Altair 80mm Precision Self Centring Extension tube with 2" barrel - Twist Lock
This 2" Precision Self Centering Adapter with 80mm extension tube barrel is designed to keep your telescope in collimation when you change accessories such as a CCD camera or eyepiece. Recommended for fast focal ratio telescopes where keeping collimation is critical.
The problem: Conventional push-fit adapters with thumbscrews cause pressure on the side of the eyepiece barrel or camera nosepiece, which is naturally slightly different each time you remove or replace your camera or eyepiece. This pressure isn't repeatable, and that's why you often have to collimate your telescope with the camera or eypiece attached for best results.
The solution: The Self-Centering Adapter gets around this problem by applying an even clamping pressure all the way around the 2" eyepiece or camera barrel. It therefore remains in collimation even if you remove and replace the camera or eyepiece. When collimating your telescope for imaging, you can leave the Precision Self Centering Adapter in place and change accessories at will. The Self Centering Adapter adds 80mm of extension to the optical path length.
Incl. VAT 20.00 % ( £33.33 )
Incl. VAT 20.00 % ( £43.67 )
Incl. VAT 20.00 % ( £17.83 )
Incl. VAT 20.00 % ( £166.50 )
There have been no reviews for this product.
Click here to join the Altair Astro Product Discussion Forum
Where to buy Altair Astro products:
- Tring Astronomy Centre (Hertfordshire, Advanced Stockist)
- Green Witch (Birstal & Cambridge, Advanced Stockist)
- Telescope House (Kent, Advanced Stockist)
- Harrison Telescopes (Stockist)
- Rother Valley Optics (Stockist)
- Wex Photographic (Norwich, Stockist)
- Ian King Imaging (Kent, Stockist)
- Peak 2 Valley Instruments (Derbyshire, Stockist)
- Widescreen Centre (Cambridgeshire, Stockist)
- F1 Telescopes (Kent)
- Grovers (North Yorkshire)
- Io Astronomy Please note: IO Astronomy voluntarily ceased trading with large unpaid debts affecting the entire UK astronomy industry. You may contact us for problems / issues with Altair or iOptron products ONLY - or try Darkframe Optics / Dave Woods. Unfortunately, we will not be able to support undeclared products bought from the ex-directors after the company ceased trading.
- Artesky Italy, Europe
- Astromarket AST Optics Belgium, Europe
- Astro AS Denmark, Europe
- Astro Sweden Belgium, Europe
- Ktech Telescopes Ireland, Europe
- Pierro Astro France, Europe
- SkyVision France, Europe
- Teleskop Service Ransburg Germany, Europe
North America & Canada orders:
Products can be ordered online from Altair with tracked insured shipping to anywhere in the world. For large items shipping price may need to be re-quoted.
Russia orders: Please contact.
Availability: If product shows as out of stock, please click on the "Notify me when in stock" button to receive instant notification of availability. Altair Astro and iOptron reserve the right to change the product price and specification without notice.