Cheshire collimator for newtonian telescope
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Published on March 21, 2012
Description
This eyepiece is used to collimate your newtonian / printonian telescope's primary and secondary mirrors.
Inspired by this laser collimator,
thingiverse.com/thing:12624
but here there is no need to collimate the collimator ;-) .
Use: several tutorials online, I especially like this one:
astro-baby.com/collimation/astro%20babys%20collimation%20guide.htm
check also this:
atmsite.org/contrib/Carlin/collimation/kolli2.htm#mkcombination
and
skyandtelescope.com/howto/diy/3306876.html
Inspired by this laser collimator,
thingiverse.com/thing:12624
but here there is no need to collimate the collimator ;-) .
Use: several tutorials online, I especially like this one:
astro-baby.com/collimation/astro%20babys%20collimation%20guide.htm
check also this:
atmsite.org/contrib/Carlin/collimation/kolli2.htm#mkcombination
and
skyandtelescope.com/howto/diy/3306876.html
Instructions
This should be a close fit in a 1.25" eyepiece adapter like this one:
thingiverse.com/thing:19200
Check your printer calibration with test_cheshire.stl (only 5 mm high), eventually modify the diameter in the openscad file and regenerate a stl.
Print collimator_grid.pdf or dxf, cut, center and glue on the inner bevel. Enjoy!
Also included a mask to mark the center of a 4.5" primary mirror.
thingiverse.com/thing:19200
Check your printer calibration with test_cheshire.stl (only 5 mm high), eventually modify the diameter in the openscad file and regenerate a stl.
Print collimator_grid.pdf or dxf, cut, center and glue on the inner bevel. Enjoy!
Also included a mask to mark the center of a 4.5" primary mirror.
License
Cheshire collimator for newtonian telescope by Lanthan is licensed under the Creative Commons - GNU GPL license.
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