Auroral optical monitoring observation data at Syowa Station: Proton Auroral Imager 2 (PAI-2) data in 2019

Auroral optical observation data obtained with the Proton Auroral Imager 2 (PAI-2) at Syowa Station, Antarctica in 2019. Specifications of the PAI-2 are as follows: 1. Filter center wavelength: 480.5 nm | 2. Filter FWHM: 3.0 nm | 3. Camera: back illuminated cooled CCD camera (Hamamatsu C4742-98) | 4. Lens: Fisheye-Nikkor 16mm F2.8 | 5. Exposure: 7 sec | 6. Interval: 15 sec | 7. Original image resolution: 64x64 pixels, 12bit/pixel | 8. Original image format: TIF | 9. Quick Look image resolution: 720x480 | 10. Quick Look image format: JPG本数据集为2019年于南极昭和站（Syowa Station）使用质子极光成像仪2号（Proton Auroral Imager 2，PAI-2）获取的极光光学观测数据。PAI-2的技术规格如下： 1. 滤光片中心波长：480.5 nm（纳米） 2. 滤光片半高全宽（Full Width at Half Maximum, FWHM）：3.0 nm（纳米） 3. 相机：背照式制冷CCD相机（Hamamatsu C4742-98，滨松C4742-98） 4. 镜头：鱼眼尼克尔（Fisheye-Nikkor）16mm F2.8镜头 5. 曝光时长：7秒 6. 拍摄间隔：15秒 7. 原始图像分辨率：64×64像素，每像素12bit 8. 原始图像格式：TIF 9. 快速预览图像（Quick Look image）分辨率：720×480 10. 快速预览图像格式：JPG