File:Using sextant swing.gif

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	This is a featured picture on Wikimedia Commons (Featured pictures) and is considered one of the finest images. See its nomination here. This is a featured picture on the English language Wikipedia (Featured pictures) and is considered one of the finest images. See its nomination here. If you have an image of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it, and nominate it.

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This image was selected as picture of the day on Wikimedia Commons for 16 June 2007. It was captioned as follows:

English: Animation of the use of a marine sextant to measure the altitude of the sun.

Other languages:

Afrikaans: Werking van 'n marinesekstant wat die son se invalshoek meet

Čeština: Animace měření zeměpisné polohy lodi na moří pomocí sextantu

Deutsch: Animation zum Gebrauch eines Sextanten um den Winkel der Sonne über dem Horizont zu messen.

English: Animation of the use of a marine sextant to measure the altitude of the sun.

Español: Animación del uso de un sextante para medir la altura del sol.

Français : Animation montrant l'usage d'un sextant de marine pour mesurer la hauteur du soleil.

Italiano: Esempio animato dell'uso di un sestante per misurare l'altitudine del sole.

Magyar: Animáció a Nap horizont feletti magasságának méréséről szextánssal.

Nederlands: Engelstalige animatie van het gebruik van een sextant voor het meten van de hoogte van de zon

Polski: Animacja zasady działania i korzystania z sekstantu

Português: Animação sobre o uso do sextante náutico para medir a altura do Sol.

Română: Animație care ilustrează utilizarea unui sextant pentru măsurarea altitudinii soarelui.

Slovenčina: Animácia merania zemepisnej polohy lodi na mori pomocou sextantu.

Svenska: Animering av hur en sextant används för att mäta solens höjd över horisonten.

Беларуская: Схема карыстання марскім секстантам для вымярэння вугла падняцця Сонца над кругавідам.

Русский: Наглядный пример использования морского секстанта для измерения угла возвышения Солнца над горизонтом.

日本語：海上で六分儀を使用して太陽の高度を測定する手順のアニメーション

中文：用六分仪测量太阳高度的动画。

中文（繁體）：運用航海六分儀來量度太陽高度的動畫

Summary

DescriptionUsing sextant swing.gif	English: Animation of the use of a marine sextant to measure the altitude of the sun Español: Animación del uso de un sextante para medir el ángulo de altitud del sol. Français : Animation montrant l'usage d'un sextant de marine pour mesurer la hauteur du soleil. Légende: (1) pointer le sextant sur l'horizon, (2) libérer le frein de la barre d'index, (3) Mener le soleil à l'horizon, (4) freiner la barre d'index, ajuster finement la lecture à l'aide de la molette. (5) basculer l'appareil pour vérifier l'alignement, (6) lire l'angle mesuré. Deutsch: Animation, die den Gebrauch eines Sextanten zur Messung der Sonnenhöhe zeigt: (1) Ausrichten des Sextanten zum Horizont, (2) Schwenken des Indexspiegels, (3) Sonne und Horizont egalisieren, (4) Feinabstimmung (5) Schwenken zur Verifizierung der Einstellung, (6) Ablesen der Messung. Português: Animação demonstrando o uso do sextante náutico na medição da altura do Sol acima do horizonte
Date	April 2007
Source	Own work
Author	Joaquim Alves Gaspar
Permission (Reusing this file)	I, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic license. 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. CC BY-SA 2.5 truetrue
Other versions	no captions with captions in Afrikaans
GIF development InfoField	This diagram was created with CorelDRAW.

Explanation of frames (also see Image:Marine sextant.svg)

- Point the sextant to the horizon in the direction of the Sun. The horizon is visible at left, through the glass, and also at right, reflected by the two mirrors. The index arm is at the zero position.
- Press the clamp to release the index bar.
- Rotate the index bar to bring the reflected image of the Sun to the horizon.
- The lower limb of the Sun is now almost touching the horizon. Release the clamp and adjust the sun's position with the micrometer.
- Swing the sextant to verify the sun's position (adjust if necessary).
- Read the altitude at the arc scale and micrometer drum (about 40º 15').

Quality image

This image has been assessed using the Quality image guidelines and is considered a Quality image.

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File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	22:00, 2 November 2007	787 × 393 (2.1 MB)	Alvesgaspar
	18:45, 9 April 2007	787 × 393 (2.1 MB)	Alvesgaspar
	18:32, 9 April 2007	787 × 393 (2.1 MB)	Alvesgaspar
	23:02, 7 April 2007	787 × 393 (2.1 MB)	Alvesgaspar
	17:27, 7 April 2007	787 × 393 (2.1 MB)	Alvesgaspar
	17:08, 7 April 2007	787 × 393 (2.1 MB)	Alvesgaspar
	09:12, 5 April 2007	787 × 393 (2.05 MB)	Alvesgaspar
	20:28, 4 April 2007	787 × 393 (2.08 MB)	Alvesgaspar
	22:32, 3 April 2007	787 × 393 (2.11 MB)	Alvesgaspar	{{Information \|Description=Animation of the use of a marine sextant to measure the altitude of the sun \|Source=own work \|Date=April 2007 \|Author=Joaquim Alves Gaspar \|Permission=below \|other_versions=Image:Using_sextant_swing.gif