Founded in 1990, China Wudung Optics Co., Ltd. is an innovative optics technology telescope accessorie designer and manufacturer, which is engaging in photoelectric instruments and optic instruments. After about 20 years' development, our company has the capacity of complete machine process, spray-paint on surface, electron process, optics assembling. We have own custom telescope accessories review, research and development center, production line, marketing and after-sales service department and molding, injection, painting and silk printing workshops. About 60% of our orders are OEM or ODM. We can offer you R&D services that cover market research, design, mold making, samples, trial production and market testing.

The multi-function DiaGuider, shown on a Schmidt - Cassegrain telescope. The DiaGuider is a combined 1.25 inch diagonal, flip mirror, and fully adjustable off-axis guider - all in one! It facilitates simultaneous attachment of an eyepiece and camera. The DiaGuider has consistently been the most popular Versacorp accessory since its introduction in 1987.The DiaGuider is equally easy to use with film cameras. Even better, the DiaGuider is also a fully adjustable off-axis guider! When the eyepiece holder is pulled just short of all the way up, the diagonal reflector in the DiaGuider is properly placed for off-axis guiding with the use of your reticle eyepiece or auto guider. By combining the functions of a flip mirror and off-axis guider, the DiaGuider can be used effectively even with most systems that have minimal back focus capability!Not only is the DiaGuider a useful subject acquisition and guiding accessory, it is also a quality 1-1/4 inch star diagonal! The precision reflector used in the DiaGuider makes it excellent for visual observation.The DiaGuider lets you take pictures through your telescope without juggling accessories! The astronomer friendly design of the DiaGuider can make your telescope camera friendly, so you can really enjoy astrophotography!

The patented VersAgonal (U.S. Patents D295,871 and D310,381) allows its built-in optics to be used in a variety of combinations. It provides three visual magnifications and four photographic focal lengths with just the flip of a knob! The left figure shows the front section of the VersAgonal with its built-in Barlow lens. The next figure shows the rear section with its built-in 1/10 wave diagonal flip mirror, telecompressor, and manual shutter. The mirror is shown flipped up, where it will allow the image to reach a camera mounted behind the VersAgonal. The next figure shows the diagonal mirror flipped down, where it will reflect the image to an eyepiece. The right figure shows the built-in telecompressor (or Barlow, in models having two Barlow lenses) flipped down in the visual position, where it utilizes a stop on the diagonal mirror support. The telecompressor swings all the way down to the photographic position when the diagonal mirror is flipped up. The front Barlow lens can also be used in both visual and photo positions. Both the Barlow and telecompressor can be used together in their photographic positions.