Quote:
I have tried the mirror in the holder as is = zero extension.
I tried 40mm extensions - the focuser was fully out for closest focus - didn't work.
Tonight I tried again with 20mm extensions & it still didn't focus with the focuser fully in.
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What I've written above doesn't make sense.
5 months ago -with 40mm extensions & the focuser fully out I would have
only just had to move the RCC1 corrector further out in the focuser
to achieve focus & lock it in place with the screws in the focuser.
I obviously didn't take proper notes.
Whatever happened I decided that I needed to have shorter extensions for it to work -
In this case 20mm as opposed to 40mm.
now I don't know why -
lesson learnt - take proper notes!
cheers
Allan