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Putting it into perspective:
if you want to use a full frame camera as per many imagers then it starts to get expensive -
you need a 3" focuser and corrector which would cost much more than Carlos Taylor's entire Newt. -
in fact 3 times the price or more.
Then a full frame CMOS camera would cost 4 times the price of his Newt.
The primary mirror moving around is a bugbear of just about every Newt.
What mirror cell can you buy that has any design in it that stops lateral movement?
People put stronger collimation springs in which helps but only masks the problem.
This should have been sorted out 40 years ago by the all those so called engineers
who designed the mirror cells.
Amateurs have had to do DIY modifications to make things work properly.
Consumer law says that a product sold should be fit for the purpose to which it is intended.
No one should have to re-collimate their Newt. every time they use it.
They should hold collimation for months or even years and certainly not change
collimation when the OTA is moved from vertical to horizontal.
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