The Baader Telecentric Systems 2x and 4x presents an optimal way to achieve a parallel f/30 beam with every refractor. This is necessary for presenting Hαdetails evenly across the entire field of view of solar filters from "Solar Spectrum". The telecentric is often confused with a barlow. ...
Alpine Astronomical was founded out of our love and interest in amateur astronomy. We stand behind what we sell and will work hard to help you with any issues. If you are not satisfied with a product, you may certainly return the item. Please see our Returns policy for specific details. ...