SKU: 84916817193

TS-Optics 2" 2.5x APO 4-element Barlow Lens

Sale price$150.30 Regular price$167.00
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Ships within 48 hours · Estimated delivery Sep 12 - Sep 17

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Description

TS-Optics 2" 2.5x APO 4-element Barlow LensAt a glance The TSB225 extends the focal length of the telescope by the factor 2. 5 and offers a very good illumination for 2" eyepieces and also for astrophotography. Focal length increase 2. 5x thus the magnification is significantly increased. High quality 4 element APO design for very good sharpness on axis and in the field for sharp observation and astrophotography. Blackened lens edges against reflections and for more contrast Telecentric optics

At a glance

The TSB225 extends the focal length of the telescope by the factor 2.5 and offers a very good illumination for 2" eyepieces and also for astrophotography.

♦ Focal length increase 2.5x - thus the magnification is significantly increased.

♦ High-quality 4-element APO design for very good sharpness on axis and in the field for sharp observation and astrophotography.

♦ Blackened lens edges against reflections and for more contrast

♦ Telecentric optics with resulting benefits (see details)

♦ At the same time, the Barlow lens is a photographic 2.5x converter for photography through telescopes with 2" focusers. Even full-frame sensors are illuminated.

♦ At the telescope side, the 2" Barlow has a thread for 2" filters like nebula filters for increasing contrast.

♦ The clamping of 2" and 1.25" accessories is done by compression rings. The 1.25" adapter is included.

Description

TS Optics 2 "- 2.5x APO-Barlow

The TS Barlow increases the magnification of your 2 "or 1.25" eyepiece by a factor of 2.5. The premium 4-element optics are completely multi-coated for optimum image brightness, high contrast and color-true reproduction. The 4-element design also allows use on very high-speed telescopes, such as on f / 4 Newton's.

The Barlow lens is high quality processed. The four lenses are stored in a solid aluminum housing. Inside, the Barlow is blackened as best as possible, so that even in lunar and solar photography (with sun filter) no reflexes.

The clamping of the 1.25 "and 2" accessories is done by a ring clamp. The fixation takes place gently and precisely on the optical axis.

On the telescope side, the Barlow lens offers a 2 "filter thread, where you can screw in all commercially available 2" filters.

Photography: This Barlow lens is also a high-quality photographic converter that extends the telescope focal length by a factor of 2.5. The 4-element design ensures a very high sharpness on the axis and especially in the field. This is an important advantage over simple 2-element barlow lenses. Even with full-frame cameras, you'll be able to achieve sharpness right up to the edge.

Specifications

Capacity

Magnification factor 2,5
Connection (to the telescope)  2" 

General

Type Barlow & Erecting 
Type of build Barlow Lens
Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 84916817193

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Josh
Chelsea, US
★★★★★ 5
Pen holder feature isn't good
Color: Cocoa
Edited review: previously I gave this a two-star review because when I inserted the pen into the pen holder the wallet couldn't close anymore... I tried taking it out putting it back in a few times and it seemed obvious to me that something was wrong and I just could not figure out why the wallet possibly was having an issue closing even though it's designed to hold a pen... To me it seemed obvious that when inserting the pen you should have the clip on the inside where are the bills go.... That single millimeter of space that that clip takes up in the bill fold causes the wallet to not be able to close properly so it springs open. Needless to say that felt extremely cheap for a product of this price and I was very unhappy and considering a return and after writing a bad review I happen to see product pictures with the clip on the inside of the wallet where your cards go and it dawned on me that I had just simply put the pen in in the wrong orientation. That completely solves the issue. So updated back to five stars, and the wallet is great. 2n update after using it for a week on an international trip so I was carrying my passport. Worked great - made me feel safe to always have my passport and room for all my most important documents inside a -just- large enough for a passport wallet. I really don't think they could have saved another millimeter and still made such a quality wallet. Having a micro pen in there is icing on the cake - makes you feel like James bond. I also felt safer having a hidden bill compartment so your not showing a fat stack of foreign currency (I mean depends on your use case but I was in some rather poor areas and this added some peace of mind and 'security' in my opinion). You can just keep some small bills up front and your real stack on the hidden flap. I won't dock a star for it - but keeping this on a back pocket so you're sitting on it because it's bigger and the way it holds cards after just one week there's already card imprints on the leather (just imagine your older leather wallets where the cards start wearing through the leather) Also I tested the RFD blocking and it indeed works. I'm unable to scan any cards through the wallet and that was an important feature to me. Even when the wallet is open and I ran scanners directly over cards (in the sleeves) it still didn't pick anything up.
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Reviewed in the United States on February 1, 2026
J
Verified Purchase
Jeremy N.
Louisville, US
★★★★★ 5
Works
Color: Cocoa
Good wallet that can fit a passport, hold cash, and cards. “Hidden” pockets too, but that just means more storage space to me. Soft and supple leather that gets better when conditioned and cared for properly. Main feature I like is the RFID blocking, I only get wallets that have it. Expensive- yes. Works, also yes.
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Reviewed in the United States on October 23, 2024
A
Verified Purchase
Amazon Customer
Omaha, US
★★★★★ 3
Really bad amazon customer service
Color: Black
The wallet seems great but the box it came in wasn't sealed. It was supposed to arrive by the 22nd and it arrived 4 days later. I needed it for a trip on the 1st. When I took it out, the wallet had two scratches at the back and the pen was also scratched. I contacted customer service and they couldn't help me in any way to get the replacement item before my departure date. I kept it anyways because of thr necessity. Gave it 3 stars because of the good quality of the wallet
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Reviewed in the United States on September 27, 2023
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Amazon Customer
Whiting, US
★★★★★ 5
Great Shoes
Size: 10, Color: Cognac
Love these shoes super comfortable and look great. Everyone asks me where I got them.
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Reviewed in the United States on May 20, 2026
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Amazon Customer
Omaha, US
★★★★★ 5
Beautiful shoe but too narrow
Size: 10 Wide, Color: Navy Grainy Leather
Too narrow
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Reviewed in the United States on May 24, 2026

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