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Good or bad coll?
Whilst we are on the subject of collimation, could i have some opinions as to whether mine is in good shape?
Its a 10" F4.7, and the picture was taken with my phone up against an old film holder with a hole in the centre.
The focuser was all the way out, as per the instructions on one of the above links, but i cant see any mirror clips until i move the focuser inwards. They look Ok when i do, but i wondered whether i need to move my secondary mirror to see the clips when the focuser is all the way out.
Any advice you could give would be appreciated
Cheers
Bob
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