Search Publications

Photometric calibration and first results obtained with the UFT experiment on board the astron satellite

Petrov, P.; Hua, C. T.; Courtes, G. +7 more

The UV telescope of 30 cm diameter equipped with a three channel scanner spectrometer aboard the highly eccentric orbit space station ``ASTRON'' is described

Absolute calibration of the whole device is performed using spectra of standard stars, of which absolute values were obtained by TDI or IUE experiments. Several photometric controls have…

Space Telescope observations of aurorae on the giant planets

Caldwell, J.; Wagener, R.

For the distant giant planets, Uranus and Neptune, the observation of aurorae may be the best astronomical technique for the detection of planetary magnetic fields, with implications for the structure and composition of their interiors. Aurorae may be detected by emssion of H I Ly α (1216 Å) and by H₂ bands near 1600 Å. The latter are i…