I will chose one of these two scopes for astrophotography. I will be starting with a Deep space pro ccd. I know the mount for the LXD75 is its weak link and I will need to use Barlows. Aside from focal reducers, (not in fact a bad thing), any thorns associated with the LX90GPS?

Kind regards
Matt

A friend has the LX200GPS and I have the LX90 (non-gps) If we start setting up at the same time, I can be up and running in about 1/2 to 1/3 the time it takes his scope to level and align itself, then he usually has to do it twice. I'd say mine sets up in about 5 minutes, while the GPS version takes closer to 10 to 15.

Aside from that, the only issues I've had involve the polar wedge. I just can't seem to get the scope to understand that the wedge is there, so there is no hope for me to get it to track, or find anything at all with the wedge in place. Actually, there is another wedge related rant as well. It has to do with pointing north. On my field tripod for the ETX, there is a little traverse screw that will let you point it North, as long as you get it fairly north-ish at the start. The Tripod for the LX90 has no such traverse screw. When using the wedge, you have to align it to true north, and you have to do this by rotating the entire tripod to make the corrections. I do have an after market accessory tray on mine so there may be a way to do it with the stock configuration using the central bolt that holds the wedge in place.

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Thanks Tog. Sorry about the dely in responding. I had in fact wondered about the wedge issue but only because the RA drive on the LX 90 doesn't appear to be designed to incorporate a wedge at all. As my plan is to begin deep sky astrophotography of objects within 40 degrees of the South celestial pole, compensation for field rotation is a must. I am begining to think that a more conventional mount would be more appropriate.

Kind regards
Matt