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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
Weighs 14lbs
clear image with the maximum amount of color and detail
9 Focal Length (mm) 1200 Secondary Diameter 48mm Secondary Obstruction (by diameter) 24% Secondary Obstruction by Area 6% Observational Info Dawes Limit 0
Offering the portability of the Advanced Series and the precision of the CGE
14% Secondary Mirror Obstruction 2
Bahtinov Focus Mask - Celestron SCT Sport Optics Weighs 14lbsBahtinov 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
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