Robtics Bathinov masks fits 65 to 100mm dewcap diameter
For lens 60 to 65mm lens diameter
This mask help you, to get real sharp star foto's
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The 2" field flattener for AIRY BLACK is specially designed for our AIRY BLACK apochromatic refractors and it generate a very large flat field, to use with cameras with big sensors, up to APS-C. In this way, the pictures will be perfect, with pinpoint stars up to the edge of the field!This flattener is directly screwed to the thread back on the focuser's...