Televue 2.5x Powermate 1.25 inch (1-1/4 in.)

Where precision and performance meet, the Tele Vue 2.5x Powermate 1.25" Image Amplifier stands out. This advanced optical tool amplifies power while maintaining the eyepiece's eye-relief, enhancing your viewing experience. It also slows down your telescope's f/#, resulting in improved eyepiece sharpness. The 2.5x Powermate Barlow is a compact, 4-element parfocal lens system that introduces compensations for eyepiece aberrations. It features a unique design that combines a negative achromatic doublet with a positive "pupil-correcting" doublet. This design ensures your eyepiece operates with pupil locations as intended by the designer, eliminating mismatch issues.The Powermate optimally matches its power to your eyepieces, eliminating the need for an additional "interface lens". This is because the Powermate has this feature built-in, offering you a seamless viewing experience. The Powermate is more than just a Barlow. It includes full multi-coating and other special touches from Tele Vue, such as a safety undercut on the chrome barrel and captive lock screws that can't fall out. Tele Vue's 100% QC program at f/4 ensures that the Powermate will add dramatic power to your favorite eyepieces without adding anything else. For instance, if you own a 22mm Panoptic, the 2.5x Powermate will provide you with the power of an 8.8mm focal length eyepiece. The Powermates are designed to be parfocal with Tele Vue's 1-1/4" 90-degree diagonal, adding a level of convenience not previously available with any Barlow. The 2.5x Powermate is compatible with Dobsonian/Newtonian owners using Tele Vue's Paracorr coma corrector. It also accepts the Tele Vue PTR-1250 T-ring Adapter for close coupling cameras and CCD Imagers. For imaging purposes, the user can simply unscrew the eyepiece holder barrel and screw on the T-Ring Adapter instead. In conclusion, the Tele Vue 2.5x Powermate 1.25" Image Amplifier is a sophisticated tool that enhances your viewing and imaging experience, making it a valuable addition to your telescope setup.

Latest Version Accepts the T-Ring Adapter Vignetting edge field aberrations and pupil movement - all introduced when using Barlows with long focal length eyepieces are minimized. Telecentric operation (field rays leave parallel to optical axis unlike Barlow lenses which diverge rays). This is ideal for Hydrogen-alpha filter use such as with Daystar models. High performance for image amplification CCD or film (some of the finest Earth-based planetary imaging is being done with Powermates). Flexible for visual and imaging with all types of telescopes and eyepieces. Essentially Parfocal and with nearly constant magnification regardless of image distance behind top surface (except 5x model which increases 1x for every 35mm of image distance i