Vixen Telescope Focal Reducer HD

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    Vixen Telescope Focal Reducer HD
    Vixen Telescope Focal Reducer HD

Vixen Telescope Focal Reducer HD

37247

  • $398.50

Let us take photography of Nebula! Hign-performance Reducer for AX103S and VC200L

Hign-performance Reducer for AX103S, VC200L telescopes. Reduces focal length by 0.77x.

Enquire for more information or email us specifics at sales@astro.com.sg.

Vixen Telescope Focal Reducer HD Description

  • Hign-performance Reducer for AX103S and VC200L Telescopes.

    Hign-performance Reducer for AX103S, VC200L telescopes. Reduces focal length by 0.77x.

  • Applicable to AX103S

    The AX103S optical tube incorporates a flattener lens and outperforms high imaging capability even by itself. From this reason, the Reducer HD can be used without using the SD Flattener HD. The AX103S covers an imaging field of DSLR camera with full-format sensor with 44mm image circle.

  • Applicable to VC200L

    Originally incorporating a flattener lens inside, the VC200L optical tube offers high imaging capability by itself. From this reason, the Reducer HD can be used without using the SD Flattener HD together. The VC200L delivers 36mm image circle (peripheral illumination by 60%) fully covering an imaging field of DSLR camera with APS-C sensor, and also offers comparably sharp images with the center in spite of 47% peripheral illumination at dia. 44mm image circle. It covers an imaging field of DSLR camera with image circle of dia. 28mm with APS-C sensor and dia. 44 with full-format sensor.

  • High Contrast

    The same anti-reflective AS coatings, which are used fo our high-end VSD100F3.8 Astrograph, are used to take advantage of 99.9% superb high transmission of light per lens surface. Loss of light, ghost and flare images are eliminated substantially due to the complete matte finish inside.

  • Applicable to SD series telesopes by using SD Flattner HD Kit(sold seperately) together

    Applicable to SD 81S, SD103S and SD115S telesopes by using SD Flattner HD Kit(sold seperately) together. While keeping image circle as Φ44mm, reduces focal length by 0.79x (f/7.7→f/6.1) and largely improves sharpness over the entire imaging field of the DSLR camera with full-format sensor.

  • Example Image with AX103S + Reducer HD : M8 Lagoon Nebula, M20 Trifid Nebula

    About Full-format and APS-C is a common name for size representing the size of the light receiving plane (imaging sensor or film) of DSLR camera. Full-format (36x24mm), APS-C (23x16mm) and Four Thirds (17.3x13mm) are typical available standard for DSLR cameras. In general, the larger the light receiving plane, the larger the range can be shot.

  • Example image with VC200L + Reducer HD : M101 Pinwheel Galaxy

  • System Structure Diagram

 

Reducer HD

  • Lens Elements
    2 elements in 2 groups
  • Coating
    AS Coating (Over 99.9% light transmission per lens surface)
  • Size/Weight
    Φ68×45.2mm／218g
  • Others
    Applicable to 52mm Filter

AX103S

  • Focal Length
    825mm→635mm (0.77x) f/8→f/6.2
  • Image Circle ※1
    Φ44mm
  • Peripheral Illumination
    0.63

VC200L

  • Focal Length
    1800mm→1386mm (0.77x) f/9→f/6.9
  • Image Circle
    Φ36mm※2
  • Peripheral Illumination
    0.6

SD115S

  • Focal Length
    890mm→908mm (1.02x) f/7.7→f/7.9
  • Image Circle ※1
    Φ44mm
  • Peripheral Illumination
    0.8

 

  •  
    ※1: Over 60% is secured in acceptable image range as well as peripheral illumination. It covers an imaing field of (D)SLR camera of full-format at dia. 44mm and that of APS-C at dia. 28.8mm.
  •  
    ※2：Dia. 44mm for imaging field (47% at peripheral illumination)