Quote:
Originally Posted by rcheshire
Below is an example of what I have been told is associated with not dithering, called differential flexure. Polar alignment was particularly good on this occasion. So even DSLR users need to dither - and I thought that came with age.
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Wait a sec, differential flexure is a problem during guiding (you get trailed stars even if the guiding is perfect) and dithering is what you or software does between exposures, while the guider is stopped. You dither so that sensor artifacts can get rejected during image stacking. Am I missing a turn of phrase above?
EB