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Altair-EX 2x ED Barlow Lens 2" barrel

Altair-EX 2x ED Barlow Lens 2'' barrel
Price:  £49.99(Inc. 20% VAT)Earn 49 Loyalty Points

Model:  AEX-ED2B
Brand:  Altair
Barlow Strength:  x2



Generally In Stock, Please Confirm Before Ordering

2 Year Warranty On All New Items

The Altair Astro Altair-EX 2x ED Barlow Lens contains ED optics for better colour correction compared to a conventional Barlow lens, producing maximum image contrast.

Altair Barlows are much higher quality than cheap packaged Barlows where manufacturers are usually forced to squeeze in as many accessories as possible under a particular price point.

This Barlow lens is a highly recommended accessory for webcam imaging of planets with an IR-Blocking filter (also known as an IR-Cut filter), or for visual obsering of the planets with your 1.25" and 2" eyepieces. If you have a small portable refractor with a short focal length, this is the ideal accessory for lunar and planetary viewing and it's pretty much a standard item in most telescope packages.

Barlow lenses are designed to increase the magnification of your existing telescope eyepieces when you place the Barlow between the eyepiece and telescope. This can effectively "double" the size of your eyepiece collection by adding a single accessory. For example a 20mm eyepiece becomes a 10mm one with the Barlow, and a 15mm eyepiece becomes a 7.5mm one. If you have both a 20mm and a 15mm eyepiece, you've effectively doubled your eyepiece collection already!

The Altair-EX ED Barlow has a 2" barrel which is threaded for 2" standard astronomy filters, and it has an internal blackened thread to stop stray light reflection to increase image contrast.

ED optics bring the coloured wavelengths of light to a common focus which gives better performance than non-ED optics, and this also improves image contrast.

All optics are multi-coated, and as you can see from the photograph, reflections are almost invisible on the glass surface (we used a flash too). The lower lens cell portion of the Barlow can be removed and threaded into a variety of M48 filter thread adapters.

A precision machined "low profile" 1.25 to 2" eyepiece adapter with brass compression ring is also included, which will not mar your eyepiece barrels.

The Altair-EX ED Barlow comes with a durable hard presentation box with a protective foam insert, and two plastic end caps.

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Some items that are showing as in stock are in stock at our holding warehouses, not at the shop. To double check the stock levels at the shop, please contact us on 01909774369 or

The delivery times for most items is 1 - 2 days but again, please double check stock levels on important orders before placing an order via the website.

The delivery costs for courier next day are for mainland UK only. If you live in the Scottish Highlands/Islands, Channel Islands or Northern Ireland, then a shipping surchage will apply. please contact us for prices. Smaller items can still go 1st class via Royal Mail.

Please note that if you are wanting to take advantage of our Saturday and Sunday timed services or next day pre 12 or pre 10:30 services, you MUST check that the stock is here at the shop before placing orders. Also, orders using the Saturday and Sunday services must be placed before 2pm the previous working day. Also, please remember to check that the stock is here at the shop before placing orders. If the stock is not at the shop, we won't be able to ship on any of the timed services. 

Please note International customers will need to contact us for a shipping price prior to ordering via the website. This all depends on the size and weight of the items. Please get in touch with us for any postage costs. Please note we do NOT ship telescopes or heavy items outside of the UK. This is due to massive postage costs and problems regarding returns.

If you have any questions regarding stock levels or delivery, please get in touch.

Rother Valley Optics now have a loyalty point scheme active on the website. As you can see from the products, every item has a point value. Each pound you spend with us, you will receive 1 loyalty point. 1 point is worth 1p. You can accumulate these points as you shop with us, then when you are over £5, you can spend them on the website! Easy as that.

Even if you collect most of your items from our shop, you can still order via the website and select the "shop collection" delivery option. Then you can come to our shop, collect your item and still get your points!

Please note this scheme is online only. Customers who order via the telephone can still be added to the scheme manually. Please ask for more details on this. Before placing orders online, please make sure you are registered with us first otherwise your points won't be allocated.

So happy shopping and if you have any questions about the scheme or any other queries, please get in touch.

Rother Valley Optics


Finance is now available on most products above £250! We offer 12, 24, 36 and 48 months with a fixed 15.9% typical APR. Please note this can't be done through the website at this moment in time. You will need to email us or drop into the shop to sort out finance. As long as the item is above £250, finance is generally available!

Please note some items are NOT eligible for finance. Please contact us for eligibility first. 

Please get in touch with us today to find out if you're applicable.

You must be over 18 years to apply, live in the UK, have a valid UK bank account and not be bankrupt. Your credit file will be searched on application to see if you are eligible.

Rother Valley Optics Ltd is registered in England and Wales 04762707. Registered Office: 21 Station Road, Kiveton Park, Rotherham, S26 6QP. Rother Valley Optics Ltd acts as a credit broker only. Rother Valley Optics Ltd are authorised and regulated by the Financial Conducts Authority. Credit provided subject to age and status..

If you have any questions about this, simply give us a ring or drop into the shop for a chat.

- - - Rother Valley Optics Ltd

01909 774 369