Modular dual 31.7mm/50.8mm widefield eyepieces that performs as well as eyepieces three times its price.

Premium deep sky nebula filter from Baader Planetarium

The BAADER Fringe-Killer Filter minimizes unwanted blue fringing, comparable to a Minus-Violet-Filter, while retaining a very pleasing color balance. This would be a contradiction in itself ? only made possible by applying modern DWDM plasma assisted coating technology, allowing almost a hundred coating layers to be accumulated onto a planoptically polished substrate ? without destroying the optical figure! This fineoptical tool will help a small refractor to really put the advertized magnification within reach. Performance rivals that of the most expensive color correcting lens systems, costing 20 times as much!

A unique filter for many different astronomical tasks. Incomparable in accracy to combinations of generic color filters made of raw polished glass ? where surface inaccuracy adds up in the optical wave front to an unbearable degree! Especially designed to improve the ubiquitous beginners telescopes ? to provide a professional replacement for the simple `dark green` Moon & Solar-Filters made of `raw polished` glass.

The only infrared blocker in this price range featuring a planeoptically polished substrate, parallel to within 30 seconds of arc! In combination with the unique properties of the BAADER Contrast-Booster the resulting spectral window eliminates all known effects of image deterioration ? an absolute MUST for digital imaging.