Product Code Database
   » » Barcode: 410000032190
Tag Barcode '410000032190'.
Tag
Mark as Favorite

Tele Vue Barlow Lens, 2x, 2" (Big Barlow) with Brass Clamp Rings
 (

UPC 410000032190
REGISTERED: 07/24/18
UPDATED: 08/23/19
Tele Vue Barlow Lens, 2x, 2
Rank: 36%
Bluestar Blackstar Blackstar Blackstar Blackstar

"Tele Vue 2" Big Barlow Offered in a 2x magnification, the Big Barlow is ideal for Newtonian scope owners. It will be parfocal with both 2" and 1¼" eyepieces in this application. Features include 1¼" eyepiece adapter, threads for 48mm filters, captive lock screw and full multi-coatings. Barlows Concept: I originally designed the Tele Vue Barlow line to complement the high performance of our eyepieces. Only 2 elements of high index glass were required to reduce all aberrations to well below


Specifications
  • Tele Vue Barlow Lens, 2x, 2" (Big Barlow) with Brass Clamp Rings. available on June 02 2018 from Buy for Https://www.rakuten.com/shop/adorama-camera/product/TVBL2XN/?scid=af_feed" itemprop="offers" target="_external" title="" itemscope itemtype="http://schema.org/Offer">218.00
  • UPC bar code 410000032190 ξ1 registered June 02 2018
  • Product category is Electronic

Tele Vue 2" Big Barlow Offered in a 2x magnification, the Big Barlow is ideal for Newtonian scope owners. It will be parfocal with both 2" and 1¼" eyepieces in this application. Features include 1¼" eyepiece adapter, threads for 48mm filters, captive lock screw and full multi-coatings. Barlows Concept: I originally designed the Tele Vue Barlow line to complement the high performance of our eyepieces. Only 2 elements of high index glass were required to reduce all aberrations to well below the airy disc in an f/4 system. It has taken a good 15 years, but I think we're finally laying to rest the popular myth of the "degrading Barlow." In a 1997 Sky & Telescope review, Terrence Dickenson wrote ".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 Anyone telling you otherwise is using outdated information.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 Terry, I couldn't agree more. Al Nagler Properly designed Barlows do wonderful things: They amplify power, slow the telescope's f/# (improving eyepiece sharpness), and give designers the opportunity to compensate for eyepiece aberrations. Tele Vue Barlows use multi-coated high index glasses for optimum aberration correction, exceptional contrast with virtually no lightloss. Observed performance is aber


References
    ^ Tele Vue Barlow Lens, 2x, 2" (Big Barlow) with Brass Clamp Rings. Buy. (revised Jun 2018)

Page 1 of 1
1

Account

Social:
Pages:  ..   .. 
Items:  .. 

Navigation

General: Atom Feed Atom Feed  .. 
Help:  ..   .. 
Category:  ..   .. 
Media:  ..   .. 
Posts:  ..   ..   .. 

Statistics

Page:  .. 
Summary:  .. 
1 Tags
4/10 Page Rank
50 Page Refs
11s Time
32 Sources