在用于测量从半空间或空间的电磁辐射，以交替地覆盖未来和释放一个或多个辐射探测器（D）和相关联的辐射透明盖（K）至所述一个或多个检测器（F）相对移动的调制器的装置（MO HZ）提供）（以一个或多个圆形弯曲中空半圆筒的形式，其可优选地附接（在可旋转的圆盘S的边缘）。 此外，在横截面中的半圆形弯曲中空半圆柱体（HZ）优选为半圆形，并且也可以在其内侧镜像或有密切的发射率。1 当使用这种调制器（MO）是所谓的与释放的相对于的该检测器的每个的整个半空间的或在两个检测器（D），其被布置在对准的辐射，例如向上和向下彼此径向相对，这些检测器 每个暴露于整个房间的辐射。 此外，盖的可访问性（K）是容易为了清洁的目的，和用于调制器的驱动装置（M）可以被容易地进行。 它特别有利的是多个测量用于检测出来的辐射装置可以以简单的方式来操作2π对应的半空间的立体角时，测量装置在不同的方向被定向。 也容易天顶附近辐射可以从与本发明的测量装置中的太阳来检测。

In a device for measuring the coming from the half-space or space electromagnetic radiation to alternately cover and release of one or more radiation detectors (D) and the associated radiation-transparent covers (K) one relative to the one or more detectors (D) movable modulator (MO ) provided in the form of one or more circular curved hollow half cylinder (HZ) which can be fastened preferably at the edge of a rotatable disc (S). Further, the semicircular bent hollow half cylinder (HZ) in cross-section are preferably semi-circular, and may also be mirrored on its inside or have an emissivity close to the first When using this modulator (MO) are so-with at the stage of release with a detector that each of the radiation of the entire half-space or with two detectors (D), which are diametrically aligned with each other, for example, up and down, these detectors each exposed to the radiation of the entire room. Furthermore, the accessibility of the cover (K) is easily for cleaning purposes, and the drive device (M) for the modulator can be carried out in a simple manner. It is particularly advantageous that in a simple manner several instruments for detecting from the solid angle 2π corresponding half-space radiation coming can operate when the instruments are aligned in different directions. Also can be detected from the sun with the measuring device according to the invention easily zenith near radiation.