Instructions1Connect the USB cable attached to the external webcam to an available USB port on thecomputer. Allow 10-15 seconds for the computer to recognize the external webcam.2Select the "Photo Booth" program, a program that uses the webcam to show you    more »

Instructions1Connect the USB cable attached to the external webcam to an available USB port on thecomputer. Allow 10-15 seconds for the computer to recognize the external webcam.2Select the "Photo Booth" program, a program that uses the webcam to show you    more »

1. Make sure that the finderscope is aligned to the main scope in the normal way. 2. Align the equatorial mount for the north star (Polaris) here in the northern hemisphere. In the southern hemisphere you use Sigma Octans. 3. Turn on the reticle's small    more »

The Bresser Aurora is a Newtonian reflector telescope. Reflector telescopes had been around for a while before Newton made his design. The advantage was that mirrors which produced better images than refractor optics at that timebecause it eliminated chro    more »

We are announcing the new ED80CF, the 80mm f/6 Air-Spaced Triplet Apochromat with a carbon fiber tube. The primary differences between this new model and the original ED80 Air-Spaced Triplet (classic white tube) are:Carbon Fiber Body and Dew Shield: Carbo    more »