When filming a documentary about a telescope that runs 43.5 feet in length, you might want to use the biggest cameras around, which is exactly what director/producer and IMAX veteran Toni Myers did for Hubble 3D. The film follows the crew of the STS-125 shuttle flight, including astronaut Michael Massimino, as they went on their final mission to service and repair the Hubble Space Telescope.

Myers and Massimino sat down with Cinematical just before the film's world premiere at this year's South by Southwest Film Festival to discuss the awe of spacewalks, the perils of looming budget cuts and the ever frustrating practicality of going to the bathroom in zero gravity.

As narrated by Leonardo DiCaprio, Hubble 3D opens on more than forty screens this Friday and will expand its release in coming months.

Download the interview (15 mins.) by clicking here