Optical polarimetric observations of the black hole binary star Cyg X-1 with RoboPol

The dataset contains raw FITS images of the black hole X-ray binary star Cyg X-1, raw FITS images of a nearby field star used for the interstellar polarization correction and processed measurements of polarimetric standards used for the instrumental polarization correction. The dataset was obtained with the RoboPol optical polarimeter in the R-band mounted at the 1.3 m telescope of the Skinakas Observatory, Greece. The data were collected between 13 May and 1 June 2022.<br>本数据集涵盖黑洞X射线双星天鹅座X-1（Cyg X-1）的原始FITS（Flexible Image Transport System）图像、用于星际偏振校正的邻近场星原始FITS图像，以及用于仪器偏振校正的偏振标准星的经处理测量数据。该数据集通过安装在希腊斯金纳卡斯天文台1.3米望远镜上的R波段RoboPol光学偏振计采集获得，数据采集时段为2022年5月13日至6月1日。