|Brand and Model:||Takahashi EXQ 1.6x|
|Description:||The Extender-Q is a visual and photographic amplification device that was originally designed for use with the Takahashi FSQ-106 and Sky 90 refractors. It changes the FSQ-106 from a 530mm f/5 to an 850mm f/8. The Sky 90 changes from a 500mm f/5.6 to an 800mm f/9. However, tests have shown that the Extender-Q will give you similar 1.6x magnification and focal ratio results with every Takahashi refractor, and not just the fast focal ratio FSQ-106 and Sky 90.|
This extender is not a simple two-lens achromatic Barlow lens, but rather a five-element optical amplification device that functions as both a visual Barlow and a photographic tele-extender. The Extender-Q produces a flat, color free, extremely high contrast image that can be used for high magnification lunar and planetary visual observation or photography and CCD imaging. An additional advantage of the Extender-Q is that it corrects the image in the ultraviolet portion of the spectrum that is invisible to the eye, but is easily recorded by CCD cameras. Stars that radiate strongly in the ultraviolet appear closer to their naked-eye visual appearance when imaged on a CCD camera through the Extender-Q. They do not have a bloated appearance on photos due to their normally invisible UV component being recorded by the CCD camera and added to the visual image. This feature only adds to the photo/visual capabilities of Takahashi scopes.