An optical system for restoring a natural image combined with a digital image, in order to characterise and highlight the objects represented on the natural image. The optical system includes an objective lens, an eyepiece, a semi-reflective plate, a processing unit, capturing capabilities and restoring capabilities. Other embodiments relate to a method for producing such a digital image.

A celestial globe assembly includes a celestial body pointing pen. The celestial body pointing pen includes a light emitting mechanism. The celestial body pointing pen includes a reference marking at a bottom end. The celestial globe assembly includes a celestial globe. The celestial globe includes a spherical body. The spherical body has at least one star marking on a surface of the spherical body. The celestial globe assembly includes a celestial body recording cover. The celestial body recording cover is in semi-spherical shape. The celestial body recording cover is at least partially transparent such that a user can see through.

A celestial globe assembly includes a celestial body pointing pen. The celestial body pointing pen includes a light emitting mechanism. The celestial body pointing pen includes a reference marking at a bottom end. The celestial globe assembly includes a celestial globe. The celestial globe includes a spherical body. The spherical body has at least one star marking on a surface of the spherical body. The celestial globe assembly includes a celestial body recording cover. The celestial body recording cover is in semi-spherical shape. The celestial body recording cover is at least partially transparent such that a user can see through.

A system of navigation employing an emergency longitude slide ruler for stellar navigation is described. The emergency longitude slide ruler is equipped with several wheels having rulers with settings including of the longitude slide ruler of the present invention include year, date, hour, minutes, star angle measurement degree wheel, a longitude wheel, a circumpolar star field identifier wheel, star meridian transit angles wheel, and a time zone wheel. All wheels are of diminishing diameters and are laid on top of each other in descending circumference with minute gradations allowing each consecutive wheel to line up with its larger adjacent wheel according to proper settings to eventually indicate longitude. The system presents an efficient and expedient means by which an individual with very limited knowledge of navigation and celestial bodies can determine his or her location, including longitude.

The invention relates to an optical system for restoring a natural image combined with a digital image, in order to characterise and highlight the objects represented on the natural image. The optical system includes an objective lens, an eyepiece, a semi-reflective plate, a processing unit, capturing means and restoring means. The invention also relates to a method for producing such a digital image.

The invention relates to an optical system for restoring a natural image combined with a digital image, in order to characterise and highlight the objects represented on the natural image. The optical system includes an objective lens, an eyepiece, a semi-reflective plate, a processing unit, capturing means and restoring means. The invention also relates to a method for producing such a digital image.

The invention relates to an optical system for restoring a natural image combined with a digital image, in order to characterise and highlight the objects represented on the natural image. The optical system includes an objective lens, an eyepiece, a semi-reflective plate, a processing unit, capturing means and restoring means. The invention also relates to a method for producing such a digital image.

The invention relates to an optical system for restoring a natural image combined with a digital image, in order to characterise and highlight the objects represented on the natural image. The optical system includes an objective lens, an eyepiece, a semi-reflective plate, a processing unit, capturing means and restoring means. The invention also relates to a method for producing such a digital image.

Provided is a quick-responsive voice control technique even in use in a planetarium. A control device (100) of a projector (308) of a planetarium includes: a storage unit (304) that stores a plurality of commands for controlling the projector (308), flags indicating whether or not the respective commands can be executed, and keywords associated with the respective commands; a voice acquisition unit (301) that acquires voice data; a control unit (201) that controls the control device; and a communication unit (207) that communicates with the projector (308). The control unit (201) determines whether or not each of the commands for the projector (308) can be executed on the basis of state information of the projector (308), the state information being acquired through the communication unit (207), updates the flags on the basis of the determination result, generates character suing information from voice data acquired by the voice acquisition unit (301), acquires a command in which an executable flag is set from the storage twit (304) using the character string information as a search key, and transmits the acquired command to the projector (308).

Provided is a quick-responsive voice control technique even in use in a planetarium. A control device (100) of a projector (308) of a planetarium includes: a storage unit (304) that stores a plurality of commands for controlling the projector (308), flags indicating whether or not the respective commands can be executed, and keywords associated with the respective commands; a voice acquisition unit (301) that acquires voice data; a control unit (201) that controls the control device; and a communication unit (207) that communicates with the projector (308). The control unit (201) determines whether or not each of the commands for the projector (308) can be executed on the basis of state information of the projector (308), the state information being acquired through the communication unit (207), updates the flags on the basis of the determination result, generates character suing information from voice data acquired by the voice acquisition unit (301), acquires a command in which an executable flag is set from the storage twit (304) using the character string information as a search key, and transmits the acquired command to the projector (308).