== '''How it works''' ==
Use imageJ’s circle tool (shift + oval tool) to measure the spot/ring patterns concentric to the (000) direct beam. From the area measurement, the radius (G) is found. From G = 1/d in reciprocal space, the d-spacing is calculated for each measurement made . The calculated values for G and d are added to the imageJ Results window in new columns .
== '''Image Requirements''' ==