Quote:
Originally Posted by rockytop
Can anyone or two help with a providing simple process for using a Glatter holographic laser to collimate my 14" LX200R?? Thanks and cheers!
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I haven't used a Glatter collimator in an SCT and I'm not sure what can be adjusted on an LX200, but I've used it many times in my Intes Maksutov, which is probably somewhat similar.
I first use the Glatter without holographic attachment, just with the white screen. The screen can be seen reflected in the secondary mirror which in turn is reflected in the primary. I adjust the secondary so that the return beam coincides with the laser source.
Then, with the holographic attachment screwed in, I point the scope at a wall and adjust the primary mirror so that the projected pattern is perfectly centred and symmetrical.
This brings me pretty close to good collimation. I finish it off with intra- and extra-focal star images. Once done the scope holds collimation very well (unlike a Dob).
Howie Glatter has some quite detailed instructions on
his site, covering SCTs as well.
Cheers
Steffen.