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The Alstar High Power 5x 4 Element Barlow Lens quintuples the power of any 1.25 inch telescope eyepiece
The 1.25 barrel is internally threaded for use with Alstar 1.25 inch eyepiece and imaging filters; The inside of the barrel of the 5x High Power Barlow is also glare threaded to help prevent internal reflections
The lenses are also edge blackened to further maximize contrast and sharpness
Featuring a 4 element lens design; The Alstar High Power 5x Barlow will render exquisite images without introducing additional chromatic abberation while providing a monstrous 5x power boost
The Barlow lens elements are fully multicoated with antireflection coatings to ensure maximum light throughput for bright; crisp views
Glen Davis
Reviewed in the United States on January 3, 2025
Don’t work at all. Using anything from a 10mm-40mm we have clear sight. Install this with any rey piece and it goes black. Can’t see anything no matter what you do. Works good as a monocular. That’s about it. Don’t waste your money.
Customer
Reviewed in the United States on May 21, 2021
You need Barlows this good. This really improves the image quality, colors look more natural. You lose a bit of light, but you gain much more. Glad I bought this. The single element Barlows are junk in comparison. You need this if you are trying to get the most out of your telescope.
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