[austinstkong (Austin)]

I have started window shopping for a telescope and realised that I actually don't know what a f ratio is.

My research on the internet for some reason didnt seem quite helpful and all I was able to gather is that greater ratio results in fainter images and that it is calculated by focal length divided by aperture.

So further on from that, does it govern any other qualities of the image viewed and what type of ratios are best suited for doing what?

Thanks in advance.

Sorry if there has already been a similar post.