The Explore Scientific Twilight II Alt-Azimuth Mount is equipped with a HD (heavy-duty) tripod. It allows quick and easy viewing with small or mid-sized telescopes. It has a dual head that allows you to mount two of your favorite telescopes to compare views or to share with a friend as you scan the skies. The Explore Scientific's TwiLight II Mount and Heavy-Duty Tripod is perfect for scanning for comets, or anytime you want a stable grab-and-go mount for observing the stars or the landscape ahead. The idea here is simplicity, strength and smoothness. There is no drive and no alignments. Just attach your telescope(s) and start observing.