Notes on building a Newtonian. Dave Siegrist ATMoB (nt1u at hotmail dot com). Newtonian Telescope Notes. You can make a telescope! Grind or buy the optics Buy a kit, or do it all from scratch Buy some parts or build it all Build it!. Goals for today. I will highlight
Notes on building a Newtonian
Dave Siegrist ATMoB
(nt1u at hotmail dot com)
Secondary Mirror sizes (calculated for d = .5 degree)
Size: vertical is mirror diameter horizontal is f#
Size is nominal: find the closest size that meets requirements.
L = (D/2) + (D/10) + 2.5 Your L will be different.
must be adjustable to center (not easily though)
must have ‘narrow’ arms
must not vibrate (no single arm spiders)
easy access for collimation
Make or buy: you choose (not hard…)