Pay in 4 interest-free payments of $30.00 Learn more
Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
2 mm/3 inches
designed for users who want powerful magnification in a compact
100% Safe for Eclipse Viewing
Housing Plastic housing
The medium Vixen-style saddle plate is 7
Field Flattener f/5 to f/7 firstlight 2 mm/3 inchesWhen doing astrophotography with refractor type telescopes, the faster the focal ratio the more field curvature becomes a problem. Field curvature will appear in the corners of astrophotographs, making the stars smear perpendicular to the axis of the image. This is called coma coma is Latin for comet, because the stars look like comets. The more the curvature, the closer to the center the coma appears. The larger the sensor, the worse the coma.
US$ 40.00
US$ 95.00
US$ 107.00
US$ 40.00
US$ 55.00
US$ 118.00
US$ 107.00
US$ 171.00
US$ 35.00
US$ 107.00
US$ 147.50
US$ 107.00
