Dragonfly: An optical telescope built from an array of off-the-shelf Canon lens

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#1

This is pretty interesting and I thought you might particularly like this @deandddd - might be nice to put something like this together since it could be possible even for "lower" budget astronomers to build such things (not cheap by any stretch of the imagination, but feasible):

https://www.raspberrypi.com/news/dragonfly-spectral-line-mapper/

Might find some of the chatter in the comments here interesting: Dragonfly: An optical telescope built from an array of off-the-shelf Canon lens | Hacker News

#2

You can make 6 inch diameter telescopes from old zerox machine lenses.

then, there are filter size corrector lenses that screw on to the eyepiece barrel that perform edge correction. They are called "rRni" lenses.

Cheers!

Dean

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#3

The filter sized corrector lenses are 11/4 inch, the same size as the eyepiece barrels.

They correct the inherent error of the edge performance of the Xerox lenses.

This might help.

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#4

Agena Telescope Store