1、Quick Calibration: This astronomical telescope heliostat uses the natural rays of natural light to quickly calibrate the position of the sun. 2、Cross Observation Differentiation Plate: This heliostat has an creamy white cross observation differentiation plate for clear observation of solar rays. 3、Eye Protection: This astronomical heliostat solves the danger of eye injury and blindness caused by the wrong use of the finder by the observer. 4、Anodized Treatment: This viewing sun aid accessory features an all metal premium anodized aluminum tube, which is premium and durable. 5、Suitable for Beginners: This telescope heliostat is easy to use, and beginners can learn it quickly, which solves the problem of inexperienced observers and unable to quickly align with the sun. 1 x Heliostat Item Type: Astronomical Telescope HeliostatMaterial: Aluminum AlloyGross Weight: 125g / 4.4oz