|
Just be aware of couple of things with a star test. The image shown is pretty idealised in that it represents the view in perfect seeing. An unsteady atmosphere (which is most of the time) will make the rings jump around. It is still doable, just be aware of the fact. Also use a high power eyepiece and moderately bright star, 2nd or 3rd mag is often best I have found, and try for one high in the sky to minimise the atmospheric effects.
Malcolm
|