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Vixen - NA140SS Refractor OTAadd this item to shopping cartThis product is highly recommended
Code: 58681
Limited Time Special 4 element neo achromat 140mm f/5.7 refractor optical tube with dual speed focuser, tube rings and carry handle


Made in Japan, the NA140SS is designed for outstanding visual observing in a large aperture refractor and replaces the earlier NA140SSf model.

Chromatic aberration of achromatic refractors increases as their aperture increases. This becomes especially apparent for achromatic refractors with short focal lengths (less than f/8) with apertures larger than 120mm. To compensate for this, Vixens superb Neo-Achromatic refractor has an additional two-element objective lens behind a primary 2-element objective lens, to give a bright image with excellent colour correction when compared to conventional achromatic refractors with the same aperture.

Spherical aberration and field curvature is less than 1/3 to 1/5 of standard doublet refractors with surprisingly high-end performance.

SPECS:

D=140mm F=800mm (f/5.7) - Neo Achromatic
Resolving Power 0.82 arc sec 12.5 mag
Tube Size & Weight: (OD)140mm x (L)1024mm, 6.5Kg
Includes:
Tube Rings (dovetail mounting plate is optional)
Dual Speed focuser
Compression ring visual back

Made in Japan

Best price depends on current exchange rate at the time of ordering.
**Note delivery is dependent on current stock but is typically 2-4 weeks from time of ordering**




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Price: $2,695.00Recommended Options
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