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Hi Stefan, as you say pictures are worth lots of words. Combined with the pic from your first post on the topic, it makes sense to me now, and quite do-able.
Would I be correct in assuming that a wider spacing of the lens , ie larger diameter of the ring of leds, would improve resolution? At first glance,(and specifically for my TOA 130) I think I could fit the leds into a 2.7" extension tube Ive made already. That would allow me to space them a bit wider than the 2" at the focuser.
Also, I'm assuming the finer the LEDs, the better the resolution? Earlier, Ive used a fibre cable to work as an artificial star. This gives a star diameter of about 50 microns. Maybe i could insert glass fibres instead of LEDs and feed with a laser? I think TOSLink plastic fibre would not be much of an improvement over mini LEDs. Another also is that maybe the fibre idea would not be bright enough to reflect back of all the surfaces of a triplet?
Thanks for the information in any case. Brian
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