Sale Starts July 23, 2011!
Great Planetary Eyepieces!  We will be getting our new order of these planetary eyepieces late next week. These are a very well reviewed series of Planetary Eyepieces. Great flat fields, very high powers, and excellent eye relief! These will be in stock about July 28. Our price is going to be at about the very best you can find anywhere, and we will include a premium US made bolt-type case.

We will have a good range of focal lengths from very high to medium power. These include 2.5, 3.2, 4, 5, 6, 7.5, and 9 mm focal lengths. In addition to our great price, we have a set of three available at an even better price.

FULLY MULTI-COATED - Used but in excellent condition.

Make a dream refractor - 300 to 500 focal length and 260 mm long.
This came from a government camera lens costing thousands!

Consider this a fairly easy, but not a trivial,
telescope construction project.

Refractor Lens has two assemblies. One is a 155 mm air-spaced triplet lens with an ED Lanthanum element. The second is a 85 mm corrector lens. All lenses fully multi-coated.
The 155 mm assembly makes a 190 mm focal length (f/1.25) refractor by itself. This objective assembly has 3air-spaced elements including an ED element.	The second assembly in this refractor optics gives a final system of 310 mm to 500 mm focal length (f/2 to f/3.25)
Side view of refractor assemblies	These lens assemblies came from a government camera that cost thousands to produce. This will make a dream, fast refractor at 6.1 inches (155 mm) and f/3.25 to f/2.0. All elements are fully multi-coated. One of the elements is an ED Lanthanum lens. There are only a VERY few of these available. As they say, when they are gone, they are gone. These elements are packed with care and sent to you with suggested spacing for several different focal ratios. The main  lens element itself will make a fantastic f/1.25  scope. Use that for a real fast CCD camera element. With the corrector, you get a high quality, and still a very fast, f/2.0 to f/3.25 refractor. These assemblies produce 300 to 500 mm focal length. Because of the corrector element, the total length of the refractor itself is only 250 mm long or a little longer. This is a fast lens system that will make a great deep-sky telescope and "rich field" scope. Would take fantastic deep-sky photos!
To construct this telescope you need to provide a tube and supports for the two assemblies. You also will need to support these assemblies in such a way that they can be aligned the first time. You need a refractor focus mount. The resulting job is much easier than grinding a mirror, but not a trivial job. A 6 inch refractor is usually difficult to mount, but the short tube length makes this fairly easy. Contrast in very important to bring out faint deep-sky features and fine detail. This refractor has advanced multi-coated optics and the ED element in the triplet. Shipping by mail on this item within the US is $15.95. We do not plan to ship these outside the United States. Email us about to discuss this if you wish.
6 Inch Refractor Lens System Price Reduced for Short Time Only: $199.95.
Barrels for Main Cell We now have available the barrels that held the main cell for these lens sets. Please note from the photos how these are made. While these barrels only hold the main cell, that part of the mounting is solved with a very sturdy holder. These barrels include the set-screws. If you have any questions, give us a call.
Barrels for Main Cell of 6 Inch Refractor Lens System Price: $19.95.