Bahtinov Focus Mask - Bat-inov GoTo Hard Case (select configurations)

Hard Case (select configurations)

Simply place your phone in the unique StarSense dock and launch the StarSense Explorer app

Not compatible with smaller 42mm T rings

Both planetary filters

60° Accessory Package

Bahtinov Focus Mask - Bat-inov GoTo Hard Case (select configurations)Bahtinov 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. Adjustable Special Edition Bat inov Mask for telescopes with dew shield or front end diameter from 8. 5" to 10. 5" The mask works by creating a group of three diffraction spikes. Two of these generate a cross