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Yebes
Jump to: Photo, Contact, Coordinates, News, Links
Yebes Contact:
| Agency | Yebes Observatory - IGN/CNIG |
| Mailing Address | Cerro de la Palera s/n 19141 Yebes (Guadalajara) |
| Primary Contact | |
| Contact Name | Beatriz Vaquero Jimenez |
| Telephone (primary) | +34 949 290 311 |
| Telephone (secondary) | |
| Fax | |
| b.vaquero@oan.es | |
| Secondary Contact | |
| Contact Name | Adolfo Garcia Marin |
| Telephone (primary) | +34 949 290 311 |
| Telephone (secondary) | |
| Fax | |
| a.garcia@oan.es | |
Yebes Coordinates:
Approximate Position:
| X coordinate | [m] | 4848747.181 |
| Y coordinate | [m] | -261792.551 |
| Z coordinate | [m] | 4123060.215 |
| Latitude | [deg] | 40.5245 N |
| Longitude | [deg] | 3.0905 W |
| Elevation | [m] | 974.335 |
| Survey Method | ||
| Date Measured | ||
| Additional Information | First coordinates estimation | |
Yebes News:
Local Events:
No local events found.
SLRMail Messages:
No SLRMail mesages found.Yebes Link:
No site link found.Yebes: Site Log
Instructions and Update Site Log
You can use the hyperlinks to quickly get to the section of interest or you can scroll down to read them all.
Section: 0. Form
Section: 1. Identification of the Ranging System Reference Point (SRP)
Section: 2. Site Location Information
Section: 3. General System Information
Section: 4. Telescope Information
Section: 5. Laser System Information
Section: 6. Receiver System
Section: 7. Tracking Capabilities
Section: 8. Calibration
Section: 9. Time and Frequency Standards
Section: 10. Preprocessing Information
Section: 11. Aircraft Detection
Section: 12. Meteorological Instrumentation
Section: 13. Local Ties, Eccentricities, and Collocation Information
Section: 14. Local Events Possibly Affecting Computed Position
Section: 15. On-Site, Point of Contact Agency Information
Section: 16. Responsible Agency (if different from 15.)
Section: 17. More Information
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 : 2025-04-22
Report Type : UPDATE
Site Log Format Version : 2.0
Site Log Revision : 3
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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
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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]: 4848747.181
Y coordinate [m]: -261792.551
Z coordinate [m]: 4123060.215
Latitude [deg]: 40.5245 N
Longitude [deg]: 3.0905 W
Elevation [m]: 974.335
Survey Method : Estimated from SLR observations
Date Measured :
Additional Information : First coordinates estimation
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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 :
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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
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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 :
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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 :
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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 :
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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 :
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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 :
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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 : Iterative 2.2 SIGMA
Upload interval : After each shift
Date First Applicable : 2023-05-18 01:23 UT
Date Last Applicable :
Additional Information : LEHM Clipping Limits
: (upper clipping points from LEHM for
: LEHM clipped targets in [mm, 1-way])
: - 20 mm for Lageos1/2 and Lares 2
: - 300 mm for Ajisai
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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 :
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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 :
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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 :
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14. Local Events Possibly Affecting Computed Position
14.01 Date :
Event :
Additional Information :
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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 : Beatriz Vaquero Jimenez
Telephone (primary) : +34 949 290 311
Telephone (secondary) :
Fax :
E-mail : b.vaquero@oan.es
Secondary Contact
Contact Name : Jose Antonio Lopez Perez
Telephone (primary) : +34 949 290 311
Telephone (secondary) :
Fax :
E-mail : jalopezperez@transportes.gob.es
Tertiary Contact
Contact Name : Adolfo Garcia Marin
Telephone (primary) : +34 949 290 311
Telephone (secondary) :
Fax :
E-mail : a.garcia@oan.es
Additional Information :
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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 :
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17. More Information
URL for More Information :
Hardcopy on File
Site Map :
Site Diagram :
Horizon Mask :
Monument Description :
Site Pictures :
Additional Information :
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Yebes: Meteorological data
[an error occurred while processing this directive]Yebes: LAGEOS performance
Note: For a larger view, please select a thumbnail.
| type | Since 2012 | Monthly average |
|---|---|---|
| RMS |  |
 |
| Cal RMS |  |
|
| Sys Dly |  |
 |
| Obs per NPT |
 |
 |
| FR Obs per Pass |
 |
 |
Yebes: 7-day tracking information
Click on a plot to view a larger image.
| Days ago | |
|---|---|
| 1 |  |
| 2 |  |
| 3 |  |
| 4 |  |
| 5 |  |
| 6 |  |
| 7 |  |
Yebes: Satellite Information (as a function of local time and satellite range)
Click on a plot to view a larger image.
| satellite | local time | range | ||
|---|---|---|---|---|
| npt rms | numFR /npt | npt rms | numFR /npt |
|
| Ajisai 30 sec |
 |
 |
 |
 |
| Cryosat-2 15 sec |
 |
 |
 |
 |
| Etalon-1 300 sec |
 |
 |
 |
 |
| Etalon-2 300 sec |
 |
 |
 |
 |
| Galileo-102 300 sec |
 |
 |
|
 |
| Galileo-202 300 sec |
 |
 |
|
 |
| Galileo-209 300 sec |
 |
 |
|
 |
| Galileo-210 300 sec |
 |
 |
|
 |
| GLONASS-131 300 sec |
 |
 |
 |
 |
| GLONASS-134 300 sec |
 |
 |
 |
 |
| GLONASS-138 300 sec |
 |
 |
 |
 |
| GLONASS-139 300 sec |
 |
 |
 |
 |
| GRACE-FO-1 5 sec |
 |
 |
 |
 |
| GRACE-FO-2 5 sec |
 |
 |
 |
 |
| Jason-3 15 sec |
 |
 |
 |
 |
| LAGEOS-1 120 sec |
 |
 |
 |
 |
| LAGEOS-2 120 sec |
 |
 |
 |
 |
| LARES 30 sec |
 |
 |
 |
 |
| Starlette 30 sec |
 |
 |
 |
 |
| Stella 30 sec |
 |
 |
 |
 |
| Swarm-A 5 sec |
 |
 |
 |
 |
| Swarm-B 5 sec |
 |
 |
 |
 |
| Swarm-C 5 sec |
 |
 |
 |
 |
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