SVBONY SV216 Barlow Lens 2x Telecentric FMC Coating Focal Extender for Planetary Photography and Astronomical Telescopes 4-element 1.25-inch

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. The SV216 Barlow lens uses a four-element telecentric design that effectively extends the focal length of the primary telescope without introducing the chromatic aberration and vignetting problems that plague most users, and also offers superior spherical aberration control, resulting in a flatter field of view than a standard Barlow lens. The SV216 Telecentric Barlow Lens has a constant magnification of 2. The four-element design and optimized optical structure of the Barlow Lens ensure that the magnification of the Barlow Lens remains the same no matter where the Barlow Lens is installed in the optical system. The SV216 2x Barlow lens adopts a triple screw design and coaxial locking device, which can improve the concentricity of the optical axis of your system and greatly improve the image quality. The four lenses of the SV216 Barlow lens are fully multi-coated to make the image bright and sharp, and the blackened edges of the lenses eliminate internal light scattering to maximize image contrast. The low magnification eyepiece is combined with the SV216 telecentric 2x 4-element Barlow lens to enjoy the magnifying effect of the high magnification eyepiece, while the exit pupil distance is within the comfortable viewing range of the human eye. The feature of the SV216 telecentric Barlow lens is that the magnification does not change regardless of the distance between the Barlow lens and the camera sensor. With a normal Barlow lens, the magnification changes as the distance to the sensor increases.