天王星 ALPO-Japan Latest
Uranus Image 2018/02/14(UT)
For the fun, a report for Uranus performed with the excellent 90mm refractor F11.
Indeed albedo levels are considerably increased for the issue in order to show the disymetry of the albedo difference between hemispheres.
Magnifications in use were mainly 200x and 250x, 270x for the verification of the pattern.
Images were perfect.
Means the light difference is not so confidential in IL lights on the 3.44" disk size.
The doublet for the exercise needs to be perfectly settled, aligned and collimated.
Nothing to say more.
[Stanislas Maksymowicz Ecquevilly,France]