In astrography, Nikon, Canon, Sony mirrorless cameras have been used more and more frequently by astronomy amateurs in recent years. Therefore, on the basis of the DSLR camera adapters，Sharpstar have introduced camera adapters suitable for Nikon Z, Canon R and Sony E mirrorless cameras. As the rear side of telescopes and other astronomical accessories are increasingly designed with male threads, there is an increasing demand for camera adapters with female threads. Therefore, we have launched this M54/M48 camera adapter with female threads for Nikon, Canon, and Sony mirrorless cameras.