4 pp. Six silver bromide photographs, two collotypes, one lithographed plate. All with plastic overleaf printed in white, showing direction and details of the sun. Photographs and plastic over-leaves are sandwiched in black paper mats, with text printed in white. (Folio) 63.5x53.3 cm (25x21"), two tone cloth.

The nine splendid plates in this large work show a solar eclipse in Algeria. The Hamburg Observatory Expedition chose Souk-Ahras, in Algeria, as the site for its August, 1905 observation of that year's solar eclipse. The main purpose was to photograph the inner corona of the sun. A large telescope was procured, with a special lens fabricated by Carl Zeiss. The photographs were made by Dr. Schorr, the director of the Hamburg Observatory, accompanied by Dr. K. Graf, who did the drawings for the plastic overlays and final lithograph in the published work. Due to the size of this lot extra shipping charges may apply.

The eclipse lasted only 3 minutes and 40 seconds. Dr. Schorr managed to make five exposures using various film stocks but, on the sixth try, the photograph was lost when the first rays of the sun reappeared. These five exposures, published in their original size, are the basis for the above work. Two groups of mountains on the moon were used to focus the telescope and can be seen on the plastic overlays. The work was successful in producing an accurate pictorial representation of the inner corona, and stands as a monumental presentation of the early twentieth century astronomical observation.