A Cyanotype is a blueprint using sunlight (also called a sunprint) or UV lights. The technique dates 1842 and is one of the first photography techniques, made famous by Anna Atkins, the first female photographer, who made books with photographic prints of flora and fauna.
Photosensitive chemicals are applied unto the surface of canvas , paper, fabric or other material. Where sunlight or UV light hits the chemical it turns into a stunning Prussian blue. Almost indigo.
A ‘X-Ray‘ print (called photogram) is made of objects arranged on top of paper, fabric, wood, glass or other material.
The resulting print is washed with water to finish it.