Quote:
Originally Posted by LewisM
It's all academic, considering this mount won't carry such a beast
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It's not about the weight. What Paul meant was long FL will change the image scale. The only way to put this one to bed is to give the focal length of your guider and your guiding camera pixel size. Then you can deduct the error in seconds of arc which is what Suavi's after. 1px will then be X seconds of arc.