ILRS Site and System Information Form
      International Laser Ranging Service

 0.   Form

      Prepared by (Full Name)    : Bea Vaquero
      Preparer E-mail            : b.vaquero@oan.es
      Date Prepared              : 2024-03-26
      Report Type                : UPDATE
      Site Log Format Version    : 2.0
      Site Log Revision          : 3


 1.   Identification of the Ranging System Reference Point (SRP)

      Site Name                  : YLARA (Yebes Laser Ranging)
      IERS DOMES Number          : 13420S021
      CDP Pad ID                 : 7817
      Subnetwork                 : Eurolas
      Description                : AZ EL Intersect
      Monument Description       : N.A.
      Monument Inscription       : N.A.
      Mark Description           : N.A.
      Date Installed             : 2023-05-10
      Date Removed               : 
      Geologic Characteristic    : Bedrock
      Additional Information     : Telescope assembly installed on a 
                                 : concrete pillar anchored to bedrock


 2.   Site Location Information

      City or Town               : Yebes
      State or Province          : Guadalajara
      Country                    : Spain
      Tectonic Plate             : Iberian/Eurasian
      Local Time (UTC +/- hours) : 1
      Approximate Position
        X coordinate          [m]: 4848747.267
        Y coordinate          [m]: -261792.740
        Z coordinate          [m]: 4123060.107
        Latitude            [deg]: 40.5245 N
        Longitude           [deg]: 3.0905 W
        Elevation             [m]: 919.616
      Survey Method              : Estimated from SLR observations
      Date Measured              : 
      Additional Information     : First coordinates estimation


 3.   General System Information

 3.01 System Name                : YLARA (Yebes Laser Ranging)
      4-Character Code           : YEBL
      CDP System Number          : 62
      CDP Occupation Number      : 01
      Eccentricity to SRP (if Not Identical With SRP)
        North                 [m]: 
        East                  [m]: 
        Up                    [m]: 
        Date Measured            : 
      Date Installed             : 2023-05-10
      Date Removed               : 
      Additional Information     : 


 4.   Telescope Information

 4.01 Receiving Telescope Type   : Ritchey-Chretien
        Aperture              [m]: 0.7
        Mount                    : AZ-EL
      Date Installed             : 2023-05-06
      Date Removed               : 
      Xmitting Telescope Type    : Galilean Beam Expander
        Aperture              [m]: 0.11
      Date Installed             : 2023-05-06
      Date Removed               : 
      Tracking Camera Type       : CMOS
        Model                    : ASI-120MM-S
        Manufacturer             : ZWO
        Field of View       [deg]: 
        Minimum Magnitude   [mag]: 
      Date Installed             : 2023-05-10
      Date Removed               : 
      Transmit/Receive Path      : SEPARATE
      Transmit/Receive Switch    : N.A.
      Max Slew Rate Az    [deg/s]: 12
      Max Slew Rate El    [deg/s]: 12
      Max Used Tracking Rate Az  : 
      Max Used Tracking Rate El  : 
      Telescope Shelter          : Dome
      Daylight Filter Type       : Bandpass interferencial filter
      Dayl. Filt. Bandwidth  [nm]: 0.4 - 0.25
      Adjustable Attenuation     : 
      Adjustable Field of View   : Yes (20-300 arcsec in diam.)
      Transmit Efficiency        : 
      Receive Efficiency         : 
      Date Installed             : 2023-05-10
      Date Removed               : 
      Additional Information     : Tracking camera, Field of View [deg]
                                 : 0.088 H X 0.066 V
                                 : Dayl. Filt. Bandwidth [nm]
                                 : 0.4 nm @ 1064 nm / 0.25 nm @ 532 nm
                                 : Transmit Efficiency 
                                 : min 80% (@ 1064nm & 532nm)
                                 : Receive Efficiency 
                                 : 87.8% @ 1064nm & 88.2% @ 532nm


 5.   Laser System Information

 5.01 Laser Type                 : ND:YAG
      Model                      : Compiler Compact 532/1064
      Manufacturer               : Passat Ltd
      Number of Amplifiers       : 1
      Primary Wavelength     [nm]: 1064
      Primary Maximum Energy [mJ]: 0.551
      Secondary Wavelength   [nm]: 532
      Secondary Max. Energy  [mJ]: 0.362
      Xmit Energy Adjustable     : YES
        Additional Information   : Information @ 1064 nm
      Pulse Width (FWHM)     [ps]: 8.5
      Max. Repetition Rate   [Hz]: 1000
      Fullw. Beam Divergence  ["]: 
        Theoretical Beam Div     : 
        Measured Beam Div        : 
          Method Used            : 
          Additional Information : 
      Final Beam Diameter     [m]: 0.065
      Eyesafe                    : NO
      Eyesafe Standard           : N.A.
      Polarization on Exit       : Linear
      Laser Fire Control         : 
      Laser Energy Monitor       : 
      Start Diode Type           : Pin Diode
        Manufactorer             : Osram
        Model                    : SFH229
        Quantum Efficiency    [%]: 
        Rise/Fall Time       [ps]: 
        Date Installed           : 2023-05-10
        Date Removed             : 
        Signal Processing        : NIM Discriminator
          Manufacturer           : DiGOS Potsdam GmbH
          Model                  : CMP9625P-A1-018-25-12S-0102
          Date Installed         : 2023-05-10
          Date Removed           : 
          Additional Information : 
      Date Installed             : 2023-05-10
      Date Removed               : 
      Additional Information     : 

 5.02 Laser Type                 : ND:YAG
      Model                      : Compiler Compact 532/1064
      Manufacturer               : Passat Ltd
      Number of Amplifiers       : 1
      Primary Wavelength     [nm]: 1064
      Primary Maximum Energy [mJ]: 0.551
      Secondary Wavelength   [nm]: 532
      Secondary Max. Energy  [mJ]: 0.362
      Xmit Energy Adjustable     : YES
        Additional Information   : Information @ 532 nm
      Pulse Width (FWHM)     [ps]: 7
      Max. Repetition Rate   [Hz]: 1000
      Fullw. Beam Divergence  ["]: 
        Theoretical Beam Div     : 
        Measured Beam Div        : 
          Method Used            : 
          Additional Information : 
      Final Beam Diameter     [m]: 0.065
      Eyesafe                    : NO
      Eyesafe Standard           : 
      Polarization on Exit       : Linear
      Laser Fire Control         : 
      Laser Energy Monitor       : 
      Start Diode Type           : Pin Diode
        Manufactorer             : Osram
        Model                    : SFH229
        Quantum Efficiency    [%]: 
        Rise/Fall Time       [ps]: 
        Date Installed           : 2023-05-10
        Date Removed             : 
        Signal Processing        : NIM Discrminator
          Manufacturer           : DiGOS Potsdam GmbH
          Model                  : CMP9625P-A1-018-25-12S-0102
          Date Installed         : 2023-05-10
          Date Removed           : 
          Additional Information : 
      Date Installed             : 2023-05-10
      Date Removed               : 
      Additional Information     : 

 6.   Receiver System

 6.01.01 Primary Chain
         Wavelength          [nm]: 1064
         Detector Type           : SPAD
           Manufacturer          : RMY Electronics / IWF Graz
           Model                 : PGA-200-1064
           Quantum Efficiency [%]: 30
           Nominal Gain          : N.A.
           Rise Time         [ps]: 
           Jitter (Single PE)[ps]: 
           Field of View Diam ["]: 
           Date Installed        : 2023-05-10
           Date Removed          : 
         Amplifier Type          : N.A.
           Manufacturer          : 
           Model                 : 
           Gain                  : 
           Bandwidth             : 
           Date Installed        : 
           Date Removed          : 
           Additional Information: 
         Signal Processing       : N.A.
           Manufacturer          : 
           Model                 : 
           Date Installed        : 
           Date Removed          : 
           Amplitude Measurement : 
           Return-Rate Controlled: YES
           Mode of Operation     : Single
           Additional Information: 
         Time of Flight Observ.  : Event
           Manufacturer          : EvenTech
           Model                 : A033-ET/USB
           Resolution        [ps]: 1
           Precision         [ps]: 3
           Date Installed        : 2023-05-10
           Date Removed          : 
         Additional Information  : 

 6.02.01 Secondary Chain
         Wavelength          [nm]: 532
         Detector Type           : CSPAD
           Manufacturer          : PESO Consulting GmbH
           Model                 : K14 series SPAD
           Quantum Efficiency [%]: 40
           Nominal Gain          : N.A.
           Rise Time         [ps]: 3000
           Jitter (Single PE)[ps]: 50
           Field of View Diam ["]: 
           Date Installed        : 2023-05-10
           Date Removed          : 
         Amplifier Type          : N.A.
           Manufacturer          : 
           Model                 : 
           Gain                  : 
           Bandwidth             : 
           Date Installed        : 
           Date Removed          : 
           Additional Information: 
         Signal Processing       : NIM Discriminator
           Manufacturer          : DiGOS Potsdam GmbH
           Model                 : CMP9625P-A1-018-25-12S-0102
           Date Installed        : 2023-05-10
           Date Removed          : 
           Amplitude Measurement : N.A.
           Return-Rate Controlled: YES
           Mode of Operation     : 
           Additional Information: 
         Time of Flight Observ.  : Event
           Manufacturer          : EvenTech
           Model                 : A033-ET/USB
           Resolution        [ps]: 1
           Precision         [ps]: 3
           Date Installed        : 2023-05-10
           Date Removed          : 
         Additional Information  : 

 6.03.01 Tertiary Chain
         Wavelength          [nm]: 
         Detector Type           : 
           Manufacturer          : 
           Model                 : 
           Quantum Efficiency [%]: 
           Nominal Gain          : 
           Rise Time         [ps]: 
           Jitter (Single PE)[ps]: 
           Field of View Diam ["]: 
           Date Installed        : 
           Date Removed          : 
         Amplifier Type          : 
           Manufacturer          : 
           Model                 : 
           Gain                  : 
           Bandwidth             : 
           Date Installed        : 
           Date Removed          : 
           Additional Information: 
         Signal Processing       : 
           Manufacturer          : 
           Model                 : 
           Date Installed        : 
           Date Removed          : 
           Amplitude Measurement : 
           Return-Rate Controlled: 
           Mode of Operation     : 
           Additional Information: 
         Time of Flight Observ.  : 
           Manufacturer          : 
           Model                 : 
           Resolution        [ps]: 
           Precision         [ps]: 
           Date Installed        : 
           Date Removed          : 
         Additional Information  : 


 7.   Tracking Capabilities

 7.01 Satellites
        Very Low Alt (<400 km)   : YES
        Low Altitude (400-2000)  : YES
        LAGEOS/LARES             : YES
        GLONASS                  : YES
        Etalon                   : YES
        GNSS                     : YES
        Geosynchronous           : YES
        Moon                     : NO
      Ave. Pass Switch Time   [s]: 
      Average values for LAGEOS
        Single Shot RMS      [mm]: 
        # of Obs per NP          : 1000
        Use of Semi-trains       : N.A.
        # of Semi-train Tracks   : 
      Range Gate Width       [ns]: 0 - 1000
      Beam Pointing Accuracy  ["]: 4.8
      Angle Encoder Resolution["]: 0.0048
      Min. Tracking Elev.   [deg]: 20
      Laser Polarization @emitter: Linear
      Operation
        Months per Year          : 12
        Days per Week            : 7
        Hours per Day            : 24
        Staff per Shift          : 1
        System Shared With       : Nothing
        Time Allocated to SLR [%]: 100
        Remotely Controllable    : Yes
      Tracking Restrictions
        Go/No-go flag            : YES
          Satellite Verification : 
          Date Verified          : 
        Maximum elevation        : YES
          Satellite Verification : 
          Date Verified          : 
        Pass segments            : YES
          Satellite Verification : 
          Date Verified          : 
        Schedule segments        : YES
          Satellite Verification : 
          Date Verified          : 
        Maximum laser power limit: YES
          Satellite Verification : 
        Date Verified            : 
      Date First Applicable      : 2023-05-18 01:23 UT
      Date Last Applicable       : 
      Additional Information     : 


 8.   Calibration

 8.01 Calibration Type           : HOURLY
      Target Location            : INTERNAL
      Target Type                : Fiber
      Target Structure           : N.A.
      Number of Targets          : 2
      Target Distance(s)      [m]: 
        Date Measured            : 
        Accuracy             [mm]: 1
        Verification             : 
      Return-Rate Controlled     : YES
      Eye-Safe Method            : Other
        Additional Information   : 
      Mode of Operation          : SINGLE PHOTON
      Calibration performed      : Hour
      Single Shot RMS        [mm]: 
      Edit Criterion 1st Chain   : ITERATIVE 2.2 SIGMA
      Edit Criterion 2nd Chain   : 
      Application of Cal Data    : Average
      Date Installed             : 2023-05-10
      Date Removed               : 
      Additional Information     : 


 9.   Time and Frequency Standards

 9.01.01 Frequency Standard Type : H-Maser
         Model                   : EFOS_C
         Manufacturer            : T4 Science SA
         Short Term Stab.  [e-12]: 
         Long Term Stab.   [e-12]: 
         Time Reference          : 
         Synchronization         : 
         Epoch Accuracy      [ns]: 
         Date Installed          : 
         Date Removed            : 
         Additional Information  : Installed at Yebes Observatory
                                 : 40 m radio telescope area

 9.02.01 GNSS Timing Rcvr Model  : Lantime M3000
         Manufacturer            : Meinberg
         Date Installed          : 2023-05-10
         Date Removed            : 
         Additional Information  : 

 9.03.01 One-way System Calibration
         Date performed          : 
         Direction Calibrated    : 
         Additional Information  : 


10.   Preprocessing Information

10.01 On-site NP Generation      : YES
      Data Screening             : CPF+POLYNOMIAL
      Return-Rate Rejection      : 
      Edit Criterion 1st Chain   : Iterative 2.2 SIGMA
      Edit Criterion 2nd Chain   : 
      Upload interval            : After each shift
      Date First Applicable      : 2023-05-18 01:23 UT
      Date Last Applicable       : 
      Additional Information     : 


11.   Aircraft Detection

11.01 Detection Type             : ADS-B
      Manufacturer/Provider      : Radarcape
      Automatic Laser Shutoff    : Yes
      Alarms Recorded            : Yes
      Hazard Distance        [km]: 30
      Date Installed             : 2023-05-10
      Date Removed               : 
      Additional Information     : 

11.01 Detection Type             : FLARM
      Manufacturer/Provider      : Air Avionics AT-1
      Automatic Laser Shutoff    : Yes
      Alarms Recorded            : Yes
      Hazard Distance        [km]: 
      Date Installed             : 2023-05-10
      Date Removed               : 
      Additional Information     : 
11.01 Detection Type             : All sky camera
      Manufacturer/Provider      : OMEA 8C
      Automatic Laser Shutoff    : No
      Alarms Recorded            : No
      Hazard Distance        [km]: 
      Date Installed             : 2023-05-10
      Date Removed               : 
      Additional Information     : 

12.   Meteorological Instrumentation

12.01.01 Pressure Sensor Model   : BAROCAP + SPH10
         Manufacturer            : Vaisala
         Recording Interval      : 
         Accuracy          [mbar]: +/-0.1
         Height Diff to SRP   [m]: 
         Distance from SRP    [m]: 
         Date Installed          : 2023-05-10 00:00 UT
         Calibration Interval    : 
         Date Removed            : 
         Additional Information  : 

12.02.01 Temp Sensor Model       : HMP3
         Manufacturer            : Vaisala
         Recording Interval      : 
         Accuracy         [deg C]: +/- 0.1
         Date Installed          : 2023-05-10 00:00 UT
         Calibration Interval    : 
         Date Removed            : 
         Additional Information  : 

12.03.01 Humidity Sensor Model   : HMP3
         Manufacturer            : Vaisala
         Recording Interval      : 
         Accuracy       [% rel h]: +/- 0.8
         Date Installed          : 2023-05-10 00:00 UT
         Calibration Interval    : 
         Date Removed            : 
         Additional Information  : 


13.   Local Ties, Eccentricities, and Collocation Information

13.01 Collocated Permanent Geodetic Systems

13.01.01.01 GNSS                 : IGS/EUREF/ERGNSS
            Date Installed       : 1998-03-06
            Date Removed         : 
            Additional Info      : 
13.01.02.01 DORIS                : 
            Date Installed       : 
            Date Removed         : 
            Additional Info      : 
13.01.03.01 PRARE                : 
            Date Installed       : 
            Date Removed         : 
            Additional Info      : 
13.01.04.01 VLBI                 : Yes
            Date Installed       : 2008-MM-DD
            Date Removed         : 
            Additional Info      : Aries XXI, 40 m Radio Telescope, S/X Bands
13.01.04.01 VLBI                 : Yes
            Date Installed       : 2016-MM-DD
            Date Removed         : 
            Additional Info      : VGOS Radio Telescope, Broad Band 2-14 GHz
13.01.05.01 Gravimeter           : Superconducting
            Date Installed       : 2011-MM-DD
            Date Removed         : 
            Additional Info      : 
13.01.05.01 Gravimeter           : Absolute
            Date Installed       : 
            Date Removed         : 
            Additional Info      : FG5 and A10
13.01.06.01 Other SLR            : 
            Date Installed       : 
            Date Removed         : 
            Additional Info      : 

13.02.01.01 Local Ties from the SRP to Other Monuments or Systems on Site

         Monument Name           : 
         Instrumentation Type    : 
         Instrumentation Status  : 
         DOMES Number            : 
         CDP Number              : 
         Differential Components (ITRS)
           dx                 [m]: 
           dy                 [m]: 
           dz                 [m]: 
           Date Measured         : 
           Determined by         : 
         Date Installed          : 
         Date Removed            : 
         Additional Information  : 

13.03.01.01 Eccentricities Between Other Monuments on Site

         From: Monument Name     : 
               DOMES Number      : 
               CDP Number        : 
         To:   Monument Name     : 
               DOMES Number      : 
               CDP Number        : 
         Differential Components (ITRS)
           dx                 [m]: 
           dy                 [m]: 
           dz                 [m]: 
           Date Measured         : 
           Determined by         : 
         Additional Information  : 


14.   Local Events Possibly Affecting Computed Position

14.01 Date                       : 
      Event                      : 
      Additional Information     : 


15.   On-Site, Point of Contact Agency Information

      Agency                     : Yebes Observatory - IGN/CNIG
      Mailing Address            : Cerro de la Palera s/n
                                 : 19141 Yebes (Guadalajara)
      Website                    : astronomia.ign.es/web/guest/icts-yebes
      Primary Contact
        Contact Name             : Bea Vaquero
        Telephone (primary)      : +34 949 290 311
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : b.vaquero@oan.es
      Secondary Contact
        Contact Name             : Jose Antonio Lopez
        Telephone (primary)      : +34 949 290 311
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : a.lopezperez@oan.es
      Tertiary Contact
        Contact Name             : Adolfo Garcia
        Telephone (primary)      : +34 949 290 311
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : a.garcia@oan.es
      Additional Information     : 


16.   Responsible Agency (if different from 15.)

      Agency                     : 
      Mailing Address            : 
      Primary Contact
        Contact Name             : 
        Telephone (primary)      : 
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : 
      Secondary Contact
        Contact Name             : 
        Telephone (primary)      : 
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : 
      Additional Information     : 


17.   More Information

      URL for More Information   : 
      Hardcopy on File
        Site Map                 : 
        Site Diagram             : 
        Horizon Mask             : 
        Monument Description     : 
        Site Pictures            : 
      Additional Information     :