The important difference: The integrated micrometer guide scope holder

The Duomount XL is an improved variant of the normal Duomount. One of the two telescopes can be moved relative to the other by virtue of an integrated micrometer guide scope holder. This device is easy to use and allows you to center a guide star very easily. The telescope or camera can be mounted on top of the micrometer device using a standard Vixen-style dovetail plate (not included).

The micrometer guide scope holder eliminates the need to use bulky or difficult to use accessories such as guide scoep rings or an excenter. The guide star will always be on the optical axis of the telescope, eliminating the effect of a deterioration of the image quality towards the edge.

The micrometer device is strong enough to carry instruments up to about 7kgs weight, even for long exposure times.