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I had thought of the same scope for autoguiding but was told [by And***]that the image quality of this scope was far inferior to the 70x500mm refractor for $150 from Andr***s Comm. I purchased the 70x500mm and with a barlow find the weight etc acceptable for autoguiding. Remember that a mak has a floating mirror that can give a different image shift to your main scope. You may want to use a cheap3x barlow to get the FL up to ~1500mm. Thats why I went the refractor route.
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