Vixen Optics – Astronomy Now

13 February 2025

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Vixen Optics VSD 100/f3.8 ultra-fast astrograph

4 April 2015 Steve Ringwood

Astrophotographers seeking an ultra-fast refractor designed for exquisite digital Imaging may wish to consider this 100mm aperture, 5-element f/3.8 system from Vixen, appraised by Steve Ringwood.