TeleVue  Barlow Lens 4x Powermate 2" 

Product description

Al Nagler's 4-element concept, continues the tradition of full-field sharpness with optimum aberration control. Like long eye-relief? Retain the eye-relief of long focal length eyepieces, while at high power. Enjoy, for example, the sharpness and comfort of the 32mm Plössl at up to 5 times the power!

The Powermate consists of a negative doublet plus a positive "pupil-correcting" doublet. This 4-element system provides the magnifying function of a Barlow without its limitations by restoring the field rays back to their original direction, as if the Powermate were not there. The result is a pure magnification increase.

The advantages in a nutshell:


    PowerMate with a combination of four lenses
    no vignetting when observing
    extremely good image
    good edge definition in almost all optical systems
    optimal when used together with an H-alpha telescopes due to parallel optical path
    very robust housing with 2" barrel and 1.25" reducer with compression ring clamp
    2" filter thread

    the 2" PowerMate can be separated and an (optional) T-ring can be attached for photography

Specifications
Capacity
Magnification factor
4
Connection (to the telescope)
2"
Coating of optical system
multiple
Number of lenses
4
Ring clamp
yes
General
Material
Aluminium
Weight (g)
545
Series
Powermate


Product safety
Manufacturer: Tele Vue Optics, Inc., 32 Elkay Dr., NY 10918 Chester, US, www.televue.com
Responsible person: NIMAX GmbH, Otto-Lilienthal-Str. 9, 86899 Landsberg am Lech, DE, info@nimax.de