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Altair 2 Inch SCT Quartz Dielectric Diagonal

Altair 2 Inch SCT Quartz Dielectric Diagonal

This high quality diagonal is designed to work with virtually any telescopes with an SCT thread such as the Celestron Evolution, CPC and all SCT's from 6" to 14" as well as Meade LS, LX90 and LX200 ranges. This diagonal will then allow the use of 2" wide angle eyepieces for increased fields of view in addition to the benefits of far higher light transmission over standard diagonals. The high quality Quartz mirror is superior to ordinary substrates and is thermally more stable.

The multi-layer dielectric coatings are so incredibly reflective, it's difficult to see the actual mirror surface when looking into a newly purchased diagonal. Dielectric coatings are more durable than aluminium ones because they do not oxidise, and are extremely scratch resistant, therefore easier to clean.

Designed with an internal blackened thread to stop stray light reflection, increasing image contrast. 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 low profile adapter has a corresponding slot machined into the diagonal body to lower it even further. This achieves as much infocus possible for Cassegrain users who would like the focal length of their telescope to stay as close to design parameters as possible.

The Diagonal comes with a durable hard presentation box with protective foam insert, and two plastic end caps.

Our standard delivery charge for most of the UK is £2.95. All orders are shipped promptly, lower value items are sent Royal Mail 1st class and higher value or larger goods are shipped via reputable courier. All goods are shipped fully insured with FEDEX, UPS, DPD and Royal Mail, we do not use budget courier services, please note we can only ship to UK mainland addresses. We are not able to ship to forwarding agents or PO boxes.

Our Order Lookup system (see very top of each page for the icon and link) updates the order status in real time for you - simply by entering your order number and postcode..

We hold stock, dozens of telescopes and literally thousands of accessories that we ship out each business day, normally orders received before lunch are shipped that business day. We also direct ship from our UK suppliers, this means we have access to thousands of products that can ship fast to our customers.

Deliveries to UK mainland addresses are all shipped with fully insured premium services for £2.95, *some exceptions apply including many AB, FK, HS, IV, KA, KW, PA, PH, ZE postcodes. We will quote delivery charges to these areas where applicable prior to shipping (this does not normally affect lower value items shipped by Royal Mail).

You must inform us within one working day if the goods are lost or damaged in transit so that we can make a prompt claim against the delivery company and correct the problem. Please ensure all address details are accurate, we cannot be responsible for failed deliveries or losses arising from incorrect delivery addresses.

You agree that proof of delivery supplied by our delivery company is sufficient evidence to establish that goods have been received.

If your product is sent by Courier they will attempt delivery twice and a signature will be required. If they are unable to deliver because you are not available and after 5 days you have not contacted them to re-arrange. the goods will be returned to us and the return delivery costs may be charged to you

Altair 2 Inch SCT Quartz Dielectric Diagonal


Price: 70.00


The Altair Dielectric Diagonal for SCT telescopes with quartz mirror allows use of 2" eyepieces and is precision CNC machined with an extremely reflective, accurate and smooth mirror surface for maximum image contrast. Recommended to do justice to telescopes with good quality optics.

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