|
Date + Time
............................... 1 / 4/ 2012 - 18:10 UTC
Location .................................... Skiathos
Optics .........................................
Canon
EFS 18-200mm (working at 18mm)
Camera .....................................
Canon Eos 50D
Exposure Time........................ 15 sec / ISO
2000
Mount ....................................... portable
tripod
Processing Details ................. Star trails - Maxim
dl - Photoshop
Details .....................................
58 frames used.
You can also see an aeroplane crossing the image , and a
satelite (upper right).
Star trail is the line of
light
recorded on a
photographic
medium
when a
time exposure is made of a star in the
nighttime
sky
using a
camera
on a
fixed
mount,
caused by the
rotation of the
earth
during the period of time when the camera's
shutter is held open. |
