Classic White Aluminum ED102 f/7 APO Triplet with Hoya FCD100 optics Clearance remove the lens from your

remove the lens from your camera

very intuitive method and the device has universally been named after him: The Bahtinov Mask

Now you can convert your CEM40/GEM45 mount into a wirelessly controllable one with this new the new iStarFiTM Wi-Fi adapter

latest updates can be found at Celestron

UpClose G2 features a lightweight and durable armor-protected chassis

Classic White Aluminum ED102 f/7 APO Triplet with Hoya FCD100 optics Clearance remove the lens from yourFeatures Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn's rings or the brightest deep sky treasures of the Messier catalog with Explore Scientific's 102mm FCD100 Apochromatic Refractor. This is essentially the same scope as the ES ED10207 01 but offering greater quality optics. We use Hoya FCD100 optics which is very similar in characteristics as Ohara FPL 53. Relying on technological innovation,