Vixen Reducer HD Kit for FL55SS

Vixen Reducer HD Kit for FL55SS
Vixen Reducer HD Kit for FL55SS
Vixen Reducer HD Kit for FL55SS
Vixen Reducer HD Kit for FL55SS
Vixen Reducer HD Kit for FL55SS
Vixen Reducer HD Kit for FL55SS
Vixen Reducer HD Kit for FL55SS
Vixen Reducer HD Kit for FL55SS

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Suggested retail price: Contact local dealer

Upgrading the FL55SS to F4.3 Astrograph of high performance.

This kit consists of a high performance flattener lens, a high performance focal reducer and a connecing tube ring. It improves image quality of photography by achieving a flat focal plane and reduces the focal length of the FL55SS by 0.79 times. The flattener lens corrects aberration on the periphery of a photographic field of view and it keeps images of stars sharp throughout the photographic field. The focal reducer achieves faster photographic speed of F4.3 by reducing the scope's focal length.

Vixen Reducer HD Kit for FL55SS Description

  • Sharp star images throughout a photographic field of full frame DSLR cameras.

    The flattener HD lens improves off-axis image quality greatly with a minimum change of the focal length. The focal reducer HD5.5 reduces the focal ratio of the FL55SS scope from F5.5 to F4.3 (by 0.79 times) while keeping a 44mm image circle that covers imaging sensors of full frame DSLR cameras.

  • A minimum loss of light toward the edge of photographic field. A 86% of illuminated field of view is sufficient for the full-size imaging sensors.

    Generally astrophotographers are annoyed with the drop-off of light toward the edge of illuminated field of view when taking faint deep-sky objects with a telephoto lense or dedicated astrophoto instrument. Although this may be corrected by complicated image processing on a PC, it all depends on the image quality of an original photograph. The focal reducer HD5.5 works to keep a large 86% illuminated field of view even at the very edge of a 44mm image circle in combined with the flattener HD lens. Astrophotography of nebulae and star clusters are fun with the focal reducer HD Kit.

  • Illuminated field of view at the edge of the photographic field.

    86% with use of DSLR cameras with the full frame size of imaging sensors. 97% with use of DSLR cameras with the APS-C size of imaging sensors.

  • Comparision in light loss between the FL55SS with the flattener HD lens plus focal reducer HD5.5 and a standard telephoto lens or astrograph.

    FL55SS with the flattener HD lens plus focal reducer HD5.5

    Standard telephoto lens or astrograph

  • Ultimate light transmission coatings for extremely high contrast images.

    The same anti-reflection AS coatings that are used for our high-end VSD100F3.8 renowned for extremely high light transmission (99.9% per surface) are provided on each of the lens surfaces of the flattener HD lens and focal reducer HD5.5. Besides, elaborate matte-finishes are given to eliminate internal reflections and loss of light completely.

  • Sample images "Veil nebula" "Debeb and North America nebula"

  • Setup configurations

Specifications

Flattener HD for FL55SS

  • Applicable to
    FL55SS optical tube asembly
  • Effective focal length
    500mm to 312mm
  • Magnification
    1.04x
  • Focal ratio
    F5.5 to F5.7
  • Image circle
    44mm in diameter
  • Illuminated filed of view
    0.96
  • Optical construction
    2 elements in 1 group
  • Optical coatings
    AS coatings (More than 99.9% light transmission per lens surface)
  • Dimensions
    58mm dia x 30mm long
  • Weight
    107 g

Flattener HD for FL55SS plus focal reducer HD5.5

  • Applicable to
    FL55SS optical tube assembly
  • Effective focal length
    300mm to 237mm
  • Magnification
    0.79x
  • Image circle
    44mm in diameter
  • Illuminated field of view
    0.86
  • Optical construction
    2 elements in 1 group + 3 elements in 3 groups
  • Optical coatings
    AS coatings (More than 99.9% light transmission per lens surface)

Focal reducer HD5.5

  • Applicable to
    FL55SS optical tube assembly
  • Magnification
    0.76x
  • Optical construction
    3 elements in 3 groups
  • Optical coatings
    AS caotings (More than 99.9% light transmission per lens surface)
  • Dimensions
    68mm dia. 45.3mm long
  • Weight
    237 g
For availability of products, please contact our local dealers. The specifications are subject to change without notice.

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