Takahashi's clever take on the focal length extender. (Like a Barlow, but with brighter, more coherent images.)
The Vari-Extender can be used with any Takahashi refractor from the FS60 through the FS102. (I used it with a Sky 90.)
The basic Vari-Extender provides 1.6x increase in focal length. When combined with the included doubler lens and extension tubes, the focal length increase can extend to over 7.x
Various combinations of doubler lens and extension tubes can provide a wide array of power increases between the minimum and maximum values. Fine tune the focal length extension to meet seeing conditions, object viewed, and choice of eyepiece or imaging equipment.
A great accessory for planetary viewing or imaging, especially the upcoming Mars apparition!
Price includes insured shipping in the US or Canada.