VSD Focal Reducer 0.79x VSD Focal Reducer 0.79x

Product code: X000079
in stock
£629.17 (ex. VAT)

PREORDER : 2 weeks

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Product information

  • Focal reducer, V-0.79 for VSD100 F3.8 astrographs
  • Reduces the focal length to 300 mm, F3.0
  • Illumination ?44 mm (compatible with 36x24 full-frame)
  • Premium AS coating
  • Enables use of extremely short exposure times
  • Weight: 330 g
  • Made in Japan

The Focal Reducer V-0.79 transforms the VSD-100 F3.8 Astrograph into a faster astrograph with a 300 mm focal width and a 1:3.0 aperture ratio.

The optical structure of the reducer consists of 3 elements in 3 groups of ED glass and delivers a light transmission of 99.9%58 mm filter thread for standard photo filters.

For DSLR cameras with up to 35 mm full-frame sensor (69% illumination).

The reducer allows you to take photos of an object within a few seconds or minutes without the need for complex operations.

  • Reduction: 380 mm (F3.8) => 300 mm (F3.0)
  • Illumination: ?44 mm (compatible with 36x24 full-frame) *69.3% illumination at lens edge
  • Coating: AS coating
  • Optical structure: 3 elements in 3 groups
  • Weight: 330 g
  • Filter: 58 mm filter thread
  • Thread: M84, P=1 mm (telescope/male); M60, P=0.75 mm (camera/female)
  • Prime-focus photography wide photo adapter, 60 mm or T-ring (N)
  • Squaring: Squaring adjustment system, built-in


  • VSD reducer

Product Info

PREORDER 2 weeks
EAN 4955295266371
Brand Vixen
Product Code X000079
Delivery Weight Package