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- 22:16, 4 November 2022 Vincent talk contribs uploaded File:LightCone.xlsx (A tool to simulate light cone in a telescope, finding the minimal inner diameters of each element of the optical train, finding pieces that cut the light path, finding where reflections take place based on images. Based on formulas from https://www.cloudynights.com/topic/484079-calculating-light-cone-diameter-at-different-distances/page-2#entry6335287 for light cone and obstructions and from http://www.wilmslowastro.com/software/formulae.htm#REFLECT for reflections.)