Sorry Alan, that is not an equatorial mount; it is an altazimuth mount,
and is not suitable for exposures of more than 15-20 secs. If you want
to do proper astrophotography you must have an equatorial mount.
Andrews will put the 150Mak together with an EQ mount. The trouble is that I assume that you want a "Go To" mount, and a suitable "Go To" EQ
mount would be a bit more expensive than the Star Discovery mount.
The EQ3 Pro Go To would be suitable, but is $1000.
raymo
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