I wanted to point out some noticeable changes on the surface of Mars that can be seen and imaged this opposition. To date, I have not seen any online descriptions of this event. (Special thanks to my friend Matin Gutekunst for notifying me!)
Prior to 2020, a bright gap existed between Mare Acidalium and Magaritfer Sinus; this is referred to as Oxia. Images taken in 2022 capture Oxia as having nearly the same brightness as Magaritfer Sinus. The same can be observed for the region South of Sinus Sabaeus called Regio Decaloins. At this time, this region has changed to dark brown color.
The following images show this phenomena very clearly:
1) an image from March 25, 2012 which was taken by Martin Gutekunst using a 24-inch Cassegrain (stopped down), and
2) an image I took on November 23, 2022 using a 500mm aperture f15.6 OTA and one of Martin's ADCs (ADC Compact).
Mars had a global sandstorm in 2018 and it seems afterward, the above albedo changes occurred. These changes can also be seen 2020 images of Damian Peach. Mars experts - please add your thoughts and comments!
Edited by mohawk195, 07 December 2022 - 08:53 AM.