File:2018-08-13-bonn-hauweg-meridianmarke-venusberg-02.jpg
Original file (2,976 × 5,312 pixels, file size: 9.07 MB, MIME type: image/jpeg)
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Summary
[edit]Description2018-08-13-bonn-hauweg-meridianmarke-venusberg-02.jpg |
Deutsch: Meridianmarke Venusberg; Der Meridianpunkt, der vom Bonner Astronom Professor Friedrich Wilhelm Argelander 1847 errichtet wurde, wurde 1848 bereits wieder zerstört. Er diente zur Festlegung der Ausgangsrichtung (Orientierung) des Rheinischen Dreiecksnetzes. Argelander bestimmte durch Sternbeobachtungen den Winkel zwischen dem Meridian (Südrichtung) der Bonner Sternwarte und einer auf dem Venusberg errichteten Zielmarke.
Der Punkt wurde 1980 von der Stadt Bonn, dem Landeskonservator Rheinland und dem Landesvermessungsamt Nordrhein-Westfalen durch eine ca. 1,50 Meter hohe Backsteinsäule wieder kenntlich gemacht und mit einer Hinweistafel versehen: Meridanmarke 1847Zur Festlegung der Ausgangsrichtung (Orientierung) des Rheinischen Dreiecksnetzes bestimmte 1847/48 der Bonner Astronom PROFESSOR FRIEDRICH WILHELM ARGELANDER (1799-1875) durch Sternbeobachtung den Winkel zwischen dem Meridan (Südrichtung) der Bonner Sternwarte und einer auf dem Venusberg errichteten Zielmarke.[1] |
Date | |
Source | Own work |
Author | Axel Kirch |
Camera location | 50° 42′ 46″ N, 7° 05′ 53″ E | View this and other nearby images on: OpenStreetMap | 50.712778; 7.098056 |
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Licensing
[edit]I have published this image as author under the Creative-Commons-Licence CC BY-SA 4.0.. This means that free usage outside of Wikimedia projects under the following terms of licence is possible:
- 1.1 The image is credited with "© Axel Kirch / CC BY-SA 4.0 (via Wikimedia Commons)"
- If this is not possible due to shortage of space, please contact me first.
- 1.2 If possible a weblink to the original image would be great: https://commons.wikimedia.org/wiki/File:2018-08-13-bonn-hauweg-meridianmarke-venusberg-02.jpg
I would be happy to receive a specimen copy or the URL of the website where the image is used.
Please write an email to wikipedia@akirch.de, if you
- need the image in a higher resolution
- need my postal address for sending a specimen copy
- have further questions to the terms of licence
This image is not public domain. Please respect the copyright protection. It may only be used according to the rules mentioned here. This specifically excludes use in social media, if applicable terms of the licenses listed here not appropriate.
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- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
- ↑ Meridianstein, Web-Archiv - Biene Bonn, 5. März 2016
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:45, 5 April 2020 | 2,976 × 5,312 (9.07 MB) | A.Axel.Kirch-Bonn (talk | contribs) | Uploaded own work with UploadWizard |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | samsung |
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Camera model | SM-G925F |
Author | Axel Kirch |
Copyright holder |
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Exposure time | 1/25 sec (0.04) |
F-number | f/1.9 |
ISO speed rating | 200 |
Date and time of data generation | 12:41, 13 August 2018 |
Lens focal length | 4.3 mm |
Latitude | 50° 42′ 46″ N |
Longitude | 7° 5′ 53″ E |
Altitude | 295 meters above sea level |
Orientation | Normal |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Software used | ACDSee Ultimate 2020 |
File change date and time | 18:11, 5 April 2020 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.3 |
Date and time of digitizing | 12:41, 13 August 2018 |
APEX shutter speed | 4.643856 |
APEX aperture | 1.851999 |
APEX brightness | 0.33 |
APEX exposure bias | 0 |
Maximum land aperture | 1.85 APEX (f/1.9) |
Metering mode | Center weighted average |
Flash | Flash did not fire |
DateTime subseconds | 950 |
Color space | sRGB |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 28 mm |
Scene capture type | Standard |
Unique image ID | 1430CBDE808E87460000000000000000 |
GPS time (atomic clock) | 10:41 |
GPS date | 13 August 2018 |
GPS tag version | 0.0.2.2 |
Date metadata was last modified | 17:54, 8 July 2019 |
Unique ID of original document | CF4980F8E4762A4B582B22443E2F5EB8 |
Contact information |
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