[marc4darkskies (Marcus)]

Originally Posted by rat156

Hi Marcus,

By your own post earlier, you don't actually start or stop the mount in RA when guiding ...

Pardon my imprecise language Stuart! I meant starting and stopping a guide correction or better, speeding up / slowing down tracking!!

Originally Posted by rat156

... Don't forget to do the calculations to work out you minimum guide correction, depends on your image scale, it's something many people have set way to small.

http://www.ccdware.com/resources/autoguidercalcv4.cfm

Cheers
Stuart

I appreciate this advice. I've never imaged at 3100mm and it's become increasingly clear that I need to pay more attention to tuning my guiding to achieve an optimal result - a learning experience. I confess I hadn't even realized that the minimum move setting is important. It's conceivable that if set it too low the mount will constantly be trying to apply tiny corrections, possibly contributing to artifacts.