Tele Vue 5X Powermate - 1.25" - PMT-5126 Eyepiece Accessories Eyepiece barrels are antireflection threaded

Eyepiece barrels are antireflection threaded internally for higher contrast

Since the TeleVue Delos Eyepiece eye-lens measures a quite large 35mm in diameter

8 ft/3 m ft (2

because you may want to introduce an accessory like a flip mirror or filter wheel in between the Explore Scientific Focal Extender and a CCD camera

Tele Vue 5X Powermate - 1.25" - PMT-5126 Eyepiece Accessories Eyepiece barrels are antireflection threadedAbout the TeleVue 5X Powermate 1. 25" To understand the TeleVue Powermate, we must first understand the Barlow lens. Barlows amplify the power of a telescope. They can be considered "focal reducers" for eyepieces, or "focal extenders" for objectives. Terence Dickenson, in his Barlow test report in Sky and Telescope says: "Technology has erased the old objections. A modern Barlow will not degrade your telescope''s optics. Anyone telling you otherwise