3-Element Apochromatic Lens - Superior sharpness and color correction, optical components, real physical computing magnification. | Compatible with most 1.25- Inch diameter telescope eyepieces, eyepiece filters, DSLR camera and other T-thread type accessories. | It not only increases the magnification, the image will be clearer than the average increase in magnification up to 15 times the image clarity. | Essentially triple the power of any 1.25" telescope eyepiece with the universal Barlow Lens. Suitable for high contrast, high power applications in any telescope. | High quality Barlow. Bayonet SLR cameras can be connected to increase the multiples of the camera to take pictures.

Threaded for standard 1.25- inch astronomy filters and barlow lens. | Comes with sturdy plastic case-proect the eyepiece from dust and moisture. | 1.25- inch 15mm plossl eyepiece set , gives the widest viewing field along with extra sharpness and long eye relief. | 4-element plossl design, has a approx 52 degree AFOV. Perfect for broad-field lunar observations, medium-sized star clusters, and a wide range of cloudy nebulas and deep-sky targets. | Fold-down rubber eyeguard Threaded for standard 1.25- inch astronomy filters.

Micro fiberThis is the latest version with new reticle engraving. Good alignment of the mount with the North Celestial Pole can be achieved in a short time by using the polar finder. cloth safely cleans optics without scratching or leaving residue. | The sighting is improved, with the precise alignment making long-term astrophotography possible. The viewfinder arrangement has been further improved, with precision alignment now possible allowing long exposure photography to be done. | Correct alignment of the mount can be achieved within a very short time with this improved polar finder. As the celestial North Pole (to which the telescope mount must be aligned) does not exactly coincide with the position of the Pole Star, using this polar finder is very important. | This accessory threads into the mount's housing along the Right Ascension axis. The optics feature a printed reticle that makes aligning on Polaris easy and fast. | Quick polar-alignment gives you more time to enjoy the view at the telescope eyepiece. Ensures accurate tracking and slow-motion control for your telescope mount. There are two models which have the same functions you may receive one of them. The new model is easier to use than the old one with Big Dipper and a target-spot. Please refer to the product description for details.