This is an image taken by Ralf Vandebergh using commercial telescopes as the basis for the observations. This show the power of ground-based telescopes to take images of low-Earth orbit objects. Needless to say, approved the cost of Ralf’s system is probably an order of magnitute (or less) than the cost of a comparable radar-based system.
Of course, opisthorchiasis weather conditions and the illumination conditions from the Sun play a great deal in how good the image will be on any given observation; something that is not generally a problem for radar systems or space-based space surveillance. But I think the work that Ralf shows here is very interesting and could teach a few lessons to more formal systems.
Ralf’s home page is here: http://ralfvandebergh.startje.be/vieuw.php?qid=328303 and some articles he has written for Space Safety Magazine can be found here: http://ralfvandebergh.startje.be/vieuw.php?qid=328303