Uranus Image 2023/02/16(UT)
Serge Dramonis
S.Dramonis
| Serge Dramonis | |
The conducted Polarimetry of Uranus is presented. Three positions of the polarization filter were used: -90°, -60°, -30° (Delta angle). It is optimal to use six or more positions. Considering that the position of the Delta angle equal to zero is not taken into account, can assume that the true numerical values for the polarization (P) tend to decrease from those given. Image processing algorithms (for polarization) were not used, as they non-linearly change the brightness of the image. Polarization is low near the center of the disc and high near the limb: The images show the pronounced polarization of the planet's limb, which is consistent with the Rayleigh scattering effect in the planet's atmosphere. Closer to the center, the polarization coefficient decreases significantly (up to 0.1%). The intensity profiles for two different chords are shown, as well as the polarization as a function of the Planet's radius.[Serge Dramonis : Athens,Greece]
 ALPO-Japan Latest
Uranus Section
2023/03/18
| 2023/02/14
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