Hi Peter, my drive is very good and requires minimal input from my drive corrector to keep Jup on the chip.
Windage on my tube, which is about 19" O.D. and close to 6 ft long is another matter. Without the protection offered by my dome there would be many nights where it would be impossible to keep Jup on the chip.
At the moment if I centre Jup on my 640x480 pixel frame I have a gap to the top and bottom of the frame of approx 32 pixels, not much to play with.
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