Poor collimation is the number one killer of telescope performance.
A laser collimator is by far the easiest technique and tool to collimate a telescope.
This is a 2" special collimator made for the Schmidth Cassegrain (either Meade, Celestron etc.) and is by far the easiest technique and tool to collimate a telescope. Once understood (and it is easy to understand) it will take no more than a few tweaks of your telescopes collimating screws to have your telescope operating at its maximum.
My telescope is now pier-mounted in a dome, and I check collimation just once in a year (no more bouncing and thumbling in-and-outs to disrupt it)so i'm selling it.
List priced at $160.00, here it goes for $110.00 SHIPPING INCLUDED ANYWHERE by mail; UPS shipping, add $20.00 and you get it in a week.
(note: this item was incorrectly indicated as having a list price of $175; my mistake, now corrected. Thanks Rich for pointing it to me)