Meade Help Required - Collimation

[thunderchildobs]

After resolving my focuser problem, I now have a collimation problem.
The scope is a 14" Meade LX200 ACF.
When I look down the tube, I see the attached imaged. Something is does not look right. (See the area around near the red mark). It looks like the primary mirror is not square. Any suggestions on what is wrong? Can this fixed by adjusting the secondary?

When I get what is close to focus I get a very poor star image, a very noticeably fan shape image, not a round dot.

On the Meade which set of screws adjust the collimation, the inner or outer set. See the second image.

Thanks (again) Brendan

[Merlin66]

http://www.meadeuk.com/pdf/lx200_acf_manual.pdf
This only shows the three outer screws??? (p47)

But this ref:
https://www.astronomics.com/3-collimating-knobs-meade-16-lx200-with-six-screw-secondary.html
Shows that the INNER three screws are the collimating screws.

[AstroJunk]

The outer three screws hold the secondary onto its cell. The inner three are for collimation.

[AstroJunk]

My guess is that they never updated the doco after changing the secondary design!

[Greg Bock]

Brendan,
i wonder if the screws of your previous post were interfering with the mirror mechanism so your previous collimation was compensating for it?
Have you tried adjusting your secondary collimation screws yet? Very easy to do and adjust the mirror alignment.
You need to rotate the inner screws slightly, the Owners manual applies even though it is out of date. The secondary mirror and screws on my 14" are the same as the manual and i have followed those instructions which are correct and work well.