Hi
The old LX200 10" OTA is quite a useful visual observing tube but don't expect it to be great for photography (except planetary) on a light duty mount.
You could probably pick one up in Australia for that amount with a U/S set of forks. Getting one from the US could be a bit iffy. There are many around now with unrepairable electronics. I have been repairing the electronics for years now but some parts are no longer available and I have run out of boards that have the necessary parts. These days when I get one for repair I always suggest they would be better off salvaging the OTA and putting it on an EQ6 at least
If you have serious photography in mind you would be far better off with an ED80 or similar and guiding gear fitted to your HEQ5 mount.
As for mounting the OTA on a GEM. If you are mechanically minded and have the tools it is quite easy. If not it could be quite a job to get a stable attachment of the OTA to the mount.
Barry
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