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TeleVue 5x 1.25" Powermate

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1 customer reviews

List Price: $218.00
You save: 10.09%

Price: $196.00


  • Manufacturer: TeleVue
  • MPN: PMT-5126
  • SKU: PMT-5126
  • Availability: In-Stock - Ships from Warehouse

TeleVue 5x Powermate T-Ring Ready.
  

I thought you might be interested in the development of this project:
  

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, July 1997, says: "Technology has erased the old objections. A modern Barlow will not degrade your telescope`s optics. Anyone telling you otherwise is using outdated information. Moreover, the highly regarded Nagler eyepieces and their clones have built-in Barlows, ample evidence that the lens is not some detrimental intruder." Thanks, Terence, for laying the myth of the degrading Barlow to rest.
  

Barlows do more than just increase magnification; they also retain eye relief (or in the case of long focal length eyepieces, actually INCREASE eye relief). A high quality Barlow must be properly designed and manufactured in order to avoid compromising a telescope`s color correction and spherical aberration correction. The "invisibility" of Tele Vue`s 2-element Barlows have been noted in test reports in the astronomy magazines.






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Most Helpful Customer Reviews

Fantastic!

By J.D. Metzger on October, 16th 2009

As long as the Powermates have been around, and as popular as they are, Im surprised there arent more reviews listed here. This is a great product! Everything that Tele Vue claims about the Powermates is true - optically, they are truly invisible.

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