| 摘要 |
A polar calibration system (100), comprising: a polar lens (10), a polar calibration control device (20), and a display device (30). The polar lens comprises an optical lens (11) and an image sensor (12) used for collecting images (IM) of a celestial region; the polar calibration control device receives an image of a celestial region from the polar lens and determines on the basis of said image the positions of the central axis of polar rotation (P1) and of the celestial pole (P2), the central axis of polar rotation expressing the position on the plane of the celestial region image of the axis of rotation (R0) of the polar axis (510) of the equatorial mount, and the position of the celestial pole expressing the position of same on the plane of the celestial region image. The display device is connected to the polar calibration control device and displays celestial region images, the position of the celestial pole and the position of the axial center of polar rotation. Also provided are a polar lens and a polar calibration control device, and an equatorial mount (500) and astronomical telescope comprising same. The position of the celestial pole can be directly aligned with the polar axis of rotation, improving calibration precision and reducing the requirements of precision for fitting a polar lens. |
