According to space, Friedrich Berkowski was a specialist in a photographic process called Daguerreotypy, an ancient photographic process that used silver-plated copper treated with chemical fumes that made it sensitive to light.
Previous attempts to capture photos of solar eclipses had failed to show the contrast between the sun’s corona and the moon’s dark disk, but using a small, six-centimeter-diameter telescope, Berkowski took an 84-second exposure that begins immediately following the moon has moved fully in front of the sun.
It is worth noting that the peak of the total lunar eclipse is characterized by the fact that the moon covers the entire disk of the sun, and therefore only the corona of the sun is visible, and this is the most dramatic stage of the total solar eclipse.
It is also at this time that the sky gets dark, temperatures can drop, birds and animals often calm down, and it is known as the extreme point of the eclipse.
