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Askar F3.9 Reducer for Askar FRA600 108mm Astrograph

Brand: Sharpstar / Askar

SKU : SS-FR3.9-FRA600

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Product Details

  • Made specifically with the Askar 108mm f/5.6 quintuplet astrograph in mind, The Askar FRA 600 f/3.9 full-frame focal reducer minimized the effective focal ratio by a factor of 0.7x. Equipped with 4 lens elements and with a backfocus of 55mm, this reducer will take your f/5.6 scope to a f/3.9 system, leading to a wider field of view and a reduced exposure time. Capturing wide-field images of large celestial objects in deep space has never been easier. The threads of this reducer are made for M48X0.75 (2") filters. 

  • specifications

    Back Focus55mm
  • included items

    • Askar F3.9 Reducer for Askar FRA600 108mm Astrograph
    • Adapter

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