Hi Peter.
I have the Gotostar (an RS232 version) of the Gotonova USB system.
Gotostar was made and sold by njidea (China) but this company now sells it's stuff thru iOptron.
The system works a treat and the handset is a pleasure to use and it tracks targets very accurately. It doesn't provide alot of data about target objects (edit ie: info about what the object is) but it does have a list of targets that you could never get thru all of them. The only trouble the kits appear to have is that the company iOptron took ages to fix the ASCOM drivers. They now work well for the gotostar systems but there are still some issues with the gotonova systems. This system would make a good update to a vixen GP2D mount or a good EQ5 mount.
The gotostar ststem can use pulse guiding for auto guiding with ASCOM where as the gotonova is supposed to have a HBX type port for auto guiding...I don't know how that works. In any case the gotostar will accept auto guide com port commands (in it's RS232 connector)...edit...., commands like Me#, Mw#, Ms#, Mn# (move east, west...yada yada) and Qe#, Qw#, Qs# and Qn# (stop move east, west yada yada)) from guiders like the TV guider:
http://foto.astronomy.cz/TVGuider.htm
Although that said if you want accurate auto guiding then the CG5 is probably not the best mount to use!
Martin (user
mill) also has the same gotostar kit as me...but his CG5 mount is alot better then mine. My CG5 mount is poor.
Martin purchased his kit from njidea in China directly and saved quite a bit of money. Best to ask him about that.
Here is the gotostar yahoo group:
http://tech.groups.yahoo.com/group/ideaxuwen/
Here is the iOptron yahoo group:
http://tech.groups.yahoo.com/group/ioptron/
If you want more info or to see the system up and running then all you need to do is...call!...I'm in Lilydale Melbourne and Mill is only a few klms from me.