Colour magnitude diagram of open cluster M6, M16 And M23 / Rosnani Rahman

This study entitled colour magnitude diagram of open cluster M6, M16 And M23 was constructed and analyzed colour magnitude diagram for three open clusters Ml6, M6 and M23. These three open clusters were determined their right ascension and declination by using Planetarium Sky6 software. The observation for this project was done in Langkawi National Observatory by using robotic 50cmRC Carbon Truss Ritchey-Chretien Telescope and the stellar images were captured by using STL 100IX SBIG CCD Camera. The images were processed and analyzed by using AIP4WIN software and by applying the technique of aperture photometry. From the colour magnitude diagram, the temperature condition of member stars of open cluster Ml 6, M6 and M23 were determined. Besides, the stellar evolution such as main sequence stars and giant stars were recognized.