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.
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
Magnfication | 1,04x |
---|---|
Resulting focal length | 312 mm |
Focal ratio | F/5.67 |
Image circle *1 | 44 mm |
Peripheral illumination |
96% |
Optical design | 2 elements in 1 group |
Coating | Vixen AS Coating (over 99,9% light transmission for each lens surface) |
Dimensions / Weight | 58 x 30 mm / 107 g |
Reducer HD for FL55SS specifications (to be used along the Flattener HD for FL55SS)
Magnfication | 0,79x |
---|---|
Resulting focal length | 237 mm |
Focal ratio | F/4.3 |
Image circle *1 | 44 mm |
Peripheral illumination | 86% |
Optical design | 3 elements in 3 group |
Coating | Vixen 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
Product Status | New |
---|---|
Package width | 13 cm |
Package height | 16,5 cm |
Package depth | 6,5 cm |