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Askar FRA500 90mm f/5.6 Refractor
US$ 2,133.87The best seller of the quintuplet series, the FRA500 90mm; It is an instrument suitable for astrophotography.
Thanks to the quintuplet spaced in the air, it provides a flattened field up to 44mm diagonally without the addition of further flatteners/reducers.
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- Remove This Item Diameter: 90 mm
- Remove This Item Focal Length: 500 mm
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