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Chrome 2 inch barrel with black anodised body and captive lock screws

Tele Vue

Tele Vue 4x Powermate 2 inch Image Amplifier PMT-4201

SKU CH-APDY-6JV9W

A 4x telecentric image amplifier that preserves eye relief and minimises vignetting for visual and imaging use

  • Telecentric design keeps filter rays parallel for Hydrogen-alpha imaging
  • Four-element optical system reduces vignetting and edge aberrations with long focal-length eyepieces
  • Parfocal construction maintains focus across visual and imaging configurations
  • Multi-coated optics deliver high-performance planetary imaging at 4x magnification
  • Safety undercut barrel and captive lock screws prevent accidental drops

What it is and who it's for

The Tele Vue 4x Powermate is a 2 inch image amplifier that multiplies eyepiece power by four while preserving the original eye relief. It suits visual observers and planetary imagers who want higher magnification without adding a separate Barlow and interface lens.

Deciding specification

The optical system uses a four element design with a negative achromatic doublet and a positive pupil correcting doublet to deliver telecentric performance. This keeps field rays parallel to the optical axis and makes the unit ideal for Hydrogen alpha filters such as Daystar models.

Thermals noise and power

The amplifier is a passive optical component with no moving parts, no electronics and no power requirement. It adds no heat, vibration or audible noise to the imaging train and maintains full multi coating transmission in normal use.

Highlights

  • Telecentric design keeps filter rays parallel for Hydrogen-alpha imaging
  • Four-element optical system reduces vignetting and edge aberrations with long focal-length eyepieces
  • Parfocal construction maintains focus across visual and imaging configurations
  • Multi-coated optics deliver high-performance planetary imaging at 4x magnification
  • Safety undercut barrel and captive lock screws prevent accidental drops

Specifications

No published specifications for this item yet.

Questions about this item

What does the 4x magnification mean when I use it with my 22mm eyepiece?

A 22mm eyepiece becomes the equivalent of a 5.5mm eyepiece, giving four times the power while keeping the original eye relief.

How does the telecentric design affect the light path compared with a standard Barlow?

Field rays exit parallel to the optical axis instead of diverging, which is ideal for Hydrogen-alpha filters such as Daystar models.

What barrel size and safety features does the 2 inch unit have for my star diagonal?

It has a 2 inch chrome barrel with a safety undercut and captive lock screws that cannot fall out.

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