Specialist Footage Techniques  Our footage collection includes a
vast number of video clips shot using specialist techniques,
which although stunning in their own right, also give us insight
into what is otherwise not visible to the naked eye.  We have
more than 20,000 clips to choose from, with hundreds of new
submissions uploaded to the website each week.  Astronomical
Imaging footage uses sensors capable of detecting infrared or
ultraviolet radiation rather than visible light. Many
astrophysical processes are better seen at these wavelengths
when compared to visible light.  CT Scan uses a moving beam of
X-rays to generate numerous slice images of the body, which are
then combined by a computer to form a 2D or 3D model.  Earth
Observation Satellite Data – there are a huge array of
satellites orbiting the Earth, measuring everything from
temperature to sea surface height to plant cover to atmospheric
water content to pollutant levels.  Endoscopy footage uses a
standard camera attached to a thin flexible fibr