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Setting up a GEM (such as the LXD75-SC8) requires some more effort than setting up an equivalent size Alt-Az Goto mount (such as the LX90-8") which has the same optical tube assembly.
You will find that the LXD75 is a good mount for visual use, once you have mastered the star alignment process. Mastering the process requires patience, and perhaps the Springer book on the subject. I found the book to be much better than the Meade-supplied manual.
Personally, I have found the LX90-8" a better scope; it is quite robust and compact; the alignment process is dead simple (where the LXD75 process is not as easy); the only downside to the LX90 is that the fork mount base is quite close to the eyepiece / camera end of the scope OTA, and clearance is a problem with cameras.
There are more LX90-8" out there (in use) than LXD75s. I've seen four at my local club (WSAAG) but only one LXD55 (and that was under a carport roof, for sale).
As always, consider carefully your options, but it's better to learn by doing than always waiting for the perfect scope first up.
I have had four scopes; the first was an 8" f/4 newt on a non-goto, non driven GEM. I learned that it was too hard to find stuff with this device.
The second was an ETX80 3" f4 refractor on a goto fork mount. I learned that goto is the Answer for me.
The third was an LX90-8"GPS, which is still in use and really has been a great machine. I learned that more aperture is great, but the the accompanying size and weight is not nice at all (unless you have an observatory).
The fourth is an SN-10 10" f/4 Schmitt Newtonian on an LXD75. It awaits an obs. to be set up in, as it cannot handle winds and requires extended time in initial setup.
Perhaps the best advice I have had is that from Rod Mollise (search for his guide to used CATs) - he says the best scope is the one you use.
I wish you the best in your investigations. It's a fascinating hobby / pursuit. And one of the few areas where amateurs can make valid contributions to research.
Regards,
Tony Barry
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