A wide spectral range spectrum of Uranus planet (UVEX(3) on a RC10 telescope for a resolution power of R=1200 at 650 nm (300 lines/mm grating version) and CMOS ASI1600MM camera.
The acquisition is divided in two part : normal visible spectrum and IR spectrum (by adding an OG590 order filter). The spectra are merged in a second time. Here the comparison of Uranus spectrum vs a solar type star spectrum (HD 20630), taken the same night at nearly same elevation :
![Image](http://www.astrosurf.com/buil/UVEX3/_uranus_reflectance1.png)
and now the division of the two (i.e. relative albedo) :
![Image](http://www.astrosurf.com/buil/UVEX3/_uranus_reflectance2.png)
The covered spectral range is from 3670 A to 9800 A. For comparison, an albedo spectrum from Neff & all, Icarus 60, 221-235(1984) :
![Image](http://www.astrosurf.com/buil/UVEX3/_uranus_Neff.png)
The UV-blue noise is probably the consequence of some difference between the observed HD20630 and the true sun spectra. Here a detail of the blue region :
![Image](http://www.astrosurf.com/buil/UVEX3/_uranus_reflectance4.png)
Christian