Originally posted by cgw_vince Same advice than wildlifephotog.
One more advice: the quality of your viewing experience will directly depend on the quality of your eyepieces. In my opinion, that's where the spending effort should be.
- Vincent
Not always the case. The telescope includes all parts as a visual optic system. The optical system is more important as than eyepieces. Manufacturing a high quality eyepiece, small surfaces, is much easier compare to a large optical surface. A scope main optics should have at least a quality of 1/10 wave error on all surfaces. The combined main and secondary mirrors of a newtonian type scope for 1/10 error will show a final error of 1/5 wave at the eyepiece, added errors. A scope should never be below a total of 1/4 wave to be acceptable.
Lots of books and info available out there. I have a 16" F5, table driven newtonian and weights 175 lbs. My optics are 1/22 wave for the main mirror and 1/25 for the secondary, both made by a local master optician. One can find very good commercial telescopes but knowing their capabilities is often the shortfall of many beginners. Astronomy has been a 20 year plus hobby. I used a Meade 8" F10 for 5 years. It was a good one but many have complained of poor quality of optics.
Your telescope eyepiece is equivalent to the viewfinder on you camera with the lens as your main optical unit. In a camera, the image quality from the optical system is viewed by the imaging system (ccd) while a scope transfers it to your eye via the eyepiece. Your viewfinder does not have to be very good but an eyepiece does. In the market, an average eyepiece from a well know producers, Meade or Nagler and few others, will render very good results using a good optical system.