How does a newtonian reflecting telescope work?


Posted February 1st, 2010 by admin 3 Comments »
telescope
Betafett asked:


My new telescope has piqued my curiosity–More specifically, why is it that when looking into the eyepiece we don’t see the cross shaped mount for the diagonal mirror (or the mirror itself?) in the image? I can’t get my head around the problem and it’s been so long since I did optic physics that I’ve pretty much forgot how it all worked….

How to operate a 6″ Newtonian Telescope with Equatorial Mount?


Posted November 30th, 2009 by admin 3 Comments »
telescope
Milton B asked:


New to astronomy. How do I make the telescope go up and down? It has controls for making SLIGHT corrections, but I can’t move it to view high overhead or down low towards the horizon.
Suggestions?

how’s a good way to use a digital camera through a telescope?


Posted March 19th, 2009 by admin 4 Comments »
telescope
AdCh asked:


i’m not talking about SLR cameras, just a normal digital camera. and if possible without buying any extra attachments. just a way to make it stable.

using a newtonian telescope btw.

How do you make a Newtonian telescope?


Posted February 22nd, 2009 by admin 3 Comments »
telescope
falcons_rock! asked:


How would you go about constructing a Newtonian type telescope and about how long would it take? Any design ideas?

Could you help me with collimating my Newtownian telescope?


Posted February 3rd, 2009 by admin 5 Comments »
telescope
wrack ‘n’ ruin asked:


I have a Newtonian reflector telescope that I’m practically scared to use, partly because I can’t find a good, “Collimation For Idiots,” comprehendable website and partly because nobody I know knows what the heck I’m talking about. Any tips, tricks, or recommended websites out there?
EDIT: There’s a tool?

Which eyepieces work better with a fast newtonian telescope?


Posted January 31st, 2009 by admin 3 Comments »
telescope
Simsim asked:


I heard that eyepieces that deliver great views in a long focal ratio refractor might perform poorly in a “fast” newtonian.

What are the factors that need to be taken into consideration when choosing eyepieces for a “fast” newtonian?
- which eyepiece design works better?
- does the focal length of the eyepiece have any effect on image quality?

My telescope is a 203mm, f=1200mm Dob.
Thanks!