Celestron 93326 Omni Barlow Lens, Silver, 2 x 1.25 Inch
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AI Verdict
A 2x magnification Barlow lens with fully multi-coated optics for 1.25-inch eyepieces, designed to double magnification and increase eye relief.
This Barlow lens is a strong fit for amateur astronomers, especially those just starting out, due to its ability to double eyepiece magnification and increase eye relief. Its 1.25-inch compatibility makes it a universal accessory for many telescopes. The unscrewing feature adds versatility for different magnification needs.
If you need more precise magnification or superior optical performance, look for Barlows with telecentric designs or higher-end multi-element constructions.
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Pros
- Doubles the magnification of any 1.25-inch eyepiece.
- Fully multi-coated optics ensure maximum light transmission and minimal reflections.
- Increases eye relief, which is beneficial for users wearing glasses.
- The lens element can be unscrewed and attached directly to an eyepiece for approximately 1.5x magnification.
- Constructed with a metallic body for durability.
- Blackened lens edges reduce internal reflections.
Cons
- Does not include filter threads on the unscrewed lens element.
- May exhibit a magnification factor slightly above 2x when used with a camera due to sensor placement.
- Optical performance does not match higher-priced Barlows like Tele Vue or Explore Scientific.
Dimension Scores
Features fully multi-coated optics and blackened lens edges for clear views, with users reporting no significant loss of brightness or color.
This is a passive optical accessory and does not have autofocus capabilities.
While it can be used with cameras for astrophotography, its magnification factor can vary slightly, and it lacks T-threads for direct camera attachment without adapters.
Weighing 2.82 ounces, it is a lightweight accessory that adds minimal bulk to a telescope kit.
Best For
- Beginner astronomers looking to expand magnification options without buying more eyepieces.
- Observing the Moon and planets with increased detail.
- Users who need increased eye relief for comfortable viewing with glasses.
- Budget-conscious buyers seeking an upgrade from basic telescope accessories.
Not Recommended For
- Astrophotographers requiring precise 2x magnification with a camera, as it may vary slightly.
- Users expecting the optical clarity and performance of premium Barlow lenses.
Watch Out For
- The unscrewed lens element lacks female threading for filters, preventing direct filter attachment in that configuration.
- When used with a camera, the actual magnification can be closer to 2.25x or higher, depending on the camera's sensor depth.
- While it doubles magnification, it does not magically turn a low-power eyepiece into a high-power one without potential image quality trade-offs compared to a dedicated eyepiece.
Full Specifications
| ASIN | B00008Y0TM |
| Brand | Celestron |
| Language | English |
| Focus Type | Manual Focus |
| Finderscope | Reflex |
| Item Weight | 2.82 ounces |
| Manufacturer | Celestron |
| Item model number | 93326-CGL |
| Compatible Devices | 1.25 inch eyepieces |
| Product Dimensions | 8 x 8 x 6 inches |
| Objective Lens Diameter | 50 Millimeters |
| Lens Coating Description | Fully Multi-Coated |
| Eye Piece Lens Description | Barlow |
| Telescope Mount Description | Equatorial Mount |
| Is Discontinued By Manufacturer | No |
What Buyers Say
Many users highlight the unexpected versatility of this Barlow, specifically the ability to unscrew the lens element and attach it directly to an eyepiece for a different magnification, often around 1.5x. This feature, combined with its ability to double magnification and improve eye relief, makes it a frequently recommended accessory for beginners. While it's not a premium optic, it consistently delivers clear views without noticeable degradation for its price point.
“Dude, this thing is actually pretty sweet for the money, I can finally see Saturn way better and the unscrew trick is kinda genius for when I don't need full 2x.”
Common Praise
- Doubles eyepiece magnification effectively.
- Increases eye relief, making viewing more comfortable.
- Lens element can be unscrewed for alternative magnification.
- Images retain brightness and color with minimal distortion.
- Metallic construction feels durable.
- Blackened lens edges reduce internal reflections.
Common Complaints
- The unscrewed lens element doesn't have filter threads.
- Magnification can be slightly more than 2x when used with a camera.
- Not comparable to higher-end, more expensive Barlows in optical performance.
Ownership Tips
- The unscrewing feature is a real game-changer, giving you more magnification options than just 2x.
- It's a noticeable upgrade from the cheap plastic Barlows that sometimes come with beginner telescopes.
- You'll appreciate the increased eye relief, especially during longer viewing sessions.
- While it works, don't expect it to perform like a Barlow that costs five times as much.
Frequently Asked Questions
What is the magnification factor of this Barlow lens?
This Barlow lens doubles the magnification of any 1.25-inch eyepiece it is used with.
Can I use this Barlow lens with any telescope?
Yes, it is designed to be compatible with any telescope that accepts standard 1.25-inch eyepieces and focusers.
Does this Barlow lens affect eye relief?
Yes, it effectively doubles the eye relief of your eyepieces, making viewing more comfortable, especially for those who wear glasses.
Can the lens element be removed?
Yes, the lens cell can be unscrewed from the barrel and attached directly to an eyepiece for a slightly lower magnification, around 1.5x.
Is the image quality affected by using this Barlow lens?
Users report that images do not lose brightness or color, and the fully multi-coated optics help maintain clarity and contrast.
Buying Guide
When you're looking at Barlow lenses, you're essentially buying a magnification multiplier for your existing eyepieces. It sits between your telescope and your eyepiece, making your current eyepieces act like they have shorter focal lengths, which means higher magnification. This saves you from buying a whole new set of high-power eyepieces. The key is how well it maintains image quality while boosting that power.
Magnification Factor (e.g., 2x)
This number tells you how much the Barlow will multiply your eyepiece's power. A 2x Barlow makes a 20mm eyepiece perform like a 10mm eyepiece, effectively doubling your magnification. It's like having two eyepieces for the price of one.
Fully Multi-Coated Optics
This means multiple layers of anti-reflective coatings are applied to all lens surfaces. Think of it like a really good pair of sunglasses – it lets more light through to your eye, making your views brighter and clearer, with less distracting glare.
1.25-inch Barrel Design
This refers to the diameter of the part that slides into your telescope's focuser. Most entry-level and many intermediate telescopes use 1.25-inch accessories, so this ensures compatibility. It's like making sure a plug fits into an outlet.
Alternatives
If this doesn't fit your needs, look for Barlows with telecentric designs for consistent magnification, or consider dedicated higher-power eyepieces for specific magnifications.
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