DE3506876C2 - - Google Patents

Info

Publication number
DE3506876C2
DE3506876C2 DE19853506876 DE3506876A DE3506876C2 DE 3506876 C2 DE3506876 C2 DE 3506876C2 DE 19853506876 DE19853506876 DE 19853506876 DE 3506876 A DE3506876 A DE 3506876A DE 3506876 C2 DE3506876 C2 DE 3506876C2
Authority
DE
Germany
Prior art keywords
sextant
filter
star
vertical
measurement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE19853506876
Other languages
German (de)
Other versions
DE3506876A1 (en
Inventor
Arnold 5581 Briedel De Houben
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19853506876 priority Critical patent/DE3506876A1/en
Publication of DE3506876A1 publication Critical patent/DE3506876A1/en
Application granted granted Critical
Publication of DE3506876C2 publication Critical patent/DE3506876C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C1/00—Measuring angles
    • G01C1/08—Sextants

Description

Die Erfindung bezieht sich auf ein optisches Hilfsmittel zum Senkrechthalten des Sextanten im praktischen Gebrauch. Von der senkrechten Haltung des Sextanten bei der Messung von Gestirnshöhen für die Navigation hängt wesentlich die Genauigkeit der Messung ab. Es gibt einige Versuche, dieses Problem zu lösen: Doppelprisma, Spreizglas oder Zusatz- Horizontprisma. Dabei wird aber entweder der Bildeindruck für den Beobachter stark verändert, oder die Aufmerksam­ keit von dem zu messenden Gestirn abgelenkt. Der Erfindung liegt die Aufgabe zugrunde, das Senkrechthalten des Sex­ tanten bei der Messung ohne diese Nachteile leicht möglich zu machen.The invention relates to an optical aid for holding the sextant upright in practical use. From the vertical position of the sextant during the measurement The height of the stars for the navigation essentially depends Accuracy of the measurement. There are several attempts to do this Problem to be solved: double prism, spreading glass or additional Horizon prism. But either the image impression greatly changed for the observer, or the attentive distracted from the star to be measured. The invention is based on the task of keeping sex upright aunts easily possible during the measurement without these disadvantages close.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß ein Strahlenfilter im Lichtgang des Sextanten, zum Beispiel vor der Fernrohroptik, angebracht ist. Dadurch entsteht für den Beobachter von jedem leuchtenden Objekt aus (wie Sonne, Mond, Planet, Fixstern) ein gerader Lichtstrahl nach zwei Seiten. Dieser Lichtstrahl steht genau quer zu den parallellaufenden Rasterlinien des Strahlenfilters. Bei senkrecht angebrachtem Filter (Rasterlinien laufen bei senkrecht gehaltenem Sextanten auch genau senkrecht) gibt der am leuchtenden Objekt entstehende Lichtstrahl die Waagerechte an. Der Beobachter setzt nun zur Messung des Höhenwinkels das Gestirn auf den Horizont und kann mit Hilfe des Lichtstrahls rechts und links des Gestirns die senkrechte Haltung des Sextanten leicht kontrollieren. Dabei ist sein gesamter Bildeindruck nicht wesentlich verändert und er kann sich auch weiter voll auf das zu messende Gestirn konzentrieren.This object is achieved in that a Radiation filter in the light path of the sextant, for example in front of the telescope optics. This creates for the observer from any luminous object (like Sun, moon, planet, fixed star) a straight beam of light on two sides. This light beam is exactly across the parallel grid lines of the radiation filter. With the filter attached vertically (grid lines run with vertical sextant also exactly vertical) gives the beam of light arising on the illuminating object Horizontal on. The observer now uses to measure the Elevation the star to the horizon and can with the help the vertical to the right and left of the star Check the position of the sextant easily. Be there overall image impression is not significantly changed and he can also continue to focus fully on the star to be measured focus.

Claims (3)

1. Sextant, dadurch gekennzeichnet, daß im Strahlengang ein Filter mit parallellaufendem Linienraster (Strahlenfilter) angebracht ist.1. Sextant, characterized in that a filter with a parallel line grid (radiation filter) is attached in the beam path . 2. Sextant nach Anspruch 1, dadurch gekennzeichnet, daß der Filter abnehmbar ist.2. Sextant according to claim 1, characterized in that the filter is removable. 3. Sextant nach Anspruch 1, dadurch gekennzeichnet, daß der Filter in den Strahlengang einschwenkbar angebracht ist.3. Sextant according to claim 1, characterized in that the filter can be swiveled into the beam path.
DE19853506876 1985-02-27 1985-02-27 Sextant with beam filter Granted DE3506876A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853506876 DE3506876A1 (en) 1985-02-27 1985-02-27 Sextant with beam filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853506876 DE3506876A1 (en) 1985-02-27 1985-02-27 Sextant with beam filter

Publications (2)

Publication Number Publication Date
DE3506876A1 DE3506876A1 (en) 1986-09-04
DE3506876C2 true DE3506876C2 (en) 1988-03-31

Family

ID=6263684

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853506876 Granted DE3506876A1 (en) 1985-02-27 1985-02-27 Sextant with beam filter

Country Status (1)

Country Link
DE (1) DE3506876A1 (en)

Also Published As

Publication number Publication date
DE3506876A1 (en) 1986-09-04

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee