|
You say the tracking should be perfect after doing a three star alignment. The Synscan alignment routine has no bearing at all on the mount's tracking ability. It just allows the mount to know where it is pointing, so
that the Go To function works as accurately as possible. The polar alignment routine that I presume you are doing each time you set up your rig, decides how well it will track. The more accurate your polar alignment is, the better it will track. If you get the alignment down to
under an arc minute on both axes it will give round stars for up to
around 2 minutes at prime focus. Incidentally, for your purposes,
three star alignment is not necessary, most owners use 2 star.
I don't know what polar alignment method you are using, but if you
have firmware version 3.35 in your hand controller, you can use the polar alignment routine therein. Incidentally, no mount, however expensive, will give perfect tracking, which is why long exposures have to be
guided, either manually, or autoguided.
raymo
|