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Vixen Reducer HD Kit for Vixen FL55SS fluorite apochromatic refractor

Vixen Reducer HD Kit for Vixen FL55SS fluorite apochromatic refractor

The Vixen Reducer HD Kit for Vixen FL55SS apochromatic refractor includes the Flattener HD field flattener for FL55SS, the Reducer HD aplanatic focal reducer for FL55SS and the EX Tube 66 extension tube. Complete correcting and reducing lens system for Vixen FL55SS fluorite apochromatic refractor. Advanced Vixen AS Coating with 99.9% light transmission on each surface.

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Vixen Reducer HD Kit for Vixen FL55SS fluorite apochromatic refractor

Vixen

VX-37253

New product

The Vixen Reducer HD Kit for Vixen FL55SS apochromatic refractor includes the Flattener HD field flattener for FL55SS, the Reducer HD aplanatic focal reducer for FL55SS and the EX Tube 66 extension tube. Complete correcting and reducing lens system for Vixen FL55SS fluorite apochromatic refractor. Advanced Vixen AS Coating with 99.9% light transmission on each surface.

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899,00 €

Ordered upon request

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Vixen Reducer HD Kit for Vixen FL55SS apochromatic refractor

The Vixen Reducer HD Kit for Vixen FL55SS apochromatic refractor includes the Flattener HD field flattener for FL55SS, the Reducer HD aplanatic focal reducer for FL55SS and the EX Tube 66 extension tube.

It is complete correcting and reducing lens system for Vixen FL55SS fluorite apochromatic refractor designed to work with digital cameras or CCD/CMOS up to full-frame format (24x36 mm). Transforms the Vixen FL55SS into a flat field astrograps with two differents focal ratio available. You can choose to use the HD field flattener only or in combination with the HD focal reducer.

On the Vixen FL55SS optics you can use the Flattener HD only in order to get a corrected field with the highest edge illumination possibile. The field flattener enlarge focal length by 1.04x delivering a focal lenght of 312 mm (focal ratio becomes around F/5.7). With the Reducer HD for FL55SS the focal ratio goes down to F/4.3 for a focal leght of 237 mm.

Vixen AS Coating

All the new high performance correctors by Vixen include the highly renowned Vixen AS Coating that ensures over 99.9% light transmission for each optical surface. It is the same coating used also in the Vixen flagship VSD 5-lens astrograph. This advanced coating cuts down to a negligible effect any possibile loss of light and any ghost or flare image.

Flattener HD for FL55SS specifications

Magnfication1,04x
Resulting focal length312 mm
Focal ratioF/5.67
Image circle *144 mm
Peripheral illumination

 96%

Optical design2 elements in 1 group
CoatingVixen AS Coating (over 99,9% light transmission for each lens surface)
Dimensions / Weight58 x 30 mm / 107 g

Reducer HD for FL55SS specifications (to be used along the Flattener HD for FL55SS)

Magnfication0,79x
Resulting focal length237 mm
Focal ratioF/4.3
Image circle *144 mm
Peripheral illumination86%
Optical design3 elements in 3 group
CoatingVixen AS Coating (over 99,9% light transmission for each lens surface)

*1 : Over 60% is considered an acceptable value in photography. Field correction covers an imaging field of 44 mm big enough to cover the full-frame APS format (24 x 36 mm) and much higher than APS-C format (28.8 mm).

Vixen FL55SS Spot diagrams

Vixen FL55SS spot diagrams at prime focus without correctors (F/5.5)

Vixen FL55SS spot diagrams at prime focus with Flattener HD for FL55SS field flattener (F/5.7)

Vixen FL55SS spot diagrams at prime focus with Flattener HD for FL55SS field flattener and Reducer HD for FL55SS focal reducer (F/4.3)

Example images

The Veil nebula complex in Cygnus taken with Vixen FL55SS and Flattener HD for FL55SS field flattener

The North America nebula complex in Cygnus taken with Vixen FL55SS, Flattener HD for FL55SS field flattener and Reducer HD for FL55SS focal reducer

System Chart

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