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Celestron Omni 2X Barlow Lens

4.2 out of 5 stars 69 customer reviews
| 26 answered questions

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  • Celestron 2x - 1-1/4" - Omni Barlow Lens - 93326
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$42.93 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Celestron Omni 2X Barlow Lens
  • +
  • Celestron 93230 8 to 24mm 1.25 Zoom Eyepiece
  • +
  • Celestron 18778 AC Adapter (Black)
Total price: $123.37
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Technical Details


Product Description

Celestron 2x - 1-1/4 - Omni Barlow Lens - 93326

Product Information

Product Dimensions 8 x 8 x 6 inches
Item Weight 2.9 ounces
Shipping Weight 2.9 ounces (View shipping rates and policies)
ASIN B00008Y0TM
Item model number 93326
Customer Reviews
4.2 out of 5 stars 69 customer reviews

4.2 out of 5 stars
Best Sellers Rank #16 in Camera & Photo > Camera & Photo Accessories > Telescope & Microscope Accessories > Telescope Accessories > Barlow Lenses
Date first available at Amazon.com March 19, 2003

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Customer Reviews

Top Customer Reviews

Users who don't know what they are doing or talking about is really getting on my wick. It could be a review on the latest electronic device or a set of spoons! But this explains the long amble to my final remarks on the Celestron 2x Omni Barlow in this review.

Observational astronomy has been my avocation for 33 years with hundreds of dusk to dawn sessions, and thousands of hours at the eyepiece.

I am afraid that most people who purchase a Barlow lens have performance expectations that are naive, or are trying to correct the mistake of having purchased a telescope whose f/ratio is so fast as to make any high magnification observations disappointing. An f/5 telescope, for instance, is fine for observing deep sky objects in a wide field of view. An f/15 refractor is best suited for planetary, lunar and binary star observations where high magnifications and high contrast images are required.

As we move through a range of eyepieces from low to high power what does the user notice most? It is the eye relief. The eye relief of a 32 mm is long enough even to use glasses. But as we drop down to 6 mm, 5 mm, and 4 mm the eye lens becomes very small. You must move in so close as to sometimes touch the eye lens with one's eye lashes. If you wear glasses, they must be removed to get close to the eyepiece. Now any malady your eyes suffer from are uncorrected. This may introduce your chromatic aberrations, serious astigmatism, &etc, to the telescopic image.

Of course there is the telescope itself. The best instruments under good atmospheric conditions can, at best, employ 50x to 60x (power) per inch of aperture. Further magnification is called "empty magnification". Why? Because you have already reached the theoretical resolution limit of the telescope.
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I am new to astronomy so I went out on a limb and purchased this Barlow lens for my Celestron 80mm EQ Refractor. It works well. Keep in mind the lens seems to let in less light but I could see Mars, Saturn, the Orion Nebula and several star clusters with good clarity. I only have 10mm and 25mm eyepieces and this doubles my set. I live in an area with terrible conditions for backyard astronomy but this piece has brought out a few more objects. Next I'll try some Celstron Omni eyepieces.
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Very nice 2x Barlow, very sharp and a definite improvement over the cheaper 3x Barlow that comes with the Celestron 127 EQ and 114 EQ telescopes. No noticeable chromatic aberration compared with the cheaper Barlows. On the Celestron Powerseeker 114EQ (no. 21045, fantastic optics btw, for the price) I use it combined with a Celestron 9mm Omni eyepice to give me a sharp 4.5mm equivalent magnification. With the $33 Celestron single axis RA motor drive installed and humming along I can see the two main bands on Jupiter very clearly, and two additional fainter bands. Five stars for the quality of the optics. Very much worth the $42 (on Amazon) investment.

Edit: To see how well it works, see the pictures I posted below (taken with a modified logitech c310 usb webcam) ...
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I picked up a Celestron 21024 3" tabletop reflector, hoping to get my feet wet in backyard astronomy. The scope actually turned out quite nice, but with its short focal length, the effective magnifications even with a 4mm eyepiece were pretty low. I tried some other barlow eyepieces, none of them would even focus.
The Celestron Omni barlow worked great on that telescope, and I was actually able to make out the bands on jupiter using the barlow, a 12.5mm plossl, and the celestron 21024. I was pretty surprised. If you have the celestron 21024, you'll want this barlow.
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I just purchased an Orion 8 inch telescope--without the barlow Saturn's rings are nearly invisable when I use just the eyepiece that came with the scope. When the barlow is attached Saturn becomes amazing! I love this product and am considering purchasing a 4x to see what the difference is--I recommend this lens highly. If you are into astonomy-this is a must buy![[ASIN:B00008Y0TM Celestron Omni 2X Barlow Lens.
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I've been an amateur astronomer for over 25 years. This is a great barlow and the first time I've used one. My wife and I used this in our 6" f5 Celestron Reflector (f/l 750mm). It provided great views with a 26mm lens inserted into the barrel of the Ring Nebula (M57), Andromeda Galaxy (M31), and several other deep sky objects. Even the moon looked great! With the 5mm lens, which was probably overkill, made us feel as if we were right on the moon itself. Of course, when jacking up the magnification this high the image quality isn't as great or as sharp (this is normal when using higher power). For the price, this is an awesome item! Can't wait to get the 3x version.
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This Celestron Omni 2X Barlow Lens is amazing for the money! Crystal clear optics and instantly doubles the power of any telescope eyepiece.
20mm eyepiece becomes a 10mm eyepiece (i.e. if using a 1000mm aperture telescope, the 20mm eyepiece gives 50X power. Use the Celestron Omni 2X Barlow Lens, and it translates your eyepiece to a 10mm and also 100X power!).

The "hidden bonus" that I mentioned in the title? Look closely at the image of the Celestron Omni... See the bottom of it? That's where the main Barlow Lens is. You can unscrew it, remove it, and screw it into the bottom of ANY 1.25" telescope eyepiece! So, not only do you have a main 2X Barlow Lens, but you get the additional " hidden bonus" of a 1.5X booster lens as well!

Plain: 20mm eyepiece w/ 1000mm aperture scope: 50X power.
2X Barlow: 20mm (now 10mm) w/ 1000mm aperture scope: 100X power.
1.5X lens from Barlow: 20mm (now 13.3mm) w/ 1000mm aperture scope: 75.18X power.
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