The slide consists of two glass plates. The image is applied to the first plate and a second covers this to protect the image. The slide normally has a inner paper border and then the slide is then held together with edging paper.
ASTRONOMY PHOTO - VIEWS OF SATURN BARNARD AT MT WILSON Magic Lantern Slide C1926
ASTRONOMY PHOTO PLANET NEPTUNE AND ITS MOON YERKES OBS Magic Lantern Slide C1926
APOLLO 9 Astronaut Rusty Schweickart signed OFFICIAL Astronomy FDC
Astronomer Royal Professor Arnold Wolfendale Signed First Day Cover. Astronomy
ASTRONOMY - SHIPS SHOWING THE CURVATURE OF EARTH C1926 Magic Lantern Slide
ASTRONOMY - ORBITS OF INNER PLANETS WITH POSITIONS C1926 Magic Lantern Slide
