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Dear All, I'm seeking the opinions of those who have used a Mesu 200 in ServoCat and SiTech guises... I'm preparing to send my mount back to Lucas Mesu, to fix some occasionally odd dec motor behaviour I've been experiencing. It's a ServoCat / ArgoNavis version, and I've been very happy with that setup - I can be up and running with a 1 star alignment in minutes, and I don't need a PC for goto and visual operation. Now, since it's all the mount I'll ever need, and it's going all the way back to the Netherlands, I'm wondering whether I should take advantage of this and upgrade it to a SiTech controller while it's with Lucas. I'm aware of the main (?) differences between the two setups - no park, plate solve, meridian flip, only basic pointing model on the ServoCat/AN setup. I've also read Neil C's (@ncjunk) very useful thread following his own upgrade to the SiTech. Clearly the SiTech is a much more sophisticated system. BUT... I've recently discovered the marvel that is Sequence Generator Pro, and suddenly, I've got much more functionality with the Servocat system - there's a really effective plate solver which always puts the target in the middle of the frame; a meridian flip routine that uses calculated slew manoeuvres to get around the lack of a built-in flip routine, and the ability to automate the imaging of multiple targets in a session. In fact the only major element that seems to be missing, is "Park" - SGP can stop the tracking so the mount isn't driven to its limit, but it can't park in a specific orientation. I don't own a fully automatic observatory - my ROR needs to be closed manually, and if I change that it'll probably be to a dome, so full park isn't really something I need. Lucas has informed me that the SiTech upgrade is about €1210 - so not an insignificant sum, and on balance, I'm thinking that sticking with the Servocat / AN system is the right decision. Opinions gratefully received - am I missing something? Thanks Nigel