OPTICAL ASTONAVIGATION SYSTEM Russian patent published in 2009 - IPC G01C21/00 

FIELD: physics; optics.

SUBSTANCE: invention relates to optical instrument making and can be used for determining coordinates of a ship from navigational stars. The optical astronavigation system has a periscope, goniometric device which has a stabilised sighting prim, stabilised base which is placed on a cardan suspension, collimator with a floating mark, adjustment device and an eyepiece, fitted in the lower part of the periscope, as well as two unstabilised sighting prisms, lying in one vertical plane parallel each other. The goniometric device is placed in the lower part of the periscope. One of the unstablised sighting prisms is fitted in the head of the periscope, and the other - in front of the goniometric device. The device also has a mirror, beam splitter and a cube, fitted such that, the direction of the light beam with the floating mark into the eyepiece is provided through the unstabilised sighting prism in front of the goniometric device, mirror, beam splitter and cube, and the direction of the viewed image of the object in the eyepiece is provided through the beam splitter.

EFFECT: smaller dimensions of the device while retaining accuracy of measurement.

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