Tele Vue 4X Powermate - 2" - PMT-4201 Eyepiece Case This model has click stops

This model has click stops every mm

just like a Barlow lens

Pixel Size: 2

blackened lens edges

Camera Resolution: 5MP - 9 different settings to choose from ranging from 640x480 to 2592x1944

Tele Vue 4X Powermate - 2" - PMT-4201 Eyepiece Case This model has click stopsAbout the TeleVue 4X Powermate 2" 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 is