TeleVue Barlows and Powermates
The 4-element TeleVue Powermate image amplifier picks up where the Barlow concept can go no further. Powermate is a technically universal solution, using a positive field lens to redirect field rays. The result is an exit pupil that stays where the eyepiece designer intended. With freedom from aberrations, greater magnification potential, and compact size, the 4-element TeleVue Powermates raise the bar for image amplification.