Askar F3.9 Full Frame Reducer for FRA400 & FRA500 Astrographs - Perfect for Deep Space Astrophotography & Wide-Field Imaging

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Askar F3.9 Full Frame Reducer for FRA400 & FRA500 Astrographs - Perfect for Deep Space Astrophotography & Wide-Field Imaging

Sku: 60331782 in stock

$150.7

$274

45% Off

Delivery & Return: Free shipping on all orders over $50

Estimated Delivery: 10-15 days international

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Description

Askar provides a F3.9 full frame reducer for FRA400 Astrograph, further reducing the focal length and thus shortening the exposure time on its original 400 focal length and f/5.6 focal ratio design basis. The reduction factor is 0.7×, and the reduced focal length is 280mm, 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.

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Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.

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