Increase Max Camera Angle?

Hello.

Anyone have an idea of how I can increase the max Y angle that the player can turn their camera? So they can spin their camera 360 degrees? I'm working on a space exploration game, and I want the player to be able to fly straight upwards in space, or turn their camera over 80º on the Y (currently the default). I've done tons of research and have found nothing. So if anyone has any ideas, please tell them.

Thanks people!