Bahtinov Focus Mask - ASA 10" Telescope Bundle they rely exclusively on the

they rely exclusively on the phone’s gyros and accelerometers

Optional finder scope

this optical tube pairs perfectly with a wide variety of mounts

Small size and lighter weight permit use of lighter-duty tripods for easy field carrying and transportation

000 objects in the night sky

Bahtinov Focus Mask - ASA 10" Telescope Bundle they rely exclusively on theBahtinov focus masks provide an ingenious way to easily focus your DSLR camera, webcam or CCD camera for astrophotography. The method is simple, very intuitive, and the device has universally been named after the inventor, Pavel Bahtinov. The mask works by creating a group of three diffraction spikes. Two of these generate a cross pattern, and the 3rd moves with your focus. You know you have achieved perfect focus when the 3rd diffraction spike is