The following is a list of stars whose images have been resolved beyond a point source. Aside from the Sun, stars are tremendously small in apparent size, requiring the use of special high-resolution equipment to image. For example, the first star, other than the Sun, to be directly imaged was Betelgeuse. It has an angular diameter of only 50 milliarcseconds (mas).
List
An incomplete list is as follows:
References
List of stars with resolved images Wikipedia(Text) CC BY-SA