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Examples: 19.8.2016: cloud punch hole, 22.9.2016: Halo, stereo images, ...
Images made every 20sec with an AXIS M3027-PVE Fixed Dome Network Camera,
for details see this page.
This is an 800x600 30% compression JPG image. For a maximum resolution image see here
See also ...
Cloudmask made with idl. Click on image to see full sequence.
Exposure Time 1/12000sec (left) and 1/23sec (right), click on image to see full range of exposure times.
Gain 9dB (left) and 42dB (right), click onimage to see full range of Gains.
Gain is the amplification factor used to digitize the CCD measurements.
IR filter Off (left) and On (right), click on image to compare.
CCD are relative sensitive in the near IR spectral range. To ensure good color representaion usually an IR-filter is used.
This camera has the possibility to move the IR-filter away (mechanically) which leads to higher sensitivity.
Every row in this image represents a horizontal line through an oringal image from a certain time in 20sec distance.