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Askar F/3.9 focal reducer for FRA400 and FRA500

€309.00
Availability: In stock
Only 3 left
SKU:
ASK-FRA40056-RED

Askar F/3.9 focal reducer for FRA400 and FRA500

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Askar F/3.9 focal reducer for FRA400 and FRA500

Askar provides a brand-new F3.9 full frame reducer for the FRA400/5.6 and FRA500/5.6 astrographs, further reducing the focal length and thus shortening the exposure time on its original focal length and f/5.6 focal ratio design basis. The reduction factor is 0.7×, and the reduced focal length is 280 mm (FRA400) or 350 mm (FRA500), which can satisfy most deep-sky astrophotography. The back focus is standard 55mm. The reducer has built-in M48×0.75 thread, easy for the attachment of 2" filters.


More Information
Product Status New
Package width 9 cm
Package height 8,5 cm
Package depth 13 cm
No. of parcels 1
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