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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
The USFS is also compatible with the optional Celestron Focus Motor (#94155-A)
1 Resolution (Rayleigh) 1
dual-speed
A great accessory for daytime terrestrial viewing with your telescope
and then thrill to well resolved celestial views when twilight fades
Bahtinov Focus Mask - Meade SCT 56° The USFS is also compatibleBahtinov 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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