Hubble 3D has managed to create quite a ruckus in the entertainment world, and fans are as excited as they can get. The cinematographer astronaut Greg Johnson recently talked about the whole experience and filming of the movie which is all set to go down in history as one of the greatest productions of its times.

IMAX: Hubble 3D is a part of this week's South by Southwest festival, and gives viewers a taste of the riches of some of the most amazing footage ever taken of a NASA space exploration mission, which in this case was the Atlantis's journey which started last year from the Kennedy Space Center in Florida.

Johnson shares that while filming the movie was one of the greatest experiences of his life, he did have to face a few challenges, especially since he did not possess a lot of before-hand training about handling of a movie camera. Lighting has been designated by him as the biggest challenge, more-so because as you orbit the Earth, there is a sunrise and a sunset every 90 minutes.

Also, the crew did not want to shoot within 10 minutes of a sunrise or a sunset, which cut the filming time short even further.

"But the biggest challenge was deciding when the scene would actually start, because we're not directing the spacewalker to change out a rate-sensor unit. They do it per their timeline. We're supposed to just film it", Johnson shared.

Hubble 3D releases Friday, 19 March.