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The CEM120EC2 utilizes two high resolution encoders
Offering the portability of the Advanced Series and the precision of the CGE
The filter box is foam lined for protection and shock absorption during handling
NexStar+ hand control with USB port
2 amps Resolution (Dawes) 0
Bahtinov Focus Mask - Celestron SCT Sport Optics The CEM120EC2 utilizes two highBahtinov 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
