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TELEVUE POWERMATE, 1.25", 2.5X

TELEVUE POWERMATE, 1.25", 2.5X
See Extended Information for Full Description


 
ALL TELEVUE PRODUCTS NOT SEEN ARE AVAILABLE BY CALLING
List Price: $283.00
Our Price: $218.00
Savings: $65.00
Focal Length n/a
Eye Relief: n/a
Diameter: 1.25"
Apparent Field n/a
Product Weight: 205G

Quantity in Stock:(Product not currently in stock. Pre- or Back-orders accepted.)
Availability:: Back Order
Product Code: 4200020
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Description Technical Specs Extended Information
 
This 4-element design is as close to invisible in the optical path as any magnifying amplifier.  Eye relief, vignetting, sharpness, clarity, and even focal position are unaffected.
Features
  • Unique Benefits and Applications for Powermates™
  • Vignetting, edge field aberrations and pupil movement - all introduced when using Barlows with long focal length eyepieces, are minimized.
  • Telecentric operation (field rays leave parallel to optical axis, unlike Barlow lenses which diverge rays). This is ideal for Hydrogen-alpha filter use such as with Daystar models.
  • High performance for image amplification, CCD or film (some of the finest Earth-based planetary imaging is being done with Powermates™ — see below).
  • Flexible for visual and imaging with all types of telescopes and eyepieces. Essentially Parfocal, and with nearly constant magnification regardless of image distance behind top surface (except 5x model which increases 1x for every 35mm of image distance increase).
  • Higher magnifications are possible with high optical performance compared to "doubling up" Barlows.
  • All will reach parfocal point in star diagonals, except for the 2", 2x which comes very close.

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 1 Write a review »

  0 of 0 people found the following review helpful:
 
5 of 5 March 9, 2019
Reviewer: Paresh from TX, USA  


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