I bought a tripod setup made by Orion. Not cheap, but it is a really nice addition to give the SkyMaster more functionability. Here is the link for what I purchased http://www.optcorp.com/or-5379-paragon-plus-binocular-mount-with-tripod.html
That really depends on what you are going to use them for. I bought the Orion Paragon-Plus XHD Extra Heavy-Duty Tripod Stand for Binoculars (Black) for my set. I originally got the binoculars for checking out the moon and some entry level astronomy. But I mostly use them for bird watching on the pond in my backyard. That tripod works pretty well for both - much better for the birds than planets.
Ashley, I bought these to study the moon, so the short answer to you question is 240,000 miles. Keep in mind that
these binoculars are designed to be mounted on a tripod of some sort. They are a little too heavy to be hand-held. Since they have 20-power magnification, any vibration or movement of your body is transmitted to the image. A great pair of binoculars overall!