[niko]

Hi all,

I've been testing a small newtonian on a manual eq mount (more on that later).

It states that its focal length is 1000mm but the OTA is clearly shorter than that (more like 500mm). It has an extension tube between the focusser and the eyepiece - is that what makes the focal length 1000mm or it is just a case of a lemon in sheep's clothing??

any comment warmly welcomed.

thanks.

niko