|Brand and Model:||Sirius Optics VFS|
| Visual Back
|| Full Aperture
|Description:||Sirius Optics Variable Filter System - (VFS)|
Telescope used: Skywatcher 6" Achromat Refractor-f/8.
This is one nice piece of equipment. It has a simple and elegant design. It is anodized aluminum with a flat black finish. A small portion of the wheel protrudes out of a flattened side of the circular metal housing that contains the filter. This housing has 1.25" in-out barrels. It feels like it weighs a little over a half a pound. There is also a really nice red engraved plate.