Quote:
Originally Posted by pmrid
G'day David.
Yes, and yes.
The tilt plate is great for getting the focuser exactly aligned with the center-spot on the secondary but no use for getting the primary mirror aligned with the secondary...
And as far as I can see, a plain Cheshire wouldn't be much help either. Perhaps I'm missing something though. I'd be the first to admit what I don't know but it's such a long list, ...
Peter
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Hi Peter
I tripped over this process the other week and it’s worked for me.
1) physically align your focuser using a collimated laser so it hits the secondary dot. Tick
2) with the collimator, adjust the secondary until the dot is central, alternatively using a laser collimator adjust the secondary so that the beam returns and hits the little hole in the laser collimator.
3) remove all the devices and then step back from the telescope. Peer through the focuser from a meter away to check that the vanes are aligned. This is where you adjust the primary mirror. See piccie. It’s tiny adjustments. You may want to unscrew and remove the baffle so you can see the vanes clearly.
4) you may need to repeat the process again then do a star test.
I used a Baader click adapter to make sure the laser collimator is held consistently in the focuser when I tried this.
Alternatively, wait for rick!