Focal Ratio of Telescope:
Diameter of Dust Donut in Pixels:
CALCULATIONS:
Distance of Dust Donut from CCD Detecter in Milimeters: 13.600
Distance of Dust Donut from CCD Detecter in Inches: 0.535
USEFULL LINKS:
Finger Lakes Camera and Filter Wheel Diagrams
SBIG STL Camera Series Diagram
SBIG STX Camera Series Diagram