The two red tulip anthotypes were exposed for about the same amount of time. I estimate about nine days give or take a rain day.
If you look at the lower right corner you can see rain did make its presence known despite wrapping the "contraption" in plastic. The contraption is usually a thin sheet of OSB, the paper coated with pigment, the garment, and Plexiglass all held together by spring clamps. The spring clamps show up occasionally around the periphery of the finished anthotype. Bridgette has described them as giving the finished piece a rhythm. I use to hate the artifacts they left behind, now I am kind of digging them.
This anthotype was made with the same emulsion as the "Little Gown" anthotype but I kept the red tulip color by adding a bit of citric acid to the emulsion. Normally this paper (Arches Cover) and Fabriano Artistico have a bit of buffer that pushes the color to the blue end of the spectrum. Flower pigments act as a pH indicator for naturalists. I have even made purple iris pigment red.
This is "Red Tulip (acidic) Peignoir #1". 51" (H) x 42" (w).
Speaking of iris pigment. I raided the last ones today. I have a bit frozen away and two sheets already coated one of which is exposing right now. I see plenty of purple gowns, peignoirs and pajamas in the future.
If you look at the lower right corner you can see rain did make its presence known despite wrapping the "contraption" in plastic. The contraption is usually a thin sheet of OSB, the paper coated with pigment, the garment, and Plexiglass all held together by spring clamps. The spring clamps show up occasionally around the periphery of the finished anthotype. Bridgette has described them as giving the finished piece a rhythm. I use to hate the artifacts they left behind, now I am kind of digging them.
This anthotype was made with the same emulsion as the "Little Gown" anthotype but I kept the red tulip color by adding a bit of citric acid to the emulsion. Normally this paper (Arches Cover) and Fabriano Artistico have a bit of buffer that pushes the color to the blue end of the spectrum. Flower pigments act as a pH indicator for naturalists. I have even made purple iris pigment red.
This is "Red Tulip (acidic) Peignoir #1". 51" (H) x 42" (w).
Speaking of iris pigment. I raided the last ones today. I have a bit frozen away and two sheets already coated one of which is exposing right now. I see plenty of purple gowns, peignoirs and pajamas in the future.
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