Product Description Barlow lenses offer an easy, economical way to increase the magnification range of your eyepieces, and Celestron carries an assortment of these highly useful lenses. A Barlow lens doubles the magnifying power of your eyepiece by doubling its effective focal length. For example, an 18mm eyepiece used with a 2x Barlow lens would have the magnifying power of a 9mm eyepiece. It's like having two eyepieces in one!If you're looking for an affordable way to achieve high-power viewing of the moon and planets, double stars and even close-up views of terrestrial subjects, a Barlow lens is the answer.Barlow lenses mount into either your telescope's focuser or visual back.The .96" Economy model is a good choice when you want to expand your power ranges at a very economical price. Celestron's premium quality 1" achromatic Barlow lenses (#93507) are compact and lightweight. It is under three inches long, weighing in at 4 ounces.The Ultima Series Barlow (2x - 1") is an air-spaced, three element apochromatic design with a 27mm clear aperture. This lens features a very high quality, fully multicoated design. Amazingly compact and lightweight, it's just 5 ounces and 2.75" in length.
Customer Reviews:
celestron ultima 2X barlowAugust 29, 2005 8 out of 10 found this review helpful
The application for this barlow on my 8i/GPS SCT/XLT was to gain higher magnification options from longer focal length and eye relief eyepieces (ELux and Xcel 25-18-15mm)and stay in modest price ranges for everything. COMMON TESTS with the barlow vs. short focal length eyepieces to 8mm was most favorable: a) using both common and wide angle FOV eyepieces and b)testing with and without eye glasses while c) viewing Polaris double, Jupiter & moons and the Moon. Seeing conditions were poor (Dallas, summer, early evening sky with a lot of Moonlight.) Never the less I am pleased with both the Celestron Ultima 2X barlow and the strategy and therefore I "recommended". Shipping was prompt - much better than prior experiences with amazon.com - improvement so noted.
Inexpensive but great addition for your viewing pleasureJanuary 18, 2005 14 out of 14 found this review helpful
This particular Barlow, along with the Orion Shorty, is highly recommended on several of the astronomy forums on the internet. I got this one instead of the Orion simply because Amazon was offering it at about $52 at the time.
I've found that I enjoy using the Barlow when viewing planets and a few DSO's. It provides an economical way to virtually increase the number of eyepieces in your collection. It does introduce a little light loss with my eyepieces (maybe this is normal with all eyepieces), but it is not troublesome.
I certainly recommend this Barlow for those of you who want to cheaply expand your eyepiece collection.
Select Language
Copyright 2007 www.onlinedigitalshop.info All Right Reserved
