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Home Accessories Adapters & Extension Tubes Altair Deluxe 70mm Imaging Extension Tube
The Altair Deluxe 2 inch extension tubes have 3x steel thumbscrews, making them ideal for astro-photography and heavy eyepieces or binoviewers. The accessory is clamped firmly from three angles, reducing flex in the optical train, unlike other extension tubes which have only one or two thumbscrews.Ideal for astrophotographyThis extension is ideal for many refractor owners when adding a camera and no longer using the star diagonal, the extension takes up the focus distance required and retains the best possible alignment of the camera sensor to your optic for optimal imaging.The stainless steel barrel has anti-slip safety kerfs instead of the usual safety undercut, and the barrel of the extension tube has straight parallel sides. This reduces tilt in imaging accessories or cameras, and preserves collimation better.A protective inner compression ring prevents marring your eyepieces or accessories, and the extension tube based is threaded to accept standard 2" filters.This extension tube adds 70mm additional backfocus between your telescope focuser and eyepiece or camera and fits 2 inch focusers.Most refractor telescopes require the use of an extension tube for straight-through use with a camera when the diagonal is removed, and 70mm is the most common length. A 70mm extension tube is also useful to bring the DayStar Quark to infinity focus for solar observing.
Focus on DSLR camera Buying this enabled me to achieve focus with my Skywatcher 120ed refractor & dslr camera. I am new to Astrophotography so wasn’t sure if this product was going to work, but recommendation & help from Harrison was excellent. Very speedy delivery as well. (21/04/2021) Darren - Bath
Perfect Focus for your DSLR Camera This tube enables me to get perfect focus from my Canon DSLR when atatched to my 120mm SkyWatcher refractor. It feels sturdy and well made in the hand and the three thumbscrews hold the camera securly and snugly. The finish is great and it looks and feels a quality product. I would reccomend it. (13/01/2021) Chris Lemin - London
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