His photos of the Ramones and other seminal ‘70s rockers are well known around town—an imposing portrait of Joey Ramone hangs permanently at Café Nine. Tonight, Hearn displays his photos of important bands, those from the local music scene and those who were just passing through. The exhibit, The Early Years of Punk in New Haven, opening 5 p.m. at Café Nine (250 State St.) in conjunction with tonight On9 festivities in the Ninth Square. The exhibit remains up at the club through April 7.