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Celestron 93436 2 Inch Luminous 2.5X Barlow Lens, Silver

  • Based on 295 reviews
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Availability: In Stock.
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Arrives Wednesday, Jun 17
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Features

  • The Celestron 2.5x Luminos Barlow increases the magnification of any 2" or 1.25" eyepiece by two and a half times.
  • High-quality 4-element optics produce a flat field for sharp images that are free of extraneous color.
  • Hard-anodized aluminum barrel is threaded to accept 2" filters.
  • A brass compression ring holds eyepieces firmly in place, and large thumbscrews are easy to turn, even with gloves on.
  • A 2" to 1.25" adapter is included. Allows the use of both 2" and 1.25" eyepieces.
  • UNBEATABLE WARRANTY & SUPPORT: Buy with confidence from Celestron, a leading telescope brand in California since 1960. Your purchase includes a 2-Year US Warranty and unlimited support from our team of US-based experts.

Description

The Celestron 2" Luminos Barlow Lens increases the magnification of your 2" and 1.25" eyepieces by 2.5x. The premium 4-element apochromatic optics are fully multi-coated for optimum light transmission and yield high contrast, true color images. The beautiful hard-anodized aluminum housing matches the eyepieces in the Celestron Luminos line. A centralized rubber grip helps to keep your hands securely on the barrel, even when your fingers are cold or you are wearing gloves. A brass compression ring just inside the top of the Luminos 2.5x Barlow grabs your 2" eyepieces gently but firmly when you turn the oversized thumbscrew. Once the thumbscrew has been secured in place, the brass ring keeps your eyepiece in the Barlow instead of relying on the tip of the thumbscrew itself, offering a better grip and protecting the barrel from scratches. A matching 2" to 1.25" adapter is included so that you can increase the magnification of all of your eyepieces, both 1.25" and 2", in this versatile Barlow lens. The insert barrel of the Celestron Luminos 2.5x Barlow is threaded to accept 2" filters. This is a nice feature, because you can change eyepieces without removing and reattaching the filter each time.

Brand: Celestron


Model Name: 93436


Eye Piece Lens Description: Barlow


Objective Lens Diameter: 50.8 Millimeters


Telescope Mount Description: Manual assembly


Focus Type: Fixed Focus


Item Weight: 12.32 ounces


Compatible Devices: 2" Eyepieces, 1.25" Eyepieces


Lens Coating Description: Fully multi-coated


Focal Length Description: 2.5x


Eye Piece Lens Description: Barlow


Mount: Manual assembly


Focus Type: Fixed Focus


Compatible Devices: 2" Eyepieces, 1.25" Eyepieces


Coating: Fully multi-coated


Focal Length Description: 2.5x


Field Of View: 82 Degrees


Zoom Ratio: 2.5


Additional Features: 4-element apochromatic optics, secure grip, and included adapter


Objective Lens Diameter: 50.8 Millimeters


Item Weight: 12.32 ounces


Brand: Celestron


Model Name: 93436


Age Range Description: adult


Global Trade Identification Number: 67


Manufacturer: Celestron


UPC: 050234934367


Manufacturer Part Number: 93436-CGL


Model Number: 93436-CGL


Warranty Description: ELESTRON TWO YEAR LIMITED WARRANTY


Built-In Media: uminous 2-Inch 2.5x Barlow Lens


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jun 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Absolutely outstanding workmanship, especially for the price!
An important rule to remember: When it comes to adding anything to your optical path in astronomy, don't shop "on the cheap". You will be sorely disappointed with the results. If you can afford a Televue, do it. If not, the Celestron Luminos is the best bang you can get for your buck. 4 elements. This thing is not only gorgeous for visual observation, but it's outstanding for astrophotography. Strongly recommended. ... show more
Reviewed in the United States on July 26, 2022 by David H. Holton

  • Great purchase
Solid, not too heavy. And could get focus on a nextstar slt 130 with astro camera without issue. Have to be careful though, looking at Jupiter with this and an eyepeice was quite bright, needed to use a filter. However I so suffer from light sensitivity, so probably not an issue for others
Reviewed in the United States on December 23, 2025 by Patrick

  • Premium Barlow eyepiece
Very nicely made and solidly built - this thing is a beast
Reviewed in the United States on May 22, 2026 by Sci_fi_fanatic

  • Perfect.
Truly what I wanted. Have an 8 inch Dobsonian and a 28mm deep view lens, great light capture but always wished I could get in closers with a 2 inch eyepiece. The 1.25 isn't as enjoyable for me.. of course I was worried about losing light and increasing distortion as those of you reading this are too I'm sure... let me put you at ease, this is amazing. Truly amazing. Turned it on onions belt and got perfect views of the nebs on the sword. Great close ups of jupiter, perfect clarity, perfect flattening across the lens with no awkward edge distortion. I was really happy with tonight's stargazing and this has definitely been the purchase I hoped it would be. If your on the fence, buy it. If your not even in the market for thos.. buy it. Just buy it. You won't be dissapointed. ... show more
Reviewed in the United States on March 27, 2016 by Michell Young

  • Good build quality. Not heavy. Good optics.
I bought the celestron 2.5x barlow to do some planetary work. I looked over a number of reviews and have to disagree with them on several points. Weight - the barlow is not heavy. weight is similar to a typical eyepiece if not lighter. Build quality - quality is quite acceptable. I would call it good. Exterior - is polished, metal with a rubber friction ring for grip and handling. I prefer a dark exterior but that is just my preference. Style - fits in with the other Celestron Luminos equipment. I would rather a simpler style but this is what is available. Optically - acceptable, clear images, not distorted. The telescope, eyepiece and equipment you use with this will certainly factor in to the optical performance. I am using a high quality triplet refractor with good 2" eyepieces. There are better barlow lenses out there but at a higher price point. So in summary, At this price (i got a discount) i consider it a very good buy, and certainly acceptable for my uses. ... show more
Reviewed in the United States on February 1, 2023 by WeegieB

  • Nice Barlow no regrets in buying it. Nice Barlow no regrets in buying it.
Great quality for the price. Low profile with no issues in bringing all my eyepieces into focus. No noticeable reduction in image sharpness and brightness when Barlow used. Very satisfied.
Reviewed in the United States on July 3, 2021 Reviewed in the United States on July 3, 2021 by Ysng101

  • Looking through the lens in
Well I’m not enjoying it so far because the moon is to big in that lens and I have yet to view Saturn or Jupiter, can’t seem to find them.
Reviewed in the United States on November 4, 2025 by Kerrie Fortman

  • Great product and great seller.
Product arrived a day in advance!!!! High quality build . I would use it tonight, but we have cloudy skies. This 2" BARLOW will help me with my telescope eye fatigue.
Reviewed in the United States on August 13, 2023 by William Borges IV

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