|
Hi Clayton
A barlow lens is placed between your eyepiece and the focusser. It has various effects, but mainly it is the magnifying one that is of most significance. They seem to come in 2x, 3x and 5x. They also come in 2" or 1.25" diameters.
Do a bit of searching for "barlow" on this forum and you'll find recommendations.
Filters! Again, search the threads and you'll find some lengthy threads on filters with lots of references to useful sites. It really depends on what you want to be observing. It seems to me that there are about two or three types of filters that have various benefits for observers. They can be quite expensive! And you have to decide whether you need 2" or 1.25" or both.
|