火星 ALPO-Japan Latest
Mars Image 2019/04/10(UT)
Stanislas Maksymowicz,Martin R Lewis
Here is a report of Mars of last 10th march performed with the 150mm refractor.
The main topic consists in the contrast level on the north hemisphere lower than usual.
Some brightenings were noted still on the limb.
With regards to the data collected since the 29th March,
the brightenings at final are not linked with the ground features (not turning with the planet).
I tried to respect at the possible the contrast scaling of the features seen on the disk.
Sinus meridiani was seen at the limit,Niliacus lacus too,mare erythraeum near eos too,
mare around argyre was the strongest clear collection of contrasty features.
Hazze at the south polar area,clear white cap at the north side with a boundary were noted.
Means the north hemisphere rather hazzy with mist,
thicker at the limb,well noted with the blue filter. My conclusion.
[Stanislas Maksymowicz Ecquevilly,France]
A breeze from the East and cold skies (radiative temp of -26C) was not expected to yield anything decent- but it always worth trying.
Mars at 4.5・in RGB and IR and just over 30ｰ alt.
[Martin R Lewis: Hertfordshire United Kingdom]