78244502 2023 325 10:00 3 99 Station is temporarily out of operation due to schedule infrastructure work on the building that houses the station, which are intended to coincide with the replacement/upgrade of the telescope mount and its control system. 
78244502 2022 242 10:00 1 6 Tomorrow 08/30 (242) at 10:00 UTC it is planned to modify the time of flight measurement system. To do this, the Time Interval Unit (TIU), Standford SR620, will be replaced by the Event Timer Unit (ETU), ET032. During the past months ILRS has evaluated our data and has characterized the comparison between both devices with results that show that the TIU (SR620) measures SHORTER than the ETU (A032) by ~10 mm. 
78244502 2022 111 10:00 1 8 The SPAD gate cable has been replaced. The calibration value has decreased by 100 ps. The last new mean calibration value is 144530 ps 
78244502 2022 055 10:00 1 6 A coaxial cable that belong to the detection pulse system and communicates the photodetector with the CFD is replaced, this modification changed by aprox 1ns the system delay 
78244502 2021 347 08:00 1 5 The pulse width value has been corrected in the CRDs. The correct value is 30 ps. 
78244502 2021 347 08:00 3 12 Data related to the meteorological sensors, manufacter and model, have been corrected in the site LOG 
78244502 2021 331 08:00 1 10 On November 27, Crd v2 file sending starts 
78244502 2021 281 10:00 1 10 On October 8, the criterion for generating Normal Points is modified. The minimum number of raw echoes required to generate an NP is reduced from 30 to 3. 
78244502 2021 250 10:00 1 10 On September 7 (10.00), the station begins to use the ILRS validated normal point generation program, orbitNP 
78244502 2021 141 10:00 2 6.01 A coaxial cable that communicates the SPAD signal with the Standford SR620 counter is replaced, this modification changed by 300 mm the system delay 
78244502 2021 138 10:00 0 6.01 A switch, that allows selecting between the two detectors C-SPAD and SP500, have been installed. This modification introduces a slight delay in the calibration value. 
78244502 2020 168 00:00 1 8 We detected that in our CRD the flight time was not corrected with the system delay. Also the ToF was not consistent with the flag indicator. On June 16th, we started to send CRDs with this error corrected. 
78244502 2018 213 00:00 1 5 Our laser equipment has been replaced by the EKSPLA model PL2251-10-SH (10 Hz - 30 ps). 
78244502 2016 289 00:00 2 7824 From Oct 15 onward due to maintenance and lack of supplies we will reduce our weekly schedule to fridays, saturdays and sundays. This will be maintained till new supplies are received. 
78244502 2014 306 00:00 1 5 Start photodiode in the old position again. 
78244502 2014 299 00:00 1 5 Replaced Glan-Taylor laser. 
78244502 2014 294 00:00 1 5 Changed position of start photodiode. 
78244502 2014 278 00:00 1 5 Replaced polarizer in the pulse selector of 
78244502 2014 272 00:00 2 6.01.02 Replaced TENNELEC 454 by same model. 
78244502 2014 228 00:00 3 8.04 Error in the target distance of calibration 
78244502 2014 189 00:00 2 4.04 New Spectral filter 2 Angs. 
78244502 2014 162 00:00 2 8.04 New calibration target. 
78244502 2014 140 00:00 2 4 Spectral filter 2Arms. replaced by the old 
78244502 2014 135 00:00 2 9.01.03 Symmetricom 8040C Rb operative again. 
78244502 2014 135 00:00 2 6 CSPAD repaired. 
78244502 2014 106 00:00 2 9.01 LMR400 Low Loss Coaxial Cable for 
78244502 2014 064 00:00 2 9.01 Symmetricom 8040C Rb. removed while the 
78244502 2014 064 00:00 2 9.02 GPS Time Standard used while the coaxial 
78244502 2014 049 00:00 2 4 Telescope mirrors recoated 
78244502 2012 065 00:00 2 8.03 New calibration target 
78244502 2011 152 00:00 2 9.01 Symmetricom 8040C Rb. frequency Standard 
78244502 2011 152 00:00 2 4 Telescope mirrors recoated 
78244502 2009 061 00:00 2 4 Telescope mirrors recoated 
78244502 2007 121 00:00 0 7 GLONASS tracking capability added. 
78244502 2005 232 00:00 2 4 Spectral filter 5Arms. replaced by a new (2Arms). 
78244502 2005 138 00:00 2 7 Range gate width modified. 
78244502 2005 049 00:00 2 6.01 CSPAD is the only detector. PMT removed 
78244502 2005 049 00:00 2 8 New calibration values for CSPAD 
78244502 2004 022 00:00 2 5 Repetition rate set to 10 Hz. 
78244502 2003 114 00:00 2 4 Telescope mirrors recoated 
78244502 2001 222 00:00 3 6.01 SR620C replaced HP5370A time counter 
78244502 2001 205 00:00 3 6.01 TENNELEC signal processing used at start only. 
78244502 2001 185 00:00 3 5 Pulse width set to 50 ps, max energy 
78244502 2001 024 00:00 3 6.01 CSPAD installed, for nightime observations.