Sunspot movement animation 21.6.2000 10:30 UT
Here is an animation where you can see two groups of sunspot
move on surface of the Sun. One spot group is on upper left corner and
an another on lower right corner.
Movement, which you can see on this
animation, is caused by Earth rotation and by telescope vibration.
The real Sunspot movement, which is caused by rotation of Sun and
fluid motions of Sun's surface are much slower.
Image diameter : 10 arc minutes
Image pixel size: 5 arc second
Animation duration: 13 second
Image interval: 1 second
Animation is obtained by Tuorla 10cm Newton telescope with 120x112 pix CMOS
camera and with aperture placed film Sunfilter. Images have been taken
with stationary telescope position, ie. without guiding and driving.
(Causes the motion.)
perkeina@utu.fi