cheaper, unbranded laser collimators

[Jimtheslim]

I think I am becoming less confused the more I look at the diagrams. I guess it's just a case of taking the plunge and giving it a go. I take it you actually look down through the Cheshire, if so how is this different from a collimation cap?

[Ally8446]

A Cheshire has precise crosshairs when you look through it where as a colli cap doesn't.  This enables you to align the mirrors and reflections. 

Ally

[Ally8446]

Does this make sense ?

[Jimtheslim]

yes I had seen this before and does make sense. I suppose it's just hard to picture exactly what it looks like in real life when you get going with it

[Ally8446]

Here's a video that explains it a different way.  This is part 6 of a tutorial.  If you watch this one then watch 7, 8 and 9 and let me know what you think. 

https://youtu.be/35_O4-HZW8c

Ally

[Jimtheslim]

parts 6 and 7 were useful however in number 9 he's just moving the laser around. Would have been useful to see down the eyepiece to see what it was doing. As I understand he doesn't regard working on the secondary as 'collimation' but 'alignment'. Collimation being just for the primary