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Askar Reducer f/3.9 for Refractor FRA400
US$ 301.48FullFrame f/3.9 reducer for Askar FRA400 - Allows you to reduce the Askar FRA400 to f/3.9 with a flattened field for FullFrame - Diagonal equal to 44mm. Integrated 2" thread - M48x0.75 connection. Backfocus 55mmAskar FRA400 72mm f/5.6 Refractor
US$ 1,244.19Refractor 72mm flattened quintuplet Askar FRA400 focal length F / 5.6 - Correct image circle 44mm