As always, you should check and refine the collimation of any collimator you buy. The collimation of the laser was more or less bang on when received, so no adjusted is needed yet. Read the instructions, do NOT tighten the pinch bolt in your focuser! The rubber bushings will expand when compressed, and produce a great, consistent fit. Fantastic collimator, I will recommend it to everyone.
Easy to use. Very good service and efficient response, highly recommended
I find this indispensable for collimating my 300mm F4 Newtonian before every imaging session. I also own a cheap collimator costing 1/3 of this. When I first collimated the scope I was surprised to find that the cheap one showed the same result as this one, but after further comparison I gradually became convinced that this one is far more reliable. If you have two collimators and you trust one of them better than the other, then you end up using the one you trust all the time and put the one you trust less in your tool box as a backup.
very easy to use and works great
I went to the HoTech web sight where they addressed my issue. The problem was with my testing technique. When I tested it according to their recommendations it tested just fine. I am very glad for that because I love this collimator. The SCA and the crosshairs make it second to none.
I hate to disagree with so many rave reviews but I would ask the other reviewers, did you check the collimation of the laser itself? I had a very satisfying experience collimating my scope with the HoTech but then, out curiosity, I checked the collimator itself. I used a set of "V"-blocks, shined the laser dot at a point on the wall, slowly rotated the body of the laser in the "V"-blocks. At a distance of about 10' the dot on the wall circumscribed an area about 1.5" in diameter. Apparently the laser beam is not parallel with the body of the laser. I was very disappointed. Given the price, I expected more. The SCA (Self Centering Adaptor) is a great idea but of no use if the laser beam introduces more inaccuracy that the "slop" ever could.