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Buback

Spider Assembly for Newtonian Telescope

by Buback Nov 3, 2011
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I'd feel better with a but more glueing surface. Thanks for the advice!

How hard would it be to make this a bit larger... say for a 4 inch secondary? I'd like to have enough room for a secondary dew heater.

It shouldn't need to be enlarged, per se. the edges of the mirror will just be unsupported. If you did want to enlarge it, just scale the wedge part and leave the rest the same so all the fasteners fit.

I confirm this part assembles OK and is fully functional. As for the other pieces, very knowledgeable design, Buback!

You might want to enlarge the m3 axial nut-traps diameters by about 0.2 to 0.3 mm so the nuts fit in

You'll really kick yourself if you dribble epoxy on the primary, so ....

:( Yeah, Install the secondary first and do the gluing before you install the primary!