DMC 2013 Jan 13 auroral observations in Sondrestrom, Greenland

Camera Configuration

parameter CCD sCMOS units
Exposure 0.02616 0.03 seconds
Kinetic Time 0.02711 0.03008434 seconds
Frame Rate 36.89 33.24 frames/sec
Sensor pixels 512x512 2560x2160 pixels
Binning 4x4 8x8 pixel grouping
output pixels 128x128 320x270 pixels
Optical Filter BG3 BG3  


The flickering lines in the CCD video are from LEDs in the camera room that were accidentally uncovered this night.

Extraction Commands used

Using we created the .h5 HDF5 files.

python ~/data/neo2013-01-13_X38_frames8300-9500.tif -o ~/data/cmos2013-01-14T1-15.h5 -s 2013-01-13T21:14:34Z -r 33.2398849368143 --cmos 480526 481726

python ~/data/2013-01-13T21-00-00.DMCdata -o ~/data/ccd2013-01-14T2-38.h5 -b 4 4 -s 2013-01-13T21:00:00Z -r 36.88675765400221320545 -t 2013-01-14T02:38:00Z 2013-01-14T03:00:00Z

python ~/data/2013-01-13T21-00-00.DMCdata -o ~/data/ccd2013-01-14T1-15.h5 -b 4 4 -s 2013-01-13T21:00:00Z -r 36.88675765400221320545 -t 2013-01-14T01:15:00Z 2013-01-14T01:17:00Z

Likewise for convenience we made a lossy compressed preview video ( > 50:1 compression)

python ~/data/ccd2013-01-14T2-38.h5 -o ~/data/ccd2013-01-14T2-38.ogv -c 1000 4000

python ~/data/cmos2013-01-14T1-15.h5 -o ~/data/cmos2013-01-14T1-15.ogv -c 10 4000

We didn’t make the Ogg Theora (.ogv) compression part of the main conversion program because some systems don’t have the proper compression algorithm installed. Virtually every device/computer will have the ability to playback these OGV videos, however, for example through VLC.



Written by Michael Hirsch, Ph.D. //