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100% Safe for Eclipse Viewing
Whether you're new to astronomy or an experienced observer
designed for users who want powerful magnification in a compact
Whether you are trail riding
Field Flattener f/5 to f/7 firstlight 100% Safe for Eclipse ViewingWhen doing astrophotography with refractor type telescopes, the faster the focal ratio the more field curvature becomes a problem. Field curvature will appear in the corners of astrophotographs, making the stars smear perpendicular to the axis of the image. This is called coma coma is Latin for comet, because the stars look like comets. The more the curvature, the closer to the center the coma appears. The larger the sensor, the worse the coma.
