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Reviewed in the United States on December 28, 2023
Sadly, it would not mount on my Meade ETX-90, so I had to return it.
Dean Koepke
Reviewed in the United States on November 22, 2023
I bought this for my Celestron AstroMaster 130EQ and it works just fine after a bit of engineering. As you can see in the first attached photo, the slots in the unit's mounting plate are too close together for the screws on the telescope's focuser. Using just one screw worked OK, but it allowed the mechanism to move back and forth depending on which direction I moved the focuser..and I was not satisfied with that! My solution was to hot-air solder a metal plate to the mounting plate so that I'd be able to use both screws. No more movement! The final thing I did, that was not in the instructions, was to use thread-lock on all the screws. It is very easy to focus the edge of the Sun at 210x magnification. I also bought 20-feet of RJ9 cable to allow me to focus the scope while standing in front of my computer screen without having to dart in and out to the telescope 1000 times. The focuser still works well with no perceptible heating of all that cable (25 feet total). If it does run a tiny bit slower due to voltage loss...so much the better.Update: I got a new telescope...a GSO 8-inch classic Cassegrain, which has a Crayfprd focuser. The first focuser that I bought for my Celestron has been working so well that I decided to buy one for the new scope......and now that the focuser has arrived...I can report that it does not out-of-the-box fit the GSO 2-inch focuser, and like with the Celestron, some engineering was required. See the second photograph to see how I rigged it. I first used a 4-pound sledge to flatten the curve in the mounting plate, and then a file to elongate two of the holes so that they'd fit the focuser. I bought longer screws for the two holes and also longer screws for the two thumb screws supplied to mate the motor and mounting plate. And I used 4 nuts to make the mounting distance correct and to lock things down. I lastly put thread-lock on all screws. It now works like a champ...including through the 25 feet of cable! Either control unit can be used with either motor...so I am keeping no batteries in one to make it a spare.
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