Anaglyph was first introduced in 1853 by Wilhelm Rollman in Leipzig, Germany. It was the first historical 3D stereoscopic visualization made from red/blue or red/green glasses.
The main purpose of anaglyph glasses is for the separation of images in each different color. Right eye glass may come in different colors such as cyan, blue or green; but the left eye glass must be red. Separation of images are seen when the left and right glass colors are mixed together. Anaglyph glasses works best when using the standard monitor or standard projector. Anaglyph images are produced by the brain with the help of perspectives in different colors of the glasses in each eye.
In red-blue anaglyph, the left eye with a red glass will produce white color image of the object with red outlines. And blue outline colors of the image will produce black color. While the right eye with either cyan, blue or green will produce the opposite colors as the left eye. White and black colors of the image are still perceived by both eyes. The brain is adaptable for colors and it can now produce a separated image in different distance; this is called the 3D imaging or anaglyph.
Anaglyph can be used in viewing astronomical images created to help further research and studies of the astronomers. With an anaglyph image of the celestial object; it is more interesting for the viewers to understand and enjoy the enhanced image.