What ship did they come on?

I am looking for the passenger list for my great-grandfather Jon Fredrickson Stjernegjerd who came to America in May of 1882. He was 45 years old at the time. He came with his wife Kari Lassesdatter Afet and three children, Marta, Guri, and Fredrick. They were from Vangsness, Sogn, Norway. Any help that you could give me would be appreciated. I do not know what port they would have left from--Bergen possibly? Thanks Betty Jean Ellingson Betty Jean Ellingson