Tele Vue 5X Powermate - 1.25" - PMT-5126 Eyepiece Accessories especially if you plan to

especially if you plan to use the Explore Scientific Focal Extender for imaging and astro-photography

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'''s philosophy of "showing no field unless it'''s fine" stresses full field image quality as the ingredient for impressive views through the TeleVue 16mm Nagler Type 5 Eyepiece

The Tele Vue 3mm-6mm Nagler Zoom is small

Tele Vue 5X Powermate - 1.25" - PMT-5126 Eyepiece Accessories especially if you plan toAbout 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