[trickybilly]

I have picked up a cheshire collimator and I'm up to try collimation for the first time (I will have to use the internet and Youtube to learn how to do it). One of the reasons I went for the cheshire is because I have heard it is safer for the eye than laser collimation (my one eye is damaged and I really need to spare my sight on the other for professional reasons). Are there any safety precautions at cheshires? Should I collimate at day or at night (like using the moon or a flashlight)? Any advice for personal/eye or equipment safety? The telescope which I'll collimate is a 200/1200 Skywatcher Flextube, dobsonian.