• Phototelescope and Photomicroscope

    A plate, coated with silver, invented by the artist Daguerre to take photographs was not very sensitive to light. Therefore, to be photographed in those days was not very pleasant. The photographer, first of all, smeared his client’s face with chalk: because of that, the photo came out better. Then he aimed the apparatus. And it was necessary to sit, not moving, with a face smeared with chalk for half an hour or even longer.

    Many years have passed since then. The photographic apparatus has become an accurate device. The lens is no longer made up of a simple eyeglass lens: it is a compound device made of several well-polished glasses. And with the advent of digital technology, the camera also “became wiser”.

    Nowadays, cameras of various sizes and purposes are manufactured.
     Modern Phototelescope
    Modern Phototelescope 

    In astronomy, the camera has discovered many new stars. The human eye, even armed with a telescope, does not see the light of very faint stars. If you attach a photographic apparatus to the telescope, then the light of such a star, which is not visible to the eye, will fall on the plate and accumulate as time goes by. In the end, it will leave its mark on the plate. Of course, such photographic surveying requires long hours.

     Modern Photomicroscope
    Modern Photomicroscope
    About a hundred and fifty years ago, the idea arose to compose a photographic atlas of the entire starry world. This work was so great that it could not be done by one observatory. Twenty observatories from various countries undertook it. Each of them received its own stretch of sky. In total, more than forty thousand photographs were taken, on which about thirty million stars were captured - ten thousand times more than they are visible to the naked eye.

    The idea to attach a camera to a microscope came for the first time to bacteriologist Robert Koch. When Koch discovered the tuberculosis bacilli, he wanted to sketch them to show other scientists how they looked. But a drawing is usually not quite accurate. Then Koch decided to take a "portrait" of the bacillus, he attached a camera to the microscope. The photo was crisp and clear. Everyone could see what the terrible tuberculous bacilli looked like.
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