Solar camera

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The solar camera (English: solar camera ) is the solar microscope ( solar microscope ) or the magic lantern -like instrument which includes a movable mirror in two directions, which raises the sun's rays on a plano-convex lens great. This concentrates the rays on the negative and illuminates it dazzlingly.

The negative is close to the focal point of a portrait lens, which creates an enlarged image of the negative in exactly the same way as the lens of a magic lantern. In order to be able to follow the course of the sun, the mirror is moved by a heliostat or by turning it by hand.

The mirror is set up in front of the window of a darkened room, the rays of light fall into the apparatus in the room, the picture is focused on a frame and then photosensitive paper is stretched in place of the picture. The image then appears on this through the action of the sun's rays.

The image is completed as in the normal copying process. Instead of sunlight, electric light , magnesium light and petroleum light are also used successfully.

The inventors of solar cameras include David Acheson Woodward and court photographer Jacob Wothly .