How do I collimate a SW MN190

[MartinB]

Title says it all really. Any tips much appreciated

[Whippy]

From memory, collimate it as a normal newt then do a star test at relatively high power to get it spot on. IIRC, the trick is to get the diffraction rings right both sides of focus, if they're not then it's a little out.

Not on my desktop atm, I'm sure I've got the full method bookmarked on it. I'll sort it out later.

Tony..

[John]

Tony's outline is the approach I'm using with my Intes mak-newt (that he sold me ). The Intes has an alloy plug in the centre of the primary so a conventional laser does not work - probably just as well as they aren't to accurate anyway

So I'm doing it the old fashioned way, star test on Polaris, adjust, re-centre, star test etc. The good thing is, with the Intes at least, once collimated it tends to stay that way

[adamsp123]

I use a Hotech Laser which collimates the secondary as well as the primary, plus it is spot on, best xmas pressie I could have got last year.

[MartinB]

OK, so just the same as a normal newt. Glad you said that about the Hotech Pete since I've just bought one largely with this in mind.

Thanks guys. Tony, would be very interested in that link