On my YouTube Channel I take a lot of astrophotography photos to show you what you can see in the nights sky, unfortunately though they are not always perfect and this is because the mount does not always track accurately and to get around this I have gone and got myself a guide scope. In this article, I would like to list three good reasons why a guide scope would be useful in astrophotography. The first and most obvious reason you would want to get a guide scope is obviously to guide and PHD2 a free open-source software makes and excellent job of this, especially when used with my Astroberry . If you would like to see an example of the PHD2 in action then please watch the episode below. In the episode below I show a side-by-side comparison of the M65 galaxy, comparing tracking and non-tracking images. Although the guided footage is clearly better than the unguided, I would like to point out that both captures have the same exposure and so on, it is just that guided footage i