Spectral classification (high resolution)

Spectral classification (high resolution)

Spectral classification (high resolution) Recommended equipment : Lhires III, eShel Durée : 1 night Introduction Low resolution spectroscopy allows to classify stars and measure their effective temperature. But this method is limited and hgih resolution spectroscopy...
Spectral classification (low resolution)

Spectral classification (low resolution)

Spectral classification (low resolution) Recommended equipment : Lhires III, Star Analyser, Alpy, LISA, eShel Time : 1 night Spectroscopy is a great tool to compare stars between themselves and determine their spectral class – thus their effective temperature....
Planet’s rotation

Planet’s rotation

Planet’s rotation Recommended equipment : Lhires III, eShel Time : one evening (acquisition), 4h (analysis in group) Introduction Doppler-Fizeau effect is particularly visible on Jupiter or Saturn spectra taken with Lhires III. One spectrum os Jupiter is enough...
Sodium in all its states !

Sodium in all its states !

Sodium in all its states ! Recommended equipment : Lhires III, eShel Time : 1h Sodium element has a nice spectral signature with two narrow lines in the yellow. Those lines, D1 & D2, are at wavelength 589.00nm and 589.59nm, split by about 6 angstroems only. You...
Atmospheric sodium

Atmospheric sodium

Atmospheric sodium Recommended equipment : Lhires III, Lisa , Alpy Time : about 1h  (at sunset) 80km above our head is an atmospheric layer with sodium excited by our Sun. During the day, it is not visible as the solar spectrum is too bright. During the night, this...
Solar spectrum (visual)

Solar spectrum (visual)

Solar spectrum (visual) Recommended equipment: Lhires III, Lhires Lite Time: 1h It works every time: anyone watching the solar spectra in hig resolution enjoy it -it is magical! and it’s easy: you just have to direct the Lhires III, without a telescope, directly...