Alternatively you could use a camera adaptor with a reasonable quality compact camera and use the optical zoom to enlargen the image. I did when i used to run my 10'newt on a dob mount. I found I could get 15-20sec passes of jupiter through the field of view. I would then use pipp to stitch say three movie grabs to create a decent data set. This certainly works. I ran a 7.5mm tak eyepiece for 170 Mag for this image I took some time ago.
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