astro.n-minus

Accessory · MSRP $274

Askar F3.9 Full Frame Reducer for FRA400/FRA500

Key specifications

Accessory typeFlattener/Reducer
Back focus55 mm
Factor0.7 ×

All specifications

InterfaceM48x0.75 with built-in 2-inch filter thread
Compatible withAskar FRA400, FRA500

About

A 0.7x full-frame reducer for the Askar FRA400, taking its 400 mm f/5.6 down to 280 mm at f/3.9. Back focus is the standard 55 mm and it has a built-in M48x0.75 thread for 2-inch filters.

Where to buy

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