Vixen SD115S II OTA 115mm 890mm f7.5
It is the successor to the favorably reviewed SD115S as a photo-visual optical tube that is the SD series of apochromatic refractors. With an aperture of 115mm and a focal length of 890mm, you can use it for a wide variety of purposes, from visual observation to astrophotography.
Improved spacers for beautiful star images
In the former SD115S optical tube, small fragments of tin foil are set at three places evenly around the lens as spacers.
The small fragments that appear inside the effective aperture of the lens as protrusion generates diffractions around the star image by the light of incidence, resulting in three breaks radially around the star image. You get the star image beautifully as the diffraction light becomes uniform by exchanging the small fragments for a ring-shaped spacer.
High-performance SD glass lens that suppresses color fringing
In the refractor that gathers light using a lens, color fringing (chromatic aberration) occurs by the difference in refractive index from different wavelengths (colors) of the light that passes through the lens. Then, an invention was extra-low dispersion glass to eliminate the chromatic aberration.
Prepared to meet a wide range of purposes from visual observation to astrophotography
By setting a reasonable focal length (890mm) for the objective effective aperture (115mm), you can use it for a wide range of purposes, from planetary observations to photography of nebular and star clusters. The supplied flip mirror diagonal allows you to switch the optical path with a knob to straight through or vertical orientation quickly.
Two eyepieces with different magnifications are usable quickly. You readily switch between visual observing and photography by attaching a camera on one side and an eyepiece on the other. The SD115SII is equipped with a standard dovetail attachment plate and a metal carry handle. Those accessories make you easily attaching to and detaching from the mount and transporting the optial tube.
Available for full-frame DSLR cameras/CMOS cameras, suitable for high-quality astrophotography
In combination with an SD Reducer HD Kit and an SD Flattener HD Kit (both sold separately), you will be ready to take high-quality astrophotography with a full-frame DSLR camera or CMOS camera.
Brand: Vixen |
Code: VX26087
Supplier Code: 26087
Brand: Vixen |
Code: VX26087
Supplier Code: 26087
At a glance
It is the successor to the favorably reviewed SD115S as a photo-visual optical tube that is the SD series of apochromatic refractors. With an aperture of 115mm and a focal length of 890mm, you can use it for a wide variety of purposes, from visual observation to astrophotography.
Improved spacers for beautiful star imagesIn the former SD115S optical tube, small fragments of tin foil are set at three places evenly around the lens as spacers. The small fragments that appear inside the effective aperture of the lens as protrusion generates diffractions around the star image by the light of incidence, resulting in three breaks radially around the star image. You get the star image beautifully as the diffraction light becomes uniform by exchanging the small fragments for a ring-shaped spacer. |
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High-performance SD glass lens that suppresses color fringingIn the refractor that gathers light using a lens, color fringing (chromatic aberration) occurs by the difference in refractive index from different wavelengths (colors) of the light that passes through the lens. Then, an invention was extra-low dispersion glass to eliminate the chromatic aberration. |
Prepared to meet a wide range of purposes from visual observation to astrophotographyBy setting a reasonable focal length (890mm) for the objective effective aperture (115mm), you can use it for a wide range of purposes, from planetary observations to photography of nebular and star clusters. The supplied flip mirror diagonal allows you to switch the optical path with a knob to straight through or vertical orientation quickly. Two eyepieces with different magnifications are usable quickly. You readily switch between visual observing and photography by attaching a camera on one side and an eyepiece on the other. The SD115SII is equipped with a standard dovetail attachment plate and a metal carry handle. Those accessories make you easily attaching to and detaching from the mount and transporting the optial tube. |
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Available for full-frame DSLR cameras/CMOS cameras, suitable for high-quality astrophotographyIn combination with an SD Reducer HD Kit and an SD Flattener HD Kit (both sold separately), you will be ready to take high-quality astrophotography with a full-frame DSLR camera or CMOS camera. |
