLR Analysis computers with new Windows 7 based PCs.  
78259001 2013 077 01:00 2 99 Installed new laser server software.  
78259001 2012 334 01:00 1 99 Regen Pockels cell replaced by an old unit and system restarted operations.  
78259001 2012 121 01:00 2 99 Calibrated collision band and installed new parameters.  
78259001 2012 103 01:00 2 99 System shutdown for replacement coude optic M2.  
78259001 2012 102 01:00 2 99 System shutdown for coude optics replacement. M3,M4,M5,M6 replaced, M7 cleaned.  
78259001 2012 093 01:00 1 99 New Pockels cell as well as driver installed.  
78259001 2012 082 01:00 1 99 New pockels cell and driver received. New driver installed.  
78259001 2012 067 01:00 1 99 High voltage Pockels cell driver re-installed due to poor signal.  
78259001 2012 061 01:00 1 99 Repaired (low voltage) Pockels cell driver installed.  
78259001 2012 060 01:00 4 99 Reprocessed data from 13-20th February to eliminate excessive mets records.  
78259001 2012 004 01:00 3 99 Vaisala MAWS logger reinstalled successfully.  
78259001 2011 335 01:59 2 99 New SHG crystal installed. Beam divergence increased to reduce energy density on the crystal.  
78259001 2011 335 01:00 1 99 Beam expander mirror replaced.  
78259001 2011 323 01:00 1 99 Replacement SHG crystal also found to be degraded. Laser beam diameter enlarged to avoid further damage.  
78259001 2011 321 01:59 2 99 Current Pockels cell (low voltage) driver failed. Replaced by serviced high voltage driver unit.  
78259001 2011 320 01:00 1 99 SHG crystal replaced with an old spare crystal, while waiting for delivery of a new crystal.  
78259001 2011 279 01:00 3 99 Vaisala WXT520 met station installed as temporary replacement of existing MAWS. Met data collected automatically.  
78259001 2011 271 01:00 3 99 Software upgrade of ranging server to improve collection of vernier calibration measurements.  
78259001 2011 269 01:00 4 99 New Profits installed to support manual processing with manual entry of mets data. Version 5.2.7. 
78259001 2011 258 01:00 2 99 Software upgrade of ranging server to improve collision band avoidance.  
78259001 2011 252 01:00 2 99 New Pockels cell installed after the regen amplifier stage to filter pre-pulses.  
78259001 2011 227 01:00 2 99 Regen Pockels Cell Driver Unit failed. Replaced by spare (low voltage) unit pending repair.  
78259001 2011 213 00:00 1 99 Minor upgrade of control system modules. Version 2.1.4. 
78259001 2011 196 01:00 2 99 All ILRS satellite names were modified to lower case in response to request from EDC.  
78259001 2011 171 01:00 1 99 New spinning disk mount and coupling installed.  
78259001 2011 144 03:00 2 99 New Semrock spectral filter installed in front of the CSPAD.  
78259001 2011 105 01:00 1 99 GA installed new Symmetricon 5071A Cesium atomic clock.  
78259001 2010 333 00:00 1 99 SLR regen chiller temperature sensor failed. Chiller replaced.  
78259001 2010 219 01:00 4 99 Incorrect timebias applied for a period.  
78259001 2010 188 03:00 1 99 Motor driving the T/R main disk failed. Replaced with a spare.  
78259001 2010 160 03:00 3 99 Modified scripts to automatically send *.NPT files in addition to *.NP files.  
78259001 2010 132 01:59 1 13.01 GA installed new DORIS equipment.  
78259001 2010 109 00:00 1 13.01 Installation of JAXA equipment completed and monitoring of QZS satellites commenced.  
78259001 2010 102 03:00 2 99 Old SLR tracking camera replaced and new camera system aligned on a star.  
78259001 2010 089 04:00 1 99 Installed new primary mirror with wide band coating in x5 beam expander.  
78259001 2010 040 01:59 4 99 New versions of Profits and auto post processor installed to fix identified mets bug. Version 5.2.6. 
78259001 2010 029 01:00 3 99 Increased laser power head current to increase laser power by approx 30%.  
78259001 2009 358 01:00 2 99 Positions of pier targets updated using new survey data. Approximately 1mm change in STN range.  
78259001 2009 315 01:59 2 99 New MRCS timing card installed.  
78259001 2009 314 23:00 1 99 Survey of 1m Telescope IVP completed by Geoscience Australia.  
78259001 2009 313 01:00 1 99 Survey of calibration piers performed by Geoscience Australia.  
78259001 2009 293 01:00 3 99 Installed new Vaisala static pressure head on mets mast.  
78259001 2009 259 01:00 4 99 Installed new post processing and Profits software. Version 5.2.5. 
78259001 2009 246 01:00 4 99 Installed updated post processing software and scripts. . 
78259001 2009 221 00:00 1 99 Minor upgrade of control system modules. Version 2.1.3. 
78259001 2009 216 01:00 2 99 Minor upgrade of control system modules installed. Version 2.1.3. 
78259001 2009 205 01:00 2 99 Reinstalled telescope secondary mirror with new coating.  
78259001 2009 151 23:59 1 99 Minor upgrade of control system modules. Version 2.1.2. 
78259001 2009 107 01:59 1 99 Regen amplifier control system replaced by another spare unit.  
78259001 2009 051 01:00 4 99 Installed new version of post-processing and Profits software plus updated data transforms to address problems with data from passes crossing 00:00 UTC.  
78259001 2009 023 01:00 4 99 Commenced publication of data generated by automated post processing. Version 5.0. 
78259001 2008 354 01:00 4 99 New version of Profits installed.  
78259001 2008 351 01:00 2 99 New regen diode installed.  
78259001 2008 272 01:00 4 99 Commenced publishing data using new post processing application in manual mode. Version 5.0. 
78259001 2008 250 15:00 4 99 Commenced CRD report generation using local XML files.  
78259001 2008 102 01:00 1 99 SLR Coude path upgrade with new full thickness Coude mirrors on M7, M5 and M3  
78259001 2008 092 00:00 1 99 Minor upgrade of control system modules. Version 2.1.1. 
78259001 2008 030 00:00 1 99 SLR PA chiller failed. Chiller replaced.  
78259001 2007 284 01:00 3 99 Major software upgrade of all software servers and clients. Version 2.1. 
78259001 2007 219 01:00 3 99 Installed new vernier calibration test box for testing with new timing and ranging server software.  
78259001 2007 211 01:59 2 99 Adjusted laser cavity to decrease beam divergence.  
78259001 2007 184 01:00 5 99 Modifications for laser upgrade completed. Laser realignment commenced  
78259001 2007 171 01:00 4 99 Upgrade of SLR Laser power commenced. No operations available until completed.  
78259001 2007 141 01:00 1 99 Retroreflectors removed from all calibration piers, and provided to Geoscience Australia for offset calibration.  
78259001 2007 096 01:00 1 99 Installed the retro-reflector from STNE on the new STR06 pillar (named as pier target STNW), to be included in subsequent minicos.  
78259001 2007 061 01:00 2 99 Reinstallation of the ADL detectors completed and tested successfully using the ADL target on Mt Macdonald.  
78259001 2007 022 01:59 3 99 Installed and commenced testing of auto-tracking software modules.  
78259001 2006 269 01:00 1 99 Geoscience Australia installed new DORIS unit.  
78259001 2006 261 23:00 1 99 Survey of the 1m Telescope IVP completed by Geoscience Australia.  
78259001 2006 242 01:00 2 99 New DOR application installed to support use of CPF files. System changeover from IRVs to CPFs completed.  
78259001 2006 220 23:00 1 99 Survey of calibration piers conducted by Geoscience Australia.  
78259001 2006 213 01:00 4 99 Commenced routine operations using new software framework. Version 2.0. 
78259001 2006 123 01:00 2 99 ADL system detector mounting was modified.  
78259001 2006 011 01:59 4 99 Installed upgrade to LCH server to support ILRS pass restriction file, and an application to display Go/Nogo status while tracking a satellite. Report to JAXA on status of the station.  
78259001 2005 131 00:00 1 99 New dome window glass installed.