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I'm with Rick on this one. I was ridiculed, and howled and booed off of this forum several years ago for saying that I rarely had to adjust the
collimation on my 10" dob. My present 8" Eq mounted Newt has nice
concentric star test, and I can't remember the last time I had to do a
tweak, and I do occasionally take it out in the car, and I have to take it off the mount after every session. I am very probably about to be
ridiculed again, but for normal every day visual use the collimation can be
quite a way off before the average user will see any observable effect.
Incidentally, I checked the collimation on my 1980s orange tube C8
when I bought it years ago, and have never had to adjust it since.
I understand that some types of scope are more sensitive to
miscollimation than others, and also some designs such as truss tube
scopes are usually going to need a tweak after assembly; I am primarily
talking about solid tube Newts, and, amazingly, the several SW collapsible
dobs I have owned or used.
raymo
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