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Most telescope manuals that I have seen provide the electrical specifications for mains adapters to power their mounts. Most that I have seen are 12V DC and for GoTo operations, usually require a minimum of 2 Amps.
You need to be very careful with the connector on the mains adapter that plugs into your mount. Some are centre tip Positive whilst my Vixen GPDX mount is centre tip negative. If you get these mixed up you could fry the electronics in the mount unless the mount manufacturer has designed reverse polarity protection into the electronics of the mount. I always use Regulated mains adapters on my mounts.
Also, take the usual precautions with using mains power at night time, outdoors under damp conditions.
What model telescope do you have?
Cheers
Dennis
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