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Timekeeping, Navigation, Surveying -
Cultural Astronomy and Instruments

32th European Society for Astronomy in Culture (SEAC)

& Gesellschaft für Archäoastronomie

Hamburg, Mo to Sa, August 25-30, 2025,

organised by Gudrun Wolfschmidt


Hamburg Observatory
(Photos: Gudrun Wolfschmidt)



Welcome, Committees, Registration & Abstract, Programme & Booklet of Abstracts,
Excursion & Activities Links, HVV, Tourist, Accomodation


Welcome

Port of Hamburg
(Photos: Gudrun Wolfschmidt)
Welcome to Hamburg - Gateway to the World
....
....
.... (will be updated)


General Information:

Locations

  • Centre for History of Science and Technology,
    Geomatikum, University of Hamburg
    Bundesstrasse 55 Geomatikum, 20146 Hamburg
  • Hamburg Observatory, University of Hamburg,
    Gojenbergsweg 112, 21029 Hamburg


Deadlines

  • Dec. 31, 2024 -- Website, first version
  • Jan. 15, 2025 -- Call for papers open (abstracts for lectures & posters)
  • March 30, 2025 -- Call for papers end
  • April 30, 2025 -- Communication if papers are accepted
  • May 31, 2025 -- Registration - Deadline for presenters to pay the fee
  • August 25-30, 2025 -- SEAC Annual Meeting

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Committees

Scientific Organizing Committee (SOC):

  • Prof. Dr. Gudrun Wolfschmidt (University of Hamburg)
  • Prof. Dr. Rita Gautschy (University of Basel)
  • Dr. Michael Rappenglück (Gilching)

Local Organizing Committee (LOC):

  • Gudrun Wolfschmidt (Universität Hamburg)

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Deadlines - Abstracts and Registration

Abstracts for Lectures and Posters Call for Abstracts

Topics of the Abstracts:

We cordially invite you to present and discuss your contributions on the topics of

  • timekeeping
  • navigation
  • surveying
  • cultural astronomy
  • archaeoastronomy
  • ethnoastronomy
  • history of science
  • heritage of astronomy
Relationships between cultural astronomy and other disciplines
(e.g. archaeology, anthropology, architecture, art, metrology, philosophy) can also be discussed.


Authors are required to send an extended abstract clearly explaining the background,
the data, the results, and the conclusions with the following requirements:

  • ca. 500-700 words
  • at least 3 references
  • 3-5 keywords
  • up to 2 color images may be included (300dpi)
  • a short biographical information
  • please send it in Word or LaTeX
Please indicate whether your contribution is intended
as an oral presentation or as a poster contribution.
Only one abstract per person as first author will be accepted!

Deadline for abstracts: March 31, 2025.

Please send your abstract to SEAC email

All accepted abstracts will be published in an abstract booklet.


Registration

Deadline: May 31, 2025.

Registration Form (will be updated)

Conference fee

.....- Euro for SEAC or GfA members,
.....- Euro for Students
.....- Euro for non members.

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Programme

Booklet of Abstracts (will be updated)


Hamburg, Geomatikum, Monday, August 25, 2025


  • .... h - Registration

  • .... h Lectures

    Opening Session:

    Chair: ....

    • .... Uhr - Welcome

    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....
    • .... Uhr - coffee break


    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....
    • Postersession


    • 13:00-14:00 Uhr - Mittagessen / Lunch -


  • .... Uhr - ....:
    ....
  • .... Uhr - ....:
    ....


    Left: Stars show the way -
    Navigation in Hamburg

    Right: Port of Hamburg
    (Photos: Gudrun Wolfschmidt)





    200 Years Hamburg Observatory
    founded at Millerntor in 1825
    by Johann Georg Repsold.


  • 17 Uhr - City Walk in Hamburg
    with the emphasis on Astronomy, Navigation, Surveying.


    Evening Dinner proposal:
    Blockbräu an den St. Pauli Landungsbrücken




Hamburg, Geomatikum, Tuesday, August 26, 2025

  • .... h Lectures

    .... Session:

    Chair: ....

    • .... Uhr - ...._

    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....
    • .... Uhr - coffee break


    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....


    • 13:00-14:00 Uhr - Mittagessen / Lunch -


  • .... Uhr - ....:
    ....
  • .... Uhr - ....:
    ....


    Planetarium Hamburg
    (Photos: Gudrun Wolfschmidt)




  • 19 Uhr ?
    Planetarium Hamburg,
    Linnering 1 (Stadtpark), 22299 Hamburg


    Aby Warburg (1866-1929) Exhibition --
    Cultural History of Astronomy and Astrology (Mnemosyne),
    originally opened in 1930 in the Planetarium Hamburg.



    Public Lecture - Öffentlicher Abendvortrag

    Dr. Michael Rappenglück (Gilching):
    Humans and the Cosmos:
    From the World Cave to the Big Bang --
    Anthropology, Ecospheres, and Cultural Cosmologies



Hamburg Observatory, Wednesday, August 27, 2025


Gojenbergsweg 112, 21029 Hamburg-Bergedorf


  • 10:00-13:00 Uhr Lectures - Vorträge

    ... Session - Hamburger Sternwarte
    Chair: ...

    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....


    • 11.00-11:30 Uhr Kaffeepause / Coffee break


    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....


    • 13:00-14:00 Uhr - Mittagessen / Lunch -


  • 14:00-15:00 Uhr Lectures - Vorträge

    . Session

    Chair: ....

    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....


      HS-Plan


    • 14:30-15:00 Uhr Kaffeepause / Coffee break




      Left: Equatorial, Merz of Munich & Repsold of Hamburg (1867)
      Right: Model of the Time Ball in Hamburg (1876-1934)


    • 15:00-17:00 Uhr
      Gudrun Wolfschmidt (guided tour):
      The Hamburg Observatory in Bergedorf,
      a culturally and historically significant ensemble





      Bergedorfer Schloss / Castle
      (Photo: Gudrun Wolfschmidt)

    • Sightseeing in Bergedorf






    • 20:00 Uhr Public lecture (German) -
      Library, Hamburg Observatory

      Prof. Dr. Rita Gautschy (Basel):
      Zeit und Zeitmessung im Alten Ägypten (PDF)






Hamburg Observatory, Thursday, August 28, 2025

Gojenbergsweg 112, 21029 Hamburg-Bergedorf
Library of Hamburg Observatory
(Photo. Susanne M. Hoffmann)


  • 10:00-13:00 Uhr Lectures - Vorträge

    ... Session - Hamburger Sternwarte
    Chair: ...

    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....


    • 11.00-11:30 Uhr Kaffeepause / Coffee break


    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....


    • 13:00-14:00 Uhr - Mittagessen / Lunch -


  • 14:00-15:00 Uhr Lectures - Vorträge

    . Session

    Chair: ....

    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....


    • 14:30-15:00 Uhr Kaffeepause / Coffee break


    • Workshop ....


    Tycho Brahe in the Castle of the Counts of Rantzau (1597 to 1599),
    Tycho portrait in his publication of "Astronomiae instauratae mechanica" Wandsbek 1598.


  • Short visit in Hamburg-Wandsbek:
    Bust of Tycho Brahe (1546-1601)
    at Wandsbeker Markt in Hamburg



    Melkeveien (Milky Way), Frida Hansen, Oslo (1898)
    (© Maria Thrun, MK&G)


  • Evening: The important Museums in Hamburg
    are open on Thursday evening.






Hamburg Observatory, Friday, August 29, 2025

Gojenbergsweg 112, 21029 Hamburg-Bergedorf

1-m-Reflector, Carl Zeiss Jena (1911), Hamburg Observatory
(Photo: Gudrun Wolfschmidt, © 3D-pano)


  • 10:00-13:00 Uhr Lectures - Vorträge

    ... Session - Hamburger Sternwarte
    Chair: ...

    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....


    • 11.00-11:30 Uhr Kaffeepause / Coffee break


    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....


    • 13:00-14:00 Uhr - Mittagessen / Lunch -


  • 14:00-15:00 Uhr Lectures - Vorträge

    . Session

    Chair: ....

    • .... Uhr - ....:
      ....
    • .... Uhr - ....:
      ....


    • 14:30-15:00 Uhr Kaffeepause / Coffee break


    • Workshop ....?


    Elbphilharmonie Hamburg
    (Photos: Gudrun Wolfschmidt)


  • 20 Uhr - Dinner
    ....



Excursion, Saturday, August 30, 2025

Gottdorf Globe in Schleswig, Model of the Globe (Berlin)
(Photos: Gudrun Wolfschmidt)

  • Castle Museum Schleswig, Gottdorf Globe

  • Lübeck, Astronomical Clock (1405/07)
    St. Annen-Museum & Marienkirche/St. Mary's church
    Lübeck, Historical City (UNESCO) and Hansemuseum


Left: Lübeck, Astronomical Clock in St. Mary's church,
Right: original Astronomical Clock in St. Annen-Museum (Photos: Gudrun Wolfschmidt)



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Links



Museums and Collections
in Hamburg University and in Hamburg

Flammarion, Camille (1842-1925): L'atmosphère. Météorologie populaire.
Paris: Hachette 1888, "La forme du ciel"
(Holzschnitt, Wikipedia commons)


Museums and Collections in Hamburg University


Creation, Hamburg Meister Francke (fl. 1424-1434)
MK&G (Photo: G. Wolfschmidt)


Museums in Hamburg

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HVV (Public Transportation / Öffentlicher Nahverkehr)


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Hamburg Tourist

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Hotels in Hamburg


Dammtorpalais (marked as a red dot in the picture on the right),
5 minutes from Dammtor station (Metrobus 4 to Schlump or
one stop with the S-Bahn to Sternschanze).

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December 4, 2024. Updated: January 26, 2025