The Darkest Points 200317
3 photo-grammes from the same HPGL file and source photograph.
2014 – ongoing. Series of photogrammes. 325mm x 325mm.
Plots of the darkest points in the night sky. The computer takes photographs of the night sky and examines each pixel for its luminance level. It then joins the darkest points to make constellations. The results are plotted with a green laser on black and white photographic paper in the dark room.
Photogramme. 350mm x 350mm.
First in series of The Darkest Points photogrammes. Approximately 8000 points connected.
Jagged curves due to error in bezier to HPGL conversion code.
Dotted grid pattern also unintended.
Fibre based paper texture.
The Darkest Points uses code adapted from program used for Kosmos plots.
‘Depth’ box determines number of points to join. Slider controls curvature of line connecting plots.
PU = Pen Up. PD = Pen Down. Pen Absolute as opposed to Pen Relative. Coordinates are in millimetres – set up with SC0,40,0,40,2 in the initialisation line. Native resolution of HPGL is 1/40th millimetre.
This is copied directly to serial port of plotter as a text file.