Celestron 93326 Omni Barlow Lens, Silver, 2 x 1.25 Inch

Product Information

U nleash the full pointing accuracy of your Celestron computerized telescope with a specialized telescope control software suite. SKYWATCHER 2X DE-LUXE ACHROMATIC BARLOW LENS Fantastic service super item very well made not had chance to use it yet as it's been too cloudy but it's a quality item so should not be a problem Thank you and ATB Phil. These are values which ideally would be at 0 but as our test optics are all curved lenses, there will always be astigmatism and coma present.

Our experienced staff can test refractor lenses up to 120mm aperture and provide a comprehensive 2 page report showing the optical quality and Strehl ratio, plus much more information.Barlow lenses offer an easy, economical way to increase the magnification range of your eyepieces, and Celestron carries a number of these highly useful lenses. With the Barlow element you can move the focal plane further out, eliminating this problem in most cases.

Named after English physicist and mathematician Peter Barlow, Barlow lenses add a second lot of magnification to each of your eyepieces while maintaining the existing eye relief.Please note that some telescopes, especially fast refractors and Newtonians, may not have enough focus travel to allow the photographic image to come to focus when used in prime focus mode. It enables you to use eyepieces with a long focal length and therefore comfortable eye relief for higher magnification. Eyepiece will increase the magnification of the eyepiece by 2 times, thereby making it easier to spot detail in the surface of the nearest planets. The two-element optics are fully multi-coated, and the edges of the lenses are blackened to cut down on internal reflections. This Barlow gave excellent views of Venus during moments of good seeing despite the planet’s low altitude.

This lens produces a diverging ray of light which, as well as magnifying the view, moves the eyepiece’s exit pupil farther outwards, thereby increasing the eye relief. Both Barlow lenses and Powermates act as image amplifiers by increasing the effective focal length of your telescope, thereby increasing the magnification achieved with any eyepiece.This can be very useful when trying to get to photographic focus with some Newtonians and Solar Telescopes, which lack the necessary amount of in focus travel to get a camera to a prime focus position. This Barlow lens required only a tiny tweak to the focus originally set using just our 17mm eyepiece. Generally, the higher the Strehl ratio, the lower the Astigmatism and Coma meaning a better image quality from your instrument. If one is inserted into the light path of any type of scope, the effective focal length of the scope is increased.

Today, our world-class team of optical and electronic engineers continues to push the boundaries of technology. You calculate the magnification of a telescope by dividing its focal length by the focal length of the eyepiece. However, if you are using eyepieces with a safety undercut you might well feel that this is a bonus, as this type of eyepiece can easily become stuck on some compression rings, which can be frustrating. From this, we can adjust the position of the test optic and the reference sphere to obtain a perfectly calibrated system. This excellent lens delivered great views of the Trapezium stars at the heart of the Orion Nebula with our 17mm eyepiece.This design ensures that the original eye relief of the eyepiece remains unchanged, making it more suitable for longer focal length eyepieces and avoiding the risk of vignetting. Safety undercut: Sleek black barrel with safety undercut to reduce the possibility of the Barlow lens slipping out of the telescope or diagonal.