Meteorite + Ion tail

Meteorite + its ion tail. This image is showing the difference between two consecutive frames of the same field (frame 2 - frame 1). On the second frame, a meteorite passed through the field, leaving a faint ion tail pushed by high atmosphere winds. See also simultaneous image with camera 2. Two bright satellites trails are also visible on this image. The faint small circular cloud above the meterorite is the Helix Nebula. Field of view is 10x15 deg, exposure time = 525 sec, acquired on 2011-10-28 UT.

Mauna Loa observatory laser

Image of the Mauna Loa laser beam near zenith. The bright green laser beam is visible in this image. The laser emission, due to scattering in the atmosphere, shows some high altitude clouds (bright vertical line near the end of the laser beam, visible in the top part of the beam). To the right, at the end of the beam, the laser gradually fades as the beam escapes the Earth's atmosphere and the associated scattering gradually decreases. Field of view is 3.5x2.1 deg, exposure time = 254 sec per frame, acquired on 2012-02-23 UT.

Image of the Mauna Loa laser beam near zenith, red channel. Some high altitude clouds visible (bright vertical line near the end of the laser beam). To the right, at the end of the beam, the laser gradually fades as the beam escapes the Earth's atmosphere and the associated scattering gradually decreases. Top: log scale, Bottom: linear scale. Field of view is 6x2.4 deg, Exposure time = 358 sec, acquired on 2012-02-23 UT.

Image of the Mauna Loa laser beam near zenith, acquired a few minutes after the previous image. The bright green laser beam is visible in this image. The laser emission, due to scattering in the atmosphere, shows some high altitude clouds (very bright spot at the end of the beam). Field of view is 10x15 deg, exposure time = 523 sec, acquired on 2012-02-23 UT.

The laser beam image shown above is saturated in the green channel, but not in the blue (left) and red (right) channels, where variations in scattering as a function of time and altitude are visible. Field of view is 10x15 deg, exposure time = 523 sec, acquired on 2012-02-23 UT.

Co-added images

M42 field

Antares field