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Hartebeesthoek
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Hartebeesthoek Contact:
Agency | Hartebeesthoek Radio Astronomy Observatory |
Mailing Address | P.O. Box 443 Krugersdorp 1740 South Africa |
Primary Contact | |
Contact Name | Roelf Botha |
Telephone (primary) | +2712 301 3100 |
Telephone (secondary) | +2712 301 3226 |
Fax | +2712 301 3300 |
roelf@hartrao.ac.za | |
Secondary Contact | |
Contact Name | |
Telephone (primary) | |
Telephone (secondary) | |
Fax | |
Hartebeesthoek Coordinates:
Approximate Position:
X coordinate | [m] | 5085401.135 |
Y coordinate | [m] | 2668330.108 |
Z coordinate | [m] | -2768688.865 |
Latitude | [deg] | 25.8897 S |
Longitude | [deg] | 27.6861 E |
Elevation | [m] | 1406.822 |
Survey Method | ||
Date Measured | ||
Additional Information |
Hartebeesthoek News:
Local Events:
No local events found.
SLRMail Messages:
No SLRMail mesages found.Hartebeesthoek Link:
Hartebeesthoek: 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) : Roelf Botha Preparer E-mail : roelf@hartrao.ac.za Date Prepared : 2021-09-27 Report Type : UPDATE Site Log Format Version : 2.0 Site Log Revision : 1 Back to top 1. Identification of the Ranging System Reference Point (SRP) Site Name : Hartebeesthoek Radio Astronomy Observatory IERS DOMES Number : 30302M003 CDP Pad ID : 7501 Subnetwork : NASA Description : MONUMENT Monument Description : PILLAR Monument Inscription : None Mark Description : Bullseye Date Installed : 1993-07-12 Date Removed : Geologic Characteristic : Andesite Additional Information : monument is a brass marker with a stainless : steel plate around the marker Back to top 2. Site Location Information City or Town : Johannesburg State or Province : Gauteng Country : South Africa Tectonic Plate : African Local Time (UTC +/- hours) : Approximate Position X coordinate [m]: 5085401.135 Y coordinate [m]: 2668330.108 Z coordinate [m]: -2768688.865 Latitude [deg]: 25.8897 S Longitude [deg]: 27.6861 E Elevation [m]: 1406.822 Survey Method : Date Measured : Additional Information : Back to top 3. General System Information 3.01 System Name : Moblas-6 4-Character Code : HARL CDP System Number : 06 CDP Occupation Number : 02 Eccentricity to SRP (if Not Identical With SRP) North [m]: -0.004 +- 0.001 East [m]: -0.007 +- 0.001 Up [m]: 3.227 +- 0.001 Date Measured : 2014-03-01 Date Installed : 2000-06-09 Date Removed : Additional Information : Previously occupied by MTLRS : : The eccentricities in this section may not : be current and may not contain the entire : history. The official set of site : eccentricities are maintained in the : following two SINEX data bases at: : : https://cddis.nasa.gov/archive/ : slr/slrocc/ecc_xyz.snx : : and : : https://cddis.nasa.gov/archive/ : slr/slrocc/ecc_une.snx Back to top 4. Telescope Information 4.01 Receiving Telescope Type : Cassegrain Aperture [m]: 0.762 Mount : AZ-EL Date Installed : Date Removed : Xmitting Telescope Type : Refractor Aperture [m]: 0.163 Date Installed : Date Removed : Tracking Camera Type : NONE Model : Manufacturer : Field of View [deg]: Minimum Magnitude [mag]: Date Installed : Date Removed : Transmit/Receive Path : SEPARATE Transmit/Receive Switch : NONE Max Slew Rate Az [deg/s]: 20 Max Slew Rate El [deg/s]: 5 Max Used Tracking Rate Az : 5 Max Used Tracking Rate El : 3 Telescope Shelter : ROLL-BACK ROOF Daylight Filter Type : Omega optical 532NB1 9114 Dayl. Filt. Bandwidth [nm]: 100 Adjustable Attenuation : RECEIVE Adjustable Field of View : Transmit Efficiency : 0.94 Receive Efficiency : 0.76 Date Installed : 2000-06-09 Date Removed : Additional Information : Back to top 5. Laser System Information 5.01 Laser Type : ND:YAG Model : Manufacturer : Number of Amplifiers : 1 Primary Wavelength [nm]: 1064nm Primary Maximum Energy [mJ]: 200 Secondary Wavelength [nm]: 532.1 Secondary Max. Energy [mJ]: 100 Xmit Energy Adjustable : YES Additional Information : Pulse Width (FWHM) [ps]: 200 Max. Repetition Rate [Hz]: 10 Fullw. Beam Divergence ["]: 30 Theoretical Beam Div : Measured Beam Div : Method Used : Additional Information : Final Beam Diameter [m]: 0.093 Eyesafe : NO Eyesafe Standard : ANSI 136.1 Polarization on Exit : Laser Fire Control : Laser Energy Monitor : Start Diode Type : Manufactorer : Model : Quantum Efficiency [%]: Rise/Fall Time [ps]: Date Installed : Date Removed : Signal Processing : Manufacturer : Model : Date Installed : Date Removed : Additional Information : Date Installed : 2000-06-09 Date Removed : Additional Information : 1) Receive equipment upgraded to 10Hz for LRO : support : 2) Saturable laser upgrade 2008-10-07 : 3) Laser table replaced 2011-03-23 : 4) SHG stability 2018-05-04 Back to top 6. Receiver System 6.01.01 Primary Chain Wavelength [nm]: 532 Detector Type : MCP Manufacturer : ITT Model : F4129F Quantum Efficiency [%]: 17.7 Nominal Gain : 1e06 Rise Time [ps]: 350 Jitter (Single PE)[ps]: 100 Field of View Diam ["]: 360 Date Installed : 2000-06-09 Date Removed : 2007-09-DD Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : Tennelec Model : TC454 Date Installed : 2000-06-09 Date Removed : Amplitude Measurement : YES Return-Rate Controlled: YES Mode of Operation : Few to Multi Photons Additional Information: Time of Flight Observ. : INTERVAL Manufacturer : Hewlett-Packard Model : 5370B Resolution [ps]: 20 Precision [ps]: 35 Date Installed : 2000-06-09 Date Removed : Additional Information : 6.01.02 Primary Chain Wavelength [nm]: 532 Detector Type : PMT Manufacturer : Photek Model : PMT-318 Quantum Efficiency [%]: 13 Nominal Gain : 1e07 Rise Time [ps]: 350 Jitter (Single PE)[ps]: 100 Field of View Diam ["]: 360 Date Installed : 2007-09-24 Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : Tennelec Model : TC454 Date Installed : 2000-06-09 Date Removed : Amplitude Measurement : YES Return-Rate Controlled: YES Mode of Operation : Few to Multi Photons Additional Information: Time of Flight Observ. : INTERNAL Manufacturer : Hewlett-Packard Model : 5370B Resolution [ps]: 20 Precision [ps]: 35 Date Installed : 2000-06-09 Date Removed : 2017-11-29 Additional Information : 6.01.03 Primary Chain Wavelength [nm]: 532 Detector Type : PMT Manufacturer : Photek Model : PMT-318 Quantum Efficiency [%]: 13.3 Nominal Gain : 1e6 Rise Time [ps]: 250 Jitter (Single PE)[ps]: 100 Field of View Diam ["]: 6 - 360 Date Installed : 2007-09-24 Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : Tennelec Model : TC454 Date Installed : 2000-06-09 Date Removed : Amplitude Measurement : YES Return-Rate Controlled: YES Mode of Operation : Single to Multiple Photoelectrons Additional Information: Time of Flight Observ. : Epoch Manufacturer : Cybioms Model : cybi_ETM-02 Resolution [ps]: 1 Precision [ps]: 3 Date Installed : 2017-11-29 Date Removed : Additional Information : The HP5370B is no longer primary as of : 2017-11-29, its data is not sent to the : SLR data centers. : Replaced PMT power and receive cables : 2018-04-08 6.02.01 Secondary Chain Wavelength [nm]: 532 Detector Type : MCP Manufacturer : ITT Model : F4129F Quantum Efficiency [%]: 17.7 Nominal Gain : 1e6 Rise Time [ps]: 350 Jitter (Single PE)[ps]: 100 Field of View Diam ["]: 360 Date Installed : 1986-03-31 Date Removed : 2007-09-DD Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : Tennelec Model : TC454 Date Installed : 2000-06-09 Date Removed : Amplitude Measurement : YES Return-Rate Controlled: YES Mode of Operation : Single to Multi Photons Additional Information: Time of Flight Observ. : INTERVAL Manufacturer : Hewlett-Packard Model : 5370B Resolution [ps]: 20 Precision [ps]: 35 Date Installed : 2000-06-09 Date Removed : Additional Information : High sensitivity laser receiver conf. : Everything is the same as the primary : chain except the discriminator : threshold has been lowered to accept : single photons and the signal is : amplified with 24 dB of gain 6.02.02 Secondary Chain Wavelength [nm]: 532 Detector Type : PMT Manufacturer : Photek Model : PMT-318 Quantum Efficiency [%]: 13 Nominal Gain : 17 Rise Time [ps]: 350 Jitter (Single PE)[ps]: 100 Field of View Diam ["]: 360 Date Installed : 2007-09-24 Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : Tennelec Model : TC454 Date Installed : 2000-06-09 Date Removed : Amplitude Measurement : YES Return-Rate Controlled: YES Mode of Operation : Few to Multi Photons Additional Information: Time of Flight Observ. : INTERNAL Manufacturer : Hewlett-Packard Model : 5370B Resolution [ps]: 20 Precision [ps]: 35 Date Installed : 2000-06-09 Date Removed : Additional Information : High sensitivity laser receiver : configuration. : Everything is the same as the primary chain : except the discriminator threshold has been : lowered to accept single photons and the : signal is amplified with 24 dB of gain 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 : Back to top 7. Tracking Capabilities 7.01 Satellites Very Low Alt (<400 km) : YES Low Altitude (400-2000) : YES LAGEOS/LARES : YES GLONASS : YES Etalon : NIGHT GNSS : NIGHT Geosynchronous : Moon : NO Ave. Pass Switch Time [s]: 60 Average values for LAGEOS Single Shot RMS [mm]: 10 # of Obs per NP : 200 Use of Semi-trains : NO # of Semi-train Tracks : N.A. Range Gate Width [ns]: 2000 Beam Pointing Accuracy ["]: 0.6 Angle Encoder Resolution["]: 0.6 Min. Tracking Elev. [deg]: 20 Laser Polarization @emitter: Operation Months per Year : 12 Days per Week : 7 Hours per Day : 24 Staff per Shift : 1 System Shared With : none Time Allocated to SLR [%]: 100 Remotely Controllable : NO Tracking Restrictions Go/No-go flag : Satellite Verification : Date Verified : Maximum elevation : Satellite Verification : Date Verified : Pass segments : Satellite Verification : Date Verified : Schedule segments : Satellite Verification : Date Verified : Maximum laser power limit: Satellite Verification : Date Verified : Date First Applicable : 2000-06-09 00:00 UT Date Last Applicable : Additional Information : On 2002-06-09 went from : 5 days a week to 7 days : a week operation. Staff : per shift was reduced from 2 : to 1 at this time. Saturdays and : Sundays 16 hours operation. Back to top 8. Calibration 8.01 Calibration Type : PRE+POST Target Location : EXTERNAL Target Type : CORNER CUBE Target Structure : CONCRETE PIER Number of Targets : Target Distance(s) [m]: 198 Date Measured : 2000-08-07 Accuracy [mm]: 2 Verification : multi-target ranging Return-Rate Controlled : NO Eye-Safe Method : Additional Information : Mode of Operation : MULTI PHOTON Calibration performed : 5 Single Shot RMS [mm]: 5 Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA Edit Criterion 2nd Chain : N.A. Application of Cal Data : AVERAGE Date Installed : Date Removed : Additional Information : Back to top 9. Time and Frequency Standards 9.01.01 Frequency Standard Type : Rubidium disciplined by GPS Model : XL-DC 151-358-108-2 Manufacturer : Symmetricom (TrueTime) Short Term Stab. [e-12]: 10 Long Term Stab. [e-12]: 3 Time Reference : GPS Synchronization : GPS Epoch Accuracy [ns]: 100 Date Installed : 2000-06-09 Date Removed : Additional Information : This Truetime model contains the : Stanford PRS10 Rubidium Frequency : Standard 9.01.02 Frequency Standard Type : Rubidium disciplined by GPS Model : XL-DC 151-358-108-2 Manufacturer : Symmetricom (TrueTime) Short Term Stab. [e-12]: 10 Long Term Stab. [e-12]: 3 Time Reference : GPS Synchronization : GPS Epoch Accuracy [ns]: 100 Date Installed : 2000-06-09 Date Removed : 2017-11-03 Additional Information : This Truetime model contains the : Stanford PRS10 Rubidium Frequency : Standard 9.01.03 Frequency Standard Type : Rubidium disciplined by GPS Model : XL-DC Model 151-358-108-2 S/N: 00214843 Manufacturer : Symmetricom (TrueTime) Short Term Stab. [e-12]: 10 Long Term Stab. [e-12]: 3 Time Reference : GPS Synchronization : GPS Epoch Accuracy [ns]: 100 Date Installed : 2017-11-03 Date Removed : Additional Information : This Truetime model contains the : Stanford PRS10 Rubidium Frequency : Standard 9.02.01 GNSS Timing Rcvr Model : XL-DC 151-358-108-2 Manufacturer : Symmetricom (TrueTime) Date Installed : 2000-06-09 Date Removed : Additional Information : CNS clock used for comparisons 9.03.01 One-way System Calibration Date performed : Direction Calibrated : Additional Information : Back to top 10. Preprocessing Information 10.01 On-site NP Generation : NO Data Screening : IRV+POLYNOMIAL Return-Rate Rejection : Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA Edit Criterion 2nd Chain : N.A. Upload interval : HOURLY Date First Applicable : 2000-06-09 HH:MM UT Date Last Applicable : 2002-06-19 HH:MM UT Additional Information : 10.02 On-site NP Generation : YES Data Screening : IRV+POLYNOMIAL Return-Rate Rejection : Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA Edit Criterion 2nd Chain : N.A. Upload interval : HOURLY Date First Applicable : 2002-06-19 HH:MM UT Date Last Applicable : Additional Information : Generic Normal Point Processing : System 2.7.4 installed 2002-06-19 : at 06:30 UT Back to top 11. Aircraft Detection 11.01 Detection Type : RADAR Manufacturer/Provider : Automatic Laser Shutoff : Alarms Recorded : Hazard Distance [km]: Date Installed : 2000-06-09 Date Removed : Additional Information : Back to top 12. Meteorological Instrumentation 12.01.01 Pressure Sensor Model : MET3 Manufacturer : Paroscientific Recording Interval : PER PULSE Accuracy [mbar]: 0.1 Height Diff to SRP [m]: 4 Distance from SRP [m]: Date Installed : 2000-06-09 HH:MM UT Calibration Interval : YEARLY Date Removed : 2011-07-28 HH:MM UT Additional Information : MET3 package replaced on : 2002-06-13. Barometric data : taken between 2002-05-13 and : 2002-06-12 is suspect. 12.01.02 Pressure Sensor Model : MET4 Manufacturer : Paroscientific Recording Interval : PER PULSE Accuracy [mbar]: 0.08 Height Diff to SRP [m]: -0.15 Distance from SRP [m]: Date Installed : 2011-07-28 HH:MM UT Calibration Interval : biyearly Date Removed : Additional Information : 12.02.01 Temp Sensor Model : MET3 Manufacturer : Paroscientific Recording Interval : PER PULSE Accuracy [deg C]: 0.5 Date Installed : 2000-06-09 HH:MM UT Calibration Interval : YEARLY Date Removed : 2011-07-28 HH:MM UT Additional Information : 12.02.02 Temp Sensor Model : MET4 Manufacturer : Paroscientific Recording Interval : EVERY PULSE Accuracy [deg C]: 0.2 Date Installed : 2011-07-28 HH:MM UT Calibration Interval : BIYEARLY Date Removed : Additional Information : 12.03.01 Humidity Sensor Model : MET3 Manufacturer : Paroscientific Recording Interval : PER PASS Accuracy [% rel h]: 2 Date Installed : 2000-06-09 HH:MM UT Calibration Interval : YEARLY Date Removed : 2011-07-28 HH:MM UT Additional Information : (multiple lines) 12.03.02 Humidity Sensor Model : MET4 Manufacturer : Paroscientific Recording Interval : PER PASS Accuracy [% rel h]: 2 Date Installed : 2011-07-28 HH:MM UT Calibration Interval : BIYEARLY Date Removed : Additional Information : (multiple lines) 12.03.03 Humidity Sensor Model : MET4 Manufacturer : Paroscientific Recording Interval : PER PASS Accuracy [% rel h]: 2 Date Installed : 2011-07-28 HH:MM UT Calibration Interval : BIYEARLY Date Removed : 2015-09-08 HH:MM UT Additional Information : 12.03.04 Humidity Sensor Model : MET4 S/N:115135 Manufacturer : Paroscientific Recording Interval : PER PASS Accuracy [% rel h]: 2 Date Installed : 2015-09-08 HH:MM UT Calibration Interval : BIYEARLY Date Removed : Additional Information : (multiple lines) : Barometer reference level : aligned to the level : of telescope elevation axis Back to top 13. Local Ties, Eccentricities, and Collocation Information 13.01 Collocated Permanent Geodetic Systems 13.01.01.01 GNSS : IGS Date Installed : 1996-09-05 Date Removed : Additional Info : (multiple lines) 13.01.01.02 GNSS : NO Date Installed : Date Removed : Additional Info : 13.01.02.01 DORIS : IDS Date Installed : 1988-03-10 Date Removed : 1997-05-23 Additional Info : HBKA 13.01.02.02 DORIS : IDS Date Installed : 1997-05-30 Date Removed : 2000-08-08 Additional Info : HBLA 13.01.02.03 DORIS : IDS Date Installed : 2000-08-09 Date Removed : Additional Info : HBKB 13.01.03.01 PRARE : NO Date Installed : Date Removed : Additional Info : 13.01.04.01 VLBI : YES Date Installed : 1961-01-01 Date Removed : Additional Info : 13.01.05.01 Gravimeter : NO Date Installed : Date Removed : Additional Info : 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 : HRAO Instrumentation Type : GPS Instrumentation Status : PERMANENT DOMES Number : 30302M004 CDP Number : Differential Components (ITRS) dx [m]: 48.6258 +- 0.0030 dy [m]: -65.5916 +- 0.0014 dz [m]: 42.7988 +- 0.0024 Date Measured : 2003-08-01 Determined by : IGN Date Installed : 1996-09-05 Date Removed : Additional Information : 13.03.01.01 Eccentricities Between Other Monuments on Site From: Monument Name : HRAO DOMES Number : 30302M004 CDP Number : To: Monument Name : 7232 DOMES Number : 30302S001 CDP Number : 7232 Differential Components (ITRS) dx [m]: 90.3001 +- 0.0039 dy [m]: -132.1879 +- 0.0023 dz [m]: 34.6539 +- 0.0044 Date Measured : 2003-08-01 Determined by : IGN Additional Information : 13.03.02.01 Eccentricities Between Other Monuments on Site From: Monument Name : HARL DOMES Number : 30302M003 CDP Number : 7501 To: Monument Name : VLBI DOMES Number : 30302S001 CDP Number : 7232 Differential Components (ITRS) dx [m]: 41.680 +- 0.0158 dy [m]: -66.564 +- 0.075 dz [m]: 8.131 +- 0.039 Date Measured : 1996-06-01 Determined by : Ludwig Combrinck Additional Information : Back to top 14. Local Events Possibly Affecting Computed Position 14.01 Date : Event : Additional Information : Back to top 15. On-Site, Point of Contact Agency Information Agency : Hartebeesthoek Radio Astronomy Observatory Mailing Address : P.O. Box 443 : Krugersdorp 1740 : South Africa Website : Primary Contact Contact Name : Roelf Botha Telephone (primary) : +2712 301 3100 Telephone (secondary) : +2712 301 3226 Fax : +2712 301 3300 E-mail : roelf@hartrao.ac.za Secondary Contact Contact Name : Willy Moralo Telephone (primary) : +2712 301 3100 Telephone (secondary) : +2712 301 3215 Fax : +2712 301 3300 E-mail : willy@hartrao.ac.za Tertiary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : Back to top 16. Responsible Agency (if different from 15.) Agency : NASA Mailing Address : NASA Goddard, Code 61A : 8800 Greenbelt Road : Greenbelt, MD 20771 USA Primary Contact Contact Name : Jeffrey Dorman Telephone (primary) : Telephone (secondary) : Fax : E-mail : jeffrey.l.dorman@nasa.gov Secondary Contact Contact Name : Stephen Merkowitz Telephone (primary) : 301-286-9412 Telephone (secondary) : Fax : E-mail : stephen.m.merkowitz@nasa.gov Additional Information : Back to top 17. More Information URL for More Information : www.hartrao.ac.za Hardcopy on File Site Map : NO Site Diagram : NO Horizon Mask : NO Monument Description : NO Site Pictures : YES Additional Information : Back to top
Hartebeesthoek: Meteorological data
Note: For a larger view, please select a thumbnail.
Type | Since 2012 | Monthly Average Offset |
---|---|---|
Temperature | Humidity | |
Pressure |
Hartebeesthoek: LAGEOS performance
Note: For a larger view, please select a thumbnail.
type | Since 2012 | Monthly average |
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RMS | ||
Cal RMS | ||
Sys Dly | ||
Obs per NPT |
||
FR Obs per Pass |
Hartebeesthoek: 7-day tracking information
Click on a plot to view a larger image.
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Hartebeesthoek: 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) : Roelf Botha Preparer E-mail : roelf@hartrao.ac.za Date Prepared : 2021-09-27 Report Type : UPDATE Site Log Format Version : 2.0 Site Log Revision : 1 Back to top 1. Identification of the Ranging System Reference Point (SRP) Site Name : Hartebeesthoek Radio Astronomy Observatory IERS DOMES Number : 30302M003 CDP Pad ID : 7501 Subnetwork : NASA Description : MONUMENT Monument Description : PILLAR Monument Inscription : None Mark Description : Bullseye Date Installed : 1993-07-12 Date Removed : Geologic Characteristic : Andesite Additional Information : monument is a brass marker with a stainless : steel plate around the marker Back to top 2. Site Location Information City or Town : Johannesburg State or Province : Gauteng Country : South Africa Tectonic Plate : African Local Time (UTC +/- hours) : Approximate Position X coordinate [m]: 5085401.135 Y coordinate [m]: 2668330.108 Z coordinate [m]: -2768688.865 Latitude [deg]: 25.8897 S Longitude [deg]: 27.6861 E Elevation [m]: 1406.822 Survey Method : Date Measured : Additional Information : Back to top 3. General System Information 3.01 System Name : Moblas-6 4-Character Code : HARL CDP System Number : 06 CDP Occupation Number : 02 Eccentricity to SRP (if Not Identical With SRP) North [m]: -0.004 +- 0.001 East [m]: -0.007 +- 0.001 Up [m]: 3.227 +- 0.001 Date Measured : 2014-03-01 Date Installed : 2000-06-09 Date Removed : Additional Information : Previously occupied by MTLRS : : The eccentricities in this section may not : be current and may not contain the entire : history. The official set of site : eccentricities are maintained in the : following two SINEX data bases at: : : https://cddis.nasa.gov/archive/ : slr/slrocc/ecc_xyz.snx : : and : : https://cddis.nasa.gov/archive/ : slr/slrocc/ecc_une.snx Back to top 4. Telescope Information 4.01 Receiving Telescope Type : Cassegrain Aperture [m]: 0.762 Mount : AZ-EL Date Installed : Date Removed : Xmitting Telescope Type : Refractor Aperture [m]: 0.163 Date Installed : Date Removed : Tracking Camera Type : NONE Model : Manufacturer : Field of View [deg]: Minimum Magnitude [mag]: Date Installed : Date Removed : Transmit/Receive Path : SEPARATE Transmit/Receive Switch : NONE Max Slew Rate Az [deg/s]: 20 Max Slew Rate El [deg/s]: 5 Max Used Tracking Rate Az : 5 Max Used Tracking Rate El : 3 Telescope Shelter : ROLL-BACK ROOF Daylight Filter Type : Omega optical 532NB1 9114 Dayl. Filt. Bandwidth [nm]: 100 Adjustable Attenuation : RECEIVE Adjustable Field of View : Transmit Efficiency : 0.94 Receive Efficiency : 0.76 Date Installed : 2000-06-09 Date Removed : Additional Information : Back to top 5. Laser System Information 5.01 Laser Type : ND:YAG Model : Manufacturer : Number of Amplifiers : 1 Primary Wavelength [nm]: 1064nm Primary Maximum Energy [mJ]: 200 Secondary Wavelength [nm]: 532.1 Secondary Max. Energy [mJ]: 100 Xmit Energy Adjustable : YES Additional Information : Pulse Width (FWHM) [ps]: 200 Max. Repetition Rate [Hz]: 10 Fullw. Beam Divergence ["]: 30 Theoretical Beam Div : Measured Beam Div : Method Used : Additional Information : Final Beam Diameter [m]: 0.093 Eyesafe : NO Eyesafe Standard : ANSI 136.1 Polarization on Exit : Laser Fire Control : Laser Energy Monitor : Start Diode Type : Manufactorer : Model : Quantum Efficiency [%]: Rise/Fall Time [ps]: Date Installed : Date Removed : Signal Processing : Manufacturer : Model : Date Installed : Date Removed : Additional Information : Date Installed : 2000-06-09 Date Removed : Additional Information : 1) Receive equipment upgraded to 10Hz for LRO : support : 2) Saturable laser upgrade 2008-10-07 : 3) Laser table replaced 2011-03-23 : 4) SHG stability 2018-05-04 Back to top 6. Receiver System 6.01.01 Primary Chain Wavelength [nm]: 532 Detector Type : MCP Manufacturer : ITT Model : F4129F Quantum Efficiency [%]: 17.7 Nominal Gain : 1e06 Rise Time [ps]: 350 Jitter (Single PE)[ps]: 100 Field of View Diam ["]: 360 Date Installed : 2000-06-09 Date Removed : 2007-09-DD Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : Tennelec Model : TC454 Date Installed : 2000-06-09 Date Removed : Amplitude Measurement : YES Return-Rate Controlled: YES Mode of Operation : Few to Multi Photons Additional Information: Time of Flight Observ. : INTERVAL Manufacturer : Hewlett-Packard Model : 5370B Resolution [ps]: 20 Precision [ps]: 35 Date Installed : 2000-06-09 Date Removed : Additional Information : 6.01.02 Primary Chain Wavelength [nm]: 532 Detector Type : PMT Manufacturer : Photek Model : PMT-318 Quantum Efficiency [%]: 13 Nominal Gain : 1e07 Rise Time [ps]: 350 Jitter (Single PE)[ps]: 100 Field of View Diam ["]: 360 Date Installed : 2007-09-24 Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : Tennelec Model : TC454 Date Installed : 2000-06-09 Date Removed : Amplitude Measurement : YES Return-Rate Controlled: YES Mode of Operation : Few to Multi Photons Additional Information: Time of Flight Observ. : INTERNAL Manufacturer : Hewlett-Packard Model : 5370B Resolution [ps]: 20 Precision [ps]: 35 Date Installed : 2000-06-09 Date Removed : 2017-11-29 Additional Information : 6.01.03 Primary Chain Wavelength [nm]: 532 Detector Type : PMT Manufacturer : Photek Model : PMT-318 Quantum Efficiency [%]: 13.3 Nominal Gain : 1e6 Rise Time [ps]: 250 Jitter (Single PE)[ps]: 100 Field of View Diam ["]: 6 - 360 Date Installed : 2007-09-24 Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : Tennelec Model : TC454 Date Installed : 2000-06-09 Date Removed : Amplitude Measurement : YES Return-Rate Controlled: YES Mode of Operation : Single to Multiple Photoelectrons Additional Information: Time of Flight Observ. : Epoch Manufacturer : Cybioms Model : cybi_ETM-02 Resolution [ps]: 1 Precision [ps]: 3 Date Installed : 2017-11-29 Date Removed : Additional Information : The HP5370B is no longer primary as of : 2017-11-29, its data is not sent to the : SLR data centers. : Replaced PMT power and receive cables : 2018-04-08 6.02.01 Secondary Chain Wavelength [nm]: 532 Detector Type : MCP Manufacturer : ITT Model : F4129F Quantum Efficiency [%]: 17.7 Nominal Gain : 1e6 Rise Time [ps]: 350 Jitter (Single PE)[ps]: 100 Field of View Diam ["]: 360 Date Installed : 1986-03-31 Date Removed : 2007-09-DD Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : Tennelec Model : TC454 Date Installed : 2000-06-09 Date Removed : Amplitude Measurement : YES Return-Rate Controlled: YES Mode of Operation : Single to Multi Photons Additional Information: Time of Flight Observ. : INTERVAL Manufacturer : Hewlett-Packard Model : 5370B Resolution [ps]: 20 Precision [ps]: 35 Date Installed : 2000-06-09 Date Removed : Additional Information : High sensitivity laser receiver conf. : Everything is the same as the primary : chain except the discriminator : threshold has been lowered to accept : single photons and the signal is : amplified with 24 dB of gain 6.02.02 Secondary Chain Wavelength [nm]: 532 Detector Type : PMT Manufacturer : Photek Model : PMT-318 Quantum Efficiency [%]: 13 Nominal Gain : 17 Rise Time [ps]: 350 Jitter (Single PE)[ps]: 100 Field of View Diam ["]: 360 Date Installed : 2007-09-24 Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : Tennelec Model : TC454 Date Installed : 2000-06-09 Date Removed : Amplitude Measurement : YES Return-Rate Controlled: YES Mode of Operation : Few to Multi Photons Additional Information: Time of Flight Observ. : INTERNAL Manufacturer : Hewlett-Packard Model : 5370B Resolution [ps]: 20 Precision [ps]: 35 Date Installed : 2000-06-09 Date Removed : Additional Information : High sensitivity laser receiver : configuration. : Everything is the same as the primary chain : except the discriminator threshold has been : lowered to accept single photons and the : signal is amplified with 24 dB of gain 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 : Back to top 7. Tracking Capabilities 7.01 Satellites Very Low Alt (<400 km) : YES Low Altitude (400-2000) : YES LAGEOS/LARES : YES GLONASS : YES Etalon : NIGHT GNSS : NIGHT Geosynchronous : Moon : NO Ave. Pass Switch Time [s]: 60 Average values for LAGEOS Single Shot RMS [mm]: 10 # of Obs per NP : 200 Use of Semi-trains : NO # of Semi-train Tracks : N.A. Range Gate Width [ns]: 2000 Beam Pointing Accuracy ["]: 0.6 Angle Encoder Resolution["]: 0.6 Min. Tracking Elev. [deg]: 20 Laser Polarization @emitter: Operation Months per Year : 12 Days per Week : 7 Hours per Day : 24 Staff per Shift : 1 System Shared With : none Time Allocated to SLR [%]: 100 Remotely Controllable : NO Tracking Restrictions Go/No-go flag : Satellite Verification : Date Verified : Maximum elevation : Satellite Verification : Date Verified : Pass segments : Satellite Verification : Date Verified : Schedule segments : Satellite Verification : Date Verified : Maximum laser power limit: Satellite Verification : Date Verified : Date First Applicable : 2000-06-09 00:00 UT Date Last Applicable : Additional Information : On 2002-06-09 went from : 5 days a week to 7 days : a week operation. Staff : per shift was reduced from 2 : to 1 at this time. Saturdays and : Sundays 16 hours operation. Back to top 8. Calibration 8.01 Calibration Type : PRE+POST Target Location : EXTERNAL Target Type : CORNER CUBE Target Structure : CONCRETE PIER Number of Targets : Target Distance(s) [m]: 198 Date Measured : 2000-08-07 Accuracy [mm]: 2 Verification : multi-target ranging Return-Rate Controlled : NO Eye-Safe Method : Additional Information : Mode of Operation : MULTI PHOTON Calibration performed : 5 Single Shot RMS [mm]: 5 Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA Edit Criterion 2nd Chain : N.A. Application of Cal Data : AVERAGE Date Installed : Date Removed : Additional Information : Back to top 9. Time and Frequency Standards 9.01.01 Frequency Standard Type : Rubidium disciplined by GPS Model : XL-DC 151-358-108-2 Manufacturer : Symmetricom (TrueTime) Short Term Stab. [e-12]: 10 Long Term Stab. [e-12]: 3 Time Reference : GPS Synchronization : GPS Epoch Accuracy [ns]: 100 Date Installed : 2000-06-09 Date Removed : Additional Information : This Truetime model contains the : Stanford PRS10 Rubidium Frequency : Standard 9.01.02 Frequency Standard Type : Rubidium disciplined by GPS Model : XL-DC 151-358-108-2 Manufacturer : Symmetricom (TrueTime) Short Term Stab. [e-12]: 10 Long Term Stab. [e-12]: 3 Time Reference : GPS Synchronization : GPS Epoch Accuracy [ns]: 100 Date Installed : 2000-06-09 Date Removed : 2017-11-03 Additional Information : This Truetime model contains the : Stanford PRS10 Rubidium Frequency : Standard 9.01.03 Frequency Standard Type : Rubidium disciplined by GPS Model : XL-DC Model 151-358-108-2 S/N: 00214843 Manufacturer : Symmetricom (TrueTime) Short Term Stab. [e-12]: 10 Long Term Stab. [e-12]: 3 Time Reference : GPS Synchronization : GPS Epoch Accuracy [ns]: 100 Date Installed : 2017-11-03 Date Removed : Additional Information : This Truetime model contains the : Stanford PRS10 Rubidium Frequency : Standard 9.02.01 GNSS Timing Rcvr Model : XL-DC 151-358-108-2 Manufacturer : Symmetricom (TrueTime) Date Installed : 2000-06-09 Date Removed : Additional Information : CNS clock used for comparisons 9.03.01 One-way System Calibration Date performed : Direction Calibrated : Additional Information : Back to top 10. Preprocessing Information 10.01 On-site NP Generation : NO Data Screening : IRV+POLYNOMIAL Return-Rate Rejection : Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA Edit Criterion 2nd Chain : N.A. Upload interval : HOURLY Date First Applicable : 2000-06-09 HH:MM UT Date Last Applicable : 2002-06-19 HH:MM UT Additional Information : 10.02 On-site NP Generation : YES Data Screening : IRV+POLYNOMIAL Return-Rate Rejection : Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA Edit Criterion 2nd Chain : N.A. Upload interval : HOURLY Date First Applicable : 2002-06-19 HH:MM UT Date Last Applicable : Additional Information : Generic Normal Point Processing : System 2.7.4 installed 2002-06-19 : at 06:30 UT Back to top 11. Aircraft Detection 11.01 Detection Type : RADAR Manufacturer/Provider : Automatic Laser Shutoff : Alarms Recorded : Hazard Distance [km]: Date Installed : 2000-06-09 Date Removed : Additional Information : Back to top 12. Meteorological Instrumentation 12.01.01 Pressure Sensor Model : MET3 Manufacturer : Paroscientific Recording Interval : PER PULSE Accuracy [mbar]: 0.1 Height Diff to SRP [m]: 4 Distance from SRP [m]: Date Installed : 2000-06-09 HH:MM UT Calibration Interval : YEARLY Date Removed : 2011-07-28 HH:MM UT Additional Information : MET3 package replaced on : 2002-06-13. Barometric data : taken between 2002-05-13 and : 2002-06-12 is suspect. 12.01.02 Pressure Sensor Model : MET4 Manufacturer : Paroscientific Recording Interval : PER PULSE Accuracy [mbar]: 0.08 Height Diff to SRP [m]: -0.15 Distance from SRP [m]: Date Installed : 2011-07-28 HH:MM UT Calibration Interval : biyearly Date Removed : Additional Information : 12.02.01 Temp Sensor Model : MET3 Manufacturer : Paroscientific Recording Interval : PER PULSE Accuracy [deg C]: 0.5 Date Installed : 2000-06-09 HH:MM UT Calibration Interval : YEARLY Date Removed : 2011-07-28 HH:MM UT Additional Information : 12.02.02 Temp Sensor Model : MET4 Manufacturer : Paroscientific Recording Interval : EVERY PULSE Accuracy [deg C]: 0.2 Date Installed : 2011-07-28 HH:MM UT Calibration Interval : BIYEARLY Date Removed : Additional Information : 12.03.01 Humidity Sensor Model : MET3 Manufacturer : Paroscientific Recording Interval : PER PASS Accuracy [% rel h]: 2 Date Installed : 2000-06-09 HH:MM UT Calibration Interval : YEARLY Date Removed : 2011-07-28 HH:MM UT Additional Information : (multiple lines) 12.03.02 Humidity Sensor Model : MET4 Manufacturer : Paroscientific Recording Interval : PER PASS Accuracy [% rel h]: 2 Date Installed : 2011-07-28 HH:MM UT Calibration Interval : BIYEARLY Date Removed : Additional Information : (multiple lines) 12.03.03 Humidity Sensor Model : MET4 Manufacturer : Paroscientific Recording Interval : PER PASS Accuracy [% rel h]: 2 Date Installed : 2011-07-28 HH:MM UT Calibration Interval : BIYEARLY Date Removed : 2015-09-08 HH:MM UT Additional Information : 12.03.04 Humidity Sensor Model : MET4 S/N:115135 Manufacturer : Paroscientific Recording Interval : PER PASS Accuracy [% rel h]: 2 Date Installed : 2015-09-08 HH:MM UT Calibration Interval : BIYEARLY Date Removed : Additional Information : (multiple lines) : Barometer reference level : aligned to the level : of telescope elevation axis Back to top 13. Local Ties, Eccentricities, and Collocation Information 13.01 Collocated Permanent Geodetic Systems 13.01.01.01 GNSS : IGS Date Installed : 1996-09-05 Date Removed : Additional Info : (multiple lines) 13.01.01.02 GNSS : NO Date Installed : Date Removed : Additional Info : 13.01.02.01 DORIS : IDS Date Installed : 1988-03-10 Date Removed : 1997-05-23 Additional Info : HBKA 13.01.02.02 DORIS : IDS Date Installed : 1997-05-30 Date Removed : 2000-08-08 Additional Info : HBLA 13.01.02.03 DORIS : IDS Date Installed : 2000-08-09 Date Removed : Additional Info : HBKB 13.01.03.01 PRARE : NO Date Installed : Date Removed : Additional Info : 13.01.04.01 VLBI : YES Date Installed : 1961-01-01 Date Removed : Additional Info : 13.01.05.01 Gravimeter : NO Date Installed : Date Removed : Additional Info : 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 : HRAO Instrumentation Type : GPS Instrumentation Status : PERMANENT DOMES Number : 30302M004 CDP Number : Differential Components (ITRS) dx [m]: 48.6258 +- 0.0030 dy [m]: -65.5916 +- 0.0014 dz [m]: 42.7988 +- 0.0024 Date Measured : 2003-08-01 Determined by : IGN Date Installed : 1996-09-05 Date Removed : Additional Information : 13.03.01.01 Eccentricities Between Other Monuments on Site From: Monument Name : HRAO DOMES Number : 30302M004 CDP Number : To: Monument Name : 7232 DOMES Number : 30302S001 CDP Number : 7232 Differential Components (ITRS) dx [m]: 90.3001 +- 0.0039 dy [m]: -132.1879 +- 0.0023 dz [m]: 34.6539 +- 0.0044 Date Measured : 2003-08-01 Determined by : IGN Additional Information : 13.03.02.01 Eccentricities Between Other Monuments on Site From: Monument Name : HARL DOMES Number : 30302M003 CDP Number : 7501 To: Monument Name : VLBI DOMES Number : 30302S001 CDP Number : 7232 Differential Components (ITRS) dx [m]: 41.680 +- 0.0158 dy [m]: -66.564 +- 0.075 dz [m]: 8.131 +- 0.039 Date Measured : 1996-06-01 Determined by : Ludwig Combrinck Additional Information : Back to top 14. Local Events Possibly Affecting Computed Position 14.01 Date : Event : Additional Information : Back to top 15. On-Site, Point of Contact Agency Information Agency : Hartebeesthoek Radio Astronomy Observatory Mailing Address : P.O. Box 443 : Krugersdorp 1740 : South Africa Website : Primary Contact Contact Name : Roelf Botha Telephone (primary) : +2712 301 3100 Telephone (secondary) : +2712 301 3226 Fax : +2712 301 3300 E-mail : roelf@hartrao.ac.za Secondary Contact Contact Name : Willy Moralo Telephone (primary) : +2712 301 3100 Telephone (secondary) : +2712 301 3215 Fax : +2712 301 3300 E-mail : willy@hartrao.ac.za Tertiary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : Back to top 16. Responsible Agency (if different from 15.) Agency : NASA Mailing Address : NASA Goddard, Code 61A : 8800 Greenbelt Road : Greenbelt, MD 20771 USA Primary Contact Contact Name : Jeffrey Dorman Telephone (primary) : Telephone (secondary) : Fax : E-mail : jeffrey.l.dorman@nasa.gov Secondary Contact Contact Name : Stephen Merkowitz Telephone (primary) : 301-286-9412 Telephone (secondary) : Fax : E-mail : stephen.m.merkowitz@nasa.gov Additional Information : Back to top 17. More Information URL for More Information : www.hartrao.ac.za Hardcopy on File Site Map : NO Site Diagram : NO Horizon Mask : NO Monument Description : NO Site Pictures : YES Additional Information : Back to top
Hartebeesthoek: Satellite Information (as a function of local time and satellite range)
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