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Vixen - VSD100F3.8 Super Apochromat OTAadd this item to shopping cartThis product is highly recommended
Code: 26145
VIXEN New Ultra Fast Astrograph VSD 100/f3.8 for serious wide-field photography


Another superb Vixen telescope designed and manufactured in Japan. This beautiful top of the heap astrograph refractor yields high contrast images, excellent colour correction and field flatness perfect for visual and astrophotography alike. Vixen’s goal was to develop a process to outperform the views from a premium photo lenses. The result is the introduction of MTF (Modulation Transfer Function), previously used for evaluating the optical performance of camera lenses. Thus, it allows for a more precise evaluation of the photographic performance as compared to conventional spot diagrams. This is a new direction in the choice of an astrograph.
The innovative wide and flat imaging field, that covers 645 medium format cameras, and e 5 elements in 5 group lens design completely eliminates a violet tint in chromatic aberration (blue halo). With an SD lens in the front objective group and an ED lens in the rear objective group, this scope achieves superb colour correction. The blue halos around stars, that are visible in astrophotography and are hard to reduce with a 4 elements in 4 group lens design, are corrected successfully. In addition, astigmatism and coma aberrations are corrected to an extremely high level of image quality.

The Strehl intensity on the lens design of the VSD100F3.8 is better than that on a 4 elements in 4 group lens design by approximately 10%. It does not decrease abruptly on stars away from the centre of a photographic field. It is ideally suited to detect faint stars. The image circle is as large as 70mm in diameter (60% illuminated). The star images are as small as @ 15 microns around the corners, resulting in excellent field flatness.

The lenses of the VSD100F3.8 have the most up-to-date coatings of extremely high reflectivity. These have been developed to match the characteristics of each lens element in order to avoid the deterioration of image contrast due to the increase of lens elements. It boasts of a 99.9% light transmission at the maximum per lens surface and achieves superb images with extremely high contrast with no ghost and no flare images.

The VSD100F3.8 has an oversized focuser that can be attached to the 645 medium format cameras without difficulty. Highly accurate focusing is possible with the non-rotational helical fine focuser, where the distance of drawing in and out the focuser can be read as small as 20 microns with the provided vernier scale. All the graduations are engraved.A focal reducer (0.79x) with the optical design of 3 elements in 3 groups and a tele-extender (1.58x) with the optical design of 4 elements in 3 groups will be available as optional parts. With the use of these optional accessories, the VSD100F3.8 can be transformed to an even faster astrograph with 300mm in focal length at F3.0, or can be converted to a more multi use optical tube with 600mm in focal length at F6.0 for observing planets and other celestial objects.

SPECIFICATIONS:

Aperture: 100mm (SD Apochromatic)
5 elements in 5 groups (one SD lens and one ED lens)
Focal Length: 380mm (f/3.8)

Optional focal reducer and tele-extender also will be available
Comes in sleek aluminium carry case

**Note - this telescope is for professional grade astrophotography and cannot be used visually with star diagonals**

**Special Order depending on available stocks 2-4 weeks**




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Price: $7,695.00Recommended Options
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