Hi,
Last year I bought a Celestron 127 EQ Telescope. I have enjoyed using it and I have learned pretty well to collimate it quickly and never had any problems with it. However, a few weeks back my cat somehow managed to drop the whole thing and it hit against the floor pretty hard (seeing it on the floor hurt me so much lol). Luckily, nothing was broken. Both the primary and secondary mirrors are fine, but they obviously moved around when it dropped. However, after collimating it back and doing a star test, I noticed a weird spot on one of the "quadrants" of the light. I've attached a picture of this below. No matter how perfectly I seem to collimate it, I always get this spot on the same quadrant, even when I purposefully uncollimate it. This makes it impossible to focus the star or planet since there will be a huge coma on it. I have tried removing and putting back in the primary mirror evenly but it doesn't seem to work anyway. As I mentioned before, I am well used to collimating my telescope, but this weird spot is a first for me. The only thing that comes to mind is something to do with the focuser tube being crooked after the fall. I would appreciate any help or suggestions from people who have seen this kind of spot during observation.