GSO Laser Collimator

[Steffen]

I've got a GSO laser collimator that I haven't used in a while. Recent collimator threads reminded me to get it ready for sale, so here it is.

It is the standard 1.25" model as sold by Lee Andrews, just like this (http://andrewscom.com.au/images/products/telescopes/accessories/gs_collimator.jpg) one.

It is in slightly used but very good condition. It has a few rub/scuff marks but no scratches or dents. The cheshire screen is pristine. I've removed the laser warning sticker, which is probably illegal but it interfered with my V block. The collimator has been hand collimated by yours truly today to < 2mm at a distance of 12m. It is on the original set of batteries which still worked today but will eventually need replacing.

I'm asking $40 plus postage (pick up welcome), which is a third off new price.

Cheers
Steffen.

[Steffen]

Bump. Anyone?

This is a very decent piece of equipment, and well collimated.

Cheers
Steffen.

[dulwich.hill]

Hi Steffen,

Can this laser eyepiece be used to collimate refractors?
Have you ever done this? I've only got a cheap pastic chesire that came with the scope.

Also, I just noticed you bought the AOE 80ED telescope. Did you say you didn't want the alt-az mount? How much do you want for it?

Cheers mate,

James

[Steffen]

Hi James,
the collimator is for Newtonian scopes. It's based on the principle that the laser beam completely folds back on itself and hits the exact spot where it came from.

I don't think it would be terribly useful for collimating a refractor, but at least you could check that the beam exists the objective lens square in the centre. I guess for refractors a laser with holographic attachment (like the Glatter ones) would be more practical.

Regarding the ED80, I bought it without tripod and mount, to save on shipping. Just contact Dave, he'll be glad to get rid of it.

Cheers
Steffen.

[erick]

Dang it, Steffen, I'll buy it. Now I only have a 2" laser, I get caught sometimes asked to help someone with their scope and it has a 1.25" focusser! PM coming. Eric