| SOD | Year | Day of Year |
Time of Day |
Data Impact | System | Description |
|---|---|---|---|---|---|---|
| 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 | 3 | 12 | Data related to the meteorological sensors, manufacter and model, have been corrected in the site LOG |
| 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 | 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 | 9.02 | GPS Time Standard used while the coaxial |
| 78244502 | 2014 | 064 | 00:00 | 2 | 9.01 | Symmetricom 8040C Rb. removed while the |
| 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 | 8 | New calibration values for CSPAD |
| 78244502 | 2005 | 049 | 00:00 | 2 | 6.01 | CSPAD is the only detector. PMT removed |
| 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. |
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