The 20"f4 is big and gives enormous light-gathering power and resolution but will still fit into the back of a medium sized hatchback. Rather than the single curved spider of the smaller sizes, this size has a stronger 4-vane arrangement.

Simple construction, Easy to assemble - Easy to use. Wood fully sealed and painted. 2" Focuser supplied as standard. Large Diameter Main Bearings using Teflon Pads.