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Another option is a cheap ~10mm eyepiece located 30cm or so from the LED. I used plastic irrigation pipe to build one like this quite successfully, with the LED at one end and the eyepiece at the other. A Meade 9.4mm Plossl that otherwise never sees use fits snugly on the end, giving an effective aperture size well under the resolving limit for my telescope at 50m. I threw a few baffles in the tube to clean up the internal reflections.
Regards,
Eric
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