Collimation of a telescope's optics is a critical bit of maintenance that should be checked as often as possible. To maximize the performance of your optical instrument you need to ensure that the optics are properly aligned at all times. Today, the easiest and quiclkest method of collimationis with a laser collimator. Here is an informative article from the late great wizard of collimation , Howie Glatter, who will explain the entire process for each different type of telescope.
Learn the safe and proper way to keep all your optics crystal clear and performing at their optimum level