Vixen Flattener HD Kit for FL55SS

Vixen Flattener HD Kit for FL55SS
Vixen Flattener HD Kit for FL55SS
Vixen Flattener HD Kit for FL55SS
Vixen Flattener HD Kit for FL55SS
Vixen Flattener HD Kit for FL55SS
Vixen Flattener HD Kit for FL55SS

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Suggested retail price: Contact local dealer

Upgrading the FL55SS to F5.7 Astrograph of high performance.

This kit consists of a high performance flattener lens and a connecing tube ring. It improves image quality of photography by achieving a flat focal plane and allows you to enjoy a high level of prime focus astrophotography. 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.

Vixen Flattener HD Kit for FL55SS Description

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

    The flattener HD for FL55SS improves off-axis image quality greatly with a minimum change of the focal length. It secures an image circle of 44mm that covers imaging sensors of full frame DSLR cameras.

  • A minimum loss of light toward the edge of photographic field. A 96% of rich illuminated field of view is adequate 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 flattener HD kit solves this problem as it works to keep a large 96% illuminated field of view at the very edge of a 44mm image circle. You will feel no hint of light loss if used with a full frame DSLR camera. Astrophotography of nebulae and star clusters are fun with the flattener HD Kit.

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

    96% with use of DSLR cameras with the full frame size of imaging sensors. 99% 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 and a standard telephoto lens or astrograph.

    FL55SS with the flattener HD lens

    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 fo the flattener HD lens. Besides, elaborate matte-finishes are given to eliminate internal reflections and loss of light completely.

  • Sample images "Veil Nebula"

  • Setup configurations

Specifications

Flattener HD Kit for FL55SS

  • Applicable to
    FL55SS optical tube assembly
  • Effective focal length
    300mm to 312mm
  • Magnification
    1.04x
  • Focal ratio
    F5.5 to F5.7
  • Image circle
    44mm in diameter
  • Illuminated field of view
    0.96
  • Optical construction
    2 elements in 1 group
  • Optical coatings
    AS coatings (More than 99.9% light transmission per surface)
  • Dimensions
    58mm dia. x 30mm long
  • Weight
    107 g

EX Tube 66

  • Dimensions
    68mm dia. x 76mm long
  • Weight
    89 g
For availability of products, please contact our local dealers. The specifications are subject to change without notice.

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