Time-lapse photography of clouds and other phenomena in the sky

New Year fireworks show at Praha. Captured from a bridge in front of the National theater in Praha, Czech Republic.

Comet C/2011 L4 PanSTARRS  at dusk, setting into high cirrus clouds drifting from the west. Exposure of the individual source images 2s, ISO1250, F/4.8, f=50mm (equiv.), minor crop, processed from raw (DNG) files in Photoshop CS5. See also somewhat higher resolution (1920x1080) still images, taken at  18:16 a 18:21 UTC, and also the Meteosat-10 images from 18:15 UTC, showing the weather situation over Central Europe - standard black and white IR10.8 image and the "Night-microphysical RGB product" (for interpretation of colors in this RGB product see the EUMETSAT interpretation guide). Meteosat-10 images © 2013 EUMETSAT and CHMI. Comet images captured from Okrouhlík, south of Praha, central Bohemia, Czech Republic.

You can also check the appearance of this comet at much worse conditions, captured under bright, over-illuminated sky of Praha, one day before (2013-03-15) from Praha-Kačerov:  MP4, MOV or MPG format.

Large wave cloud with a horseshoe arch cloud.  The cloudiness which can be seen in this timelapse movie represents the northern edge of a large wave cloud, which formed just south of Praha - see the Meteosat-9 rapid scan loop ("24-hour microphysical sandwich" product), MOV or MP4. The red dot in the satellite loop indicates place and time from which and when the timelapse movie was taken. Meteosat-9 images © 2013 EUMETSAT and CHMI.  Captured from Observatoř Libuš, Praha, Czech Republic.

Besides the large-scale clouds themselves, notice also a nice horseshoe arch cloud (horseshoe vortex, ???), which formed almost at the end of the sequence, at its top left corner. The horseshoe cloud formation and evolution can be seen in detail here: MP4 (17 MB), MOV (7 MB) or MPG (21 MB). Interval between the individual images is the same as above, 5 seconds.

Shallow convection above Jizerka (district Jablonec nad Nisou), Jizerské Mts., north Bohemia (eastward view).

Jizerka and weak thunderstorm above western part of Krkonoše, as captured from Jizerka (district Jablonec nad Nisou), Jizerské Mts., north Bohemia (eastward view).

Wind shear (in meteorology change of wind speed and/or direction on relatively short distance, in this case with height). While the higher clouds flow to the north (in the movies to the right), the lower clouds drift more slowly eastward. Captured from vicinity o Lestkov (Radostná pod Kozákovem, district Semily; first sequence), and from vicinity of Trosky (Újezd pod Troskami, district Jičín; second sequence), northeast Bohemia, Czech Republic, westward views.

See also the MSG loop (5-minute rapid scan imagery), where the red dots indicate place and time of the two sequences shown above. Satellite data © 2013 CHMI and EUMETSAT.

Cirrus clouds at dawn at northeast sky. Top right constellation of Andromeda, left Perseus. Exposure of the individual source images 2s, ISO400, F/3.5, f=24mm (equiv.), minor crop, processed from raw (DNG) files in Photoshop CS5. Captured above former CHMI resort at Radostovice, district Tábor, south Bohemia, Czech Rep.

Storm above Praha.  Nothing exceptional, just plenty of intracloud flashes. Some of them nice, e.g. this one. Exposure of the individual source images 2s, ISO400, F/3.5, f=24mm (equiv.). Captured from Kačerov, Praha, Czech Republic, northward view.

Noctilucent clouds (NLC) above Praha. Exposure of the individual source images 2s, ISO200, F/4, f=35mm (equiv.). See also this still photo taken at the time of best visibility of this event. Captured from Kačerov, Praha, Czech Republic, northwest view.

Weak shelf cloud from Praha-Libuš.  Captured from CHMI Observatory Praha-Libuš, Czech Republic (south-west view).

Autumn colors.  For many years I have been charmed by color changes of the trees right in front of my CHMI office, changes which take a place every fall. This year I tried to capture these with my older Ricoh GX100, set to 10-minute interval, recording the scene for 37 days. From the final ("full") sequence I removed most of the night shots, and about one half of the days (when the weather was rather bad). The scene was captured from inside of my office window (see this photo), with the camera powered by external power adapter (AC-4c) from UPS. During the sequence I had to download several times the images from the camera to my laptop (via USB cable). The "short" version is a temporal, daytime only subset of the "full" version. Captured from Observatoř Libuš, Praha, Czech Republic, westward view. 

Morning fog above Observatoř Libuš. Captured from former CHMI radar tower at Praha Libuš, Czech Republic (south-east view).

Morning clouds above Praha.  Low and mid-level clouds, captured shortly after sunrise from the former radar tower of CHMI Observatory Praha-Libuš, Czech Republic (north-east view).

Convective clouds above Pretoria.  Low to mid-level convective clouds, captured from SAWS (South African Weather Service) in Pretoria, South Africa, south-east view.