With the favourable opposition of Vesta on June 1st this year, close to its minimum possible distance from the Earth (106 million miles) i took a series of images as well as observing visually. Observations were made from Barbados under excellent seeing conditions.
I also took a ganymede image and a nearby star all at the same focal length/filter configuration for comparsion. Vesta is definatly revealed as "not round" in shape and certainly not stellar in appearance. I could easily see this visually as well at high power. Ganymede for comparsion is 1.68" arc in apparent diameter.