[asimov (John)]

I'll keep it brief..Let's say my secondary was not collecting the full amount of light from the primary. IE: can't see the full primary when looking down the draw-tube.

What would be the visual consequence's of this....What would be the optical effect....WHAT would one see looking into an EP at Jupiter, for instance?

And could this be remedied by say, moving the primary AWAY from the secondary, bearing in mind that if you take it back too far, you will not come to focus.

Or is it even critical?

Thanks.