The new Wide Field Survey Telescope(WFST),located on the summit of Saishiteng Mountain,Lenghu Town,Qinghai Province of China,officially went into operation on September 17th,and released its first-light image-a portra...
SN1997br is one of the supernovae discovered by the Beijing Observatory. The photo on the left is the image of the extragalaxy ESO 1318-2147 before the outbreak of the supernova and on the right is the image of the di...