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              <identifier identifierType="DOI">10.48436/pc0ge-sh436</identifier>
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                  <creatorName nameType="Organizational">International VLBI Service for Geodesy and Astrometry</creatorName>
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              <titles>
                <title>VLBI delay models for gravitational deformation of telescopes</title>
              </titles>
              <publisher>TU Wien</publisher>
              <publicationYear>2025</publicationYear>
              <subjects>
                <subject subjectScheme="FOS">Earth and related environmental sciences</subject>
                <subject>VLBI</subject>
                <subject>Gravitational deformation</subject>
              </subjects>
              <contributors>
                <contributor contributorType="ContactPerson">
                  <contributorName nameType="Personal">Krásná, Hana</contributorName>
                  <givenName>Hana</givenName>
                  <familyName>Krásná</familyName>
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                  <contributorName nameType="Personal">Abbondanza, Claudio</contributorName>
                  <givenName>Claudio</givenName>
                  <familyName>Abbondanza</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/029st3z03" affiliationIdentifierScheme="ROR">Istituto di Radioastronomia di Bologna</affiliation>
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                  <contributorName nameType="Personal">Artz, Thomas</contributorName>
                  <givenName>Thomas</givenName>
                  <familyName>Artz</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/041nas322" affiliationIdentifierScheme="ROR">University of Bonn</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Clark, Thomas A.</contributorName>
                  <givenName>Thomas A.</givenName>
                  <familyName>Clark</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/0171mag52" affiliationIdentifierScheme="ROR">Goddard Space Flight Center</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">de Vicente, Pablo</contributorName>
                  <givenName>Pablo</givenName>
                  <familyName>de Vicente</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/03yycdv57" affiliationIdentifierScheme="ROR">Instituto Geográfico Nacional</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Eschelbach, Cornelia</contributorName>
                  <givenName>Cornelia</givenName>
                  <familyName>Eschelbach</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/02r625m11" affiliationIdentifierScheme="ROR">Frankfurt University of Applied Sciences</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Garcia Espada, Susana</contributorName>
                  <givenName>Susana</givenName>
                  <familyName>Garcia Espada</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/05dz27378" affiliationIdentifierScheme="ROR">Norwegian Mapping Authority</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Gipson, John</contributorName>
                  <givenName>John</givenName>
                  <familyName>Gipson</familyName>
                  <affiliation>NVI, Inc.</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Greiwe, Ansgar</contributorName>
                  <givenName>Ansgar</givenName>
                  <familyName>Greiwe</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/04x02q560" affiliationIdentifierScheme="ROR">Bochum University of Applied Sciences</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Haas, Rüdiger</contributorName>
                  <givenName>Rüdiger</givenName>
                  <familyName>Haas</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/040wg7k59" affiliationIdentifierScheme="ROR">Chalmers University of Technology</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Hedekvist, Per Olof</contributorName>
                  <givenName>Per Olof</givenName>
                  <familyName>Hedekvist</familyName>
                  <nameIdentifier nameIdentifierScheme="ORCID">0000-0003-0801-3124</nameIdentifier>
                  <affiliation affiliationIdentifier="https://ror.org/03nnxqz81" affiliationIdentifierScheme="ROR">RISE Research Institutes of Sweden</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Heinz, Erik</contributorName>
                  <givenName>Erik</givenName>
                  <familyName>Heinz</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/041nas322" affiliationIdentifierScheme="ROR">University of Bonn</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Holst, Christoph</contributorName>
                  <givenName>Christoph</givenName>
                  <familyName>Holst</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/041nas322" affiliationIdentifierScheme="ROR">University of Bonn</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Jarlemark, Per</contributorName>
                  <givenName>Per</givenName>
                  <familyName>Jarlemark</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/03nnxqz81" affiliationIdentifierScheme="ROR">RISE Research Institutes of Sweden</affiliation>
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                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Kirkvik, Ann-Silje</contributorName>
                  <givenName>Ann-Silje</givenName>
                  <familyName>Kirkvik</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/05dz27378" affiliationIdentifierScheme="ROR">Norwegian Mapping Authority</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Lösler, Michael</contributorName>
                  <givenName>Michael</givenName>
                  <familyName>Lösler</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/02r625m11" affiliationIdentifierScheme="ROR">Frankfurt University of Applied Sciences</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">McCallum, Lucia</contributorName>
                  <givenName>Lucia</givenName>
                  <familyName>McCallum</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/01nfmeh72" affiliationIdentifierScheme="ROR">University of Tasmania</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Negusini, Monia</contributorName>
                  <givenName>Monia</givenName>
                  <familyName>Negusini</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/029st3z03" affiliationIdentifierScheme="ROR">Istituto di Radioastronomia di Bologna</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Nothnagel, Axel Gerhard</contributorName>
                  <givenName>Axel Gerhard</givenName>
                  <familyName>Nothnagel</familyName>
                  <nameIdentifier nameIdentifierScheme="ORCID">0000-0002-1295-9548</nameIdentifier>
                  <affiliation>TU Wien</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Nørbech, Torbjørn</contributorName>
                  <givenName>Torbjørn</givenName>
                  <familyName>Nørbech</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/05dz27378" affiliationIdentifierScheme="ROR">Norwegian Mapping Authority</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Plötz, Christian</contributorName>
                  <givenName>Christian</givenName>
                  <familyName>Plötz</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/01q6zce06" affiliationIdentifierScheme="ROR">Federal Agency for Cartography and Geodesy</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Rieck, Carsten</contributorName>
                  <givenName>Carsten</givenName>
                  <familyName>Rieck</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/03nnxqz81" affiliationIdentifierScheme="ROR">RISE Research Institutes of Sweden</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Sarti, Pierguido</contributorName>
                  <givenName>Pierguido</givenName>
                  <familyName>Sarti</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/029st3z03" affiliationIdentifierScheme="ROR">Istituto di Radioastronomia di Bologna</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Spetz, Jörgen</contributorName>
                  <givenName>Jörgen</givenName>
                  <familyName>Spetz</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/03nnxqz81" affiliationIdentifierScheme="ROR">RISE Research Institutes of Sweden</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Springer, Anne</contributorName>
                  <givenName>Anne</givenName>
                  <familyName>Springer</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/041nas322" affiliationIdentifierScheme="ROR">University of Bonn</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Swinstrom, Tilda</contributorName>
                  <givenName>Tilda</givenName>
                  <familyName>Swinstrom</familyName>
                  <affiliation>NVI, Inc.</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Thomsen, Per</contributorName>
                  <givenName>Per</givenName>
                  <familyName>Thomsen</familyName>
                  <affiliation>Interferometrics, Inc.</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Vittuari, Luca</contributorName>
                  <givenName>Luca</givenName>
                  <familyName>Vittuari</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/01111rn36" affiliationIdentifierScheme="ROR">University of Bologna</affiliation>
                </contributor>
                <contributor contributorType="DataCollector">
                  <contributorName nameType="Personal">Zhou, Boye</contributorName>
                  <givenName>Boye</givenName>
                  <familyName>Zhou</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/01nfmeh72" affiliationIdentifierScheme="ROR">University of Tasmania</affiliation>
                </contributor>
                <contributor contributorType="Other">
                  <contributorName nameType="Personal">Soja, Benedikt</contributorName>
                  <givenName>Benedikt</givenName>
                  <familyName>Soja</familyName>
                  <affiliation affiliationIdentifier="https://ror.org/05a28rw58" affiliationIdentifierScheme="ROR">ETH Zurich</affiliation>
                </contributor>
              </contributors>
              <dates>
                <date dateType="Issued">2025-09-28</date>
                <date dateType="Updated">2026-06-25</date>
              </dates>
              <resourceType resourceTypeGeneral="Model"></resourceType>
              <relatedIdentifiers>
                <relatedIdentifier relatedIdentifierType="DOI" relationType="IsDescribedBy" resourceTypeGeneral="JournalArticle">10.1007/s00190-014-0749-1</relatedIdentifier>
                <relatedIdentifier relatedIdentifierType="URL" relationType="IsDescribedBy" resourceTypeGeneral="Text">https://ntrs.nasa.gov/citations/19880009586</relatedIdentifier>
                <relatedIdentifier relatedIdentifierType="DOI" relationType="IsDescribedBy" resourceTypeGeneral="JournalArticle">10.1007/s00190-009-0331-4</relatedIdentifier>
                <relatedIdentifier relatedIdentifierType="DOI" relationType="IsDescribedBy" resourceTypeGeneral="JournalArticle">10.4401/ag-4739</relatedIdentifier>
                <relatedIdentifier relatedIdentifierType="DOI" relationType="IsDescribedBy" resourceTypeGeneral="JournalArticle">10.1007/s00190-019-01299-x</relatedIdentifier>
                <relatedIdentifier relatedIdentifierType="DOI" relationType="IsDescribedBy" resourceTypeGeneral="JournalArticle">10.1007/s00190-019-01302-5</relatedIdentifier>
                <relatedIdentifier relatedIdentifierType="URL" relationType="IsDescribedBy" resourceTypeGeneral="ConferencePaper">https://ivscc.gsfc.nasa.gov/publications/gm2014/034_Nothnagel_etal.pdf</relatedIdentifier>
                <relatedIdentifier relatedIdentifierType="DOI" relationType="IsDescribedBy" resourceTypeGeneral="JournalArticle">10.1186/s40623-024-02110-8</relatedIdentifier>
                <relatedIdentifier relatedIdentifierType="DOI" relationType="IsDescribedBy" resourceTypeGeneral="ConferencePaper">10.5281/zenodo.18088484</relatedIdentifier>
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              </relatedIdentifiers>
              <version>2025.09.28</version>
              <rightsList>
                <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode" rightsIdentifierScheme="spdx" rightsIdentifier="cc-by-4.0">Creative Commons Attribution 4.0 International</rights>
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              <descriptions>
                <description descriptionType="Abstract">Context

This file contains gravitational deformation information for various radio telescopes used for geodetic and astrometric VLBI. It is the extra delay introduced by deformation of the antenna given as a function of elevation.

Methodology



The data was collected from on-site personnel and during campaings described in the related publications

Involved persons are listed as "Contributors"

All related publications are listed under "Related work"


Technical details



The data is stored in fixed format ASCII

Lines that start with "#" are comments and can be ignored

For each antenna the general format is:



#  ANTENNA NUM_PTS SCALE (name of the antenna, number of points, optional scaling factor which converts the delay into ps (i.e., if scale is 3.336 than the raw values are in mm))

#  EPOCH YYYYMMDD  YYYYMMDD    beginning and ending epoch of model (this line is optional)

#  el1  delay1 (excess delay as a function of elevation, scale factor converts this to ps)

#  el2  delay2




Further details



version 2025.09.28 includes following VLBI telescopes:



EFLSBERG (Artz et al., 2014, J Geod)

GILCREEK (Clark and Thomsen, 1988)

HOBART26 (Lösler et al., 2025, EPS)

KOKEE

MEDICINA (Sarti et al., 2009, J Geod)

NOTO (Sarti et al., 2010, Ann Geophys)

NYALES20 (Hedekvist et al., 2025, EVGA pp. 100-105)

ONSALA60 (Nothnagel et al., 2019, J Geod)

ONSA13NE (Lösler et al., 2019, J Geod)

ONSA13SW (Lösler et al., 2019, J Geod)

WETTZELL

WETTZ13S

WETTZ13N

YEBES40M (Nothnagel et al., 2014, IVS GM)</description>
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