SIGHTRON SI 525 SWA-II
SIGHTRON S1 Series 5x 25mm Aperture
The SI 525 SWA-II features a fully multi-coated lens, providing a bright and clear field of view. Its exceptional brightness makes it ideal for star watching, as well as fast-moving sports, theater, and concerts. With a minimum focusing distance of 2m, it can also be used indoors for close-up viewing.
・Achieves an astonishingly wide apparent field of view of 15° (apparent field of view: 66.7°)*.
・Fully multi-coated lenses ensure exceptional brightness.
・The large focusing ring offers excellent operability, even when wearing gloves.
・Features a flat glass element for dust protection on the objective lens.
・A minimum focusing distance of 2m allows for close-up use, such as indoors.
・Compact body provides a good grip.
・Adopts an elastomer exterior for a comfortable feel in the hand.
・Twist-up eyecups make it easy to use even when wearing glasses.
*Calculated according to new JIS standard (JIS B7121:2007). Apparent field of view is 75° according to old JIS standard (JIS B7121:1993).
【Main Specifications】
・Magnification: 5x
・Objective lens: 25mm
・Prism: Roof prism
・Coating: Fully multi-coated
・Actual field of view: 15°*
・Exit pupil: 4.8mm
・Brightness: 23
・Eye relief: 13.8mm
・Minimum focusing distance: 2m
・Weight: Approx. 572g (including objective and eyepiece caps)
・Size (mm): 118 x 50 x 132
・Accessories: Case, strap, lens cloth, objective lens caps, eyepiece caps
*Calculated according to new JIS standard (JIS B7121:2007). Apparent field of view is 75° according to old JIS standard (JIS B7121:1993).
