SingAstro

Hi,
This is not exactly for pure beginners (understanding the geometry and optics theories can be challenging), but it has enabled me to know the equipments better:-

Astronomy articles by John J. G. Savard
http://www.hypermaths.org/quadibloc/science/optint.htm

Enjoy reading!

At least the first few sections are quite easy. Good find!

Yah, A goof find I agree.

I was trying to find articles like these recently.

Anyone has links to different types of lens quality? Recently some of us were talking about the type of lens different makers use. Thanks.

Hi,
And here is a similar article from China (in simplified Chinese font format):-

http://www.cosin.com.cn/article_view.asp?id=353