Hi Paul,
As Martin says, with a close to level mount will "it will save time with polar alignment later ( less adjustments or iterations )". Having said that, I've gone to just using the bubble level and it generally works fine for me.
Being perfectly level isn't 'critical', but the closer you are the easier it will be to get a good PA. If it's not level, then adjusting one axis will have an effect on the alignment of the other axis, so you need to go back & forth between them to get it close. The closer to level you are, the less the effect will be.
Cheers,
Mark
|