Accessories are very important to any observers observing kit. Eyepieces are the most important, but other things like Dew Heaters or special cords to run a laptop off a 12 V battery, can be just as vital to a long observing session.

I find that the more you go out observing, the more you need to make observing easy i.e eliminating dew, increasing the size of you finder etc. Here are some catagories of accessories which I will elaborate on in a bit more detail in each section.