Agree that! FWIW - I just posted two piccys of M20 one 2* 3600 seconds shots and the other 11 shots comprising over 7 hours data over 3 nights - guided by PHD - I'm very pleased with the tracking at this long focal length!
2 hours
http://www.iceinspace.com.au/forum/a...se.php?a=62333
7+ Hours
http://www.iceinspace.com.au/forum/a...se.php?a=62358