Mars on August 28, 2018 (JDJ)

Contains: Solar system body or event

Mars on August 28, 2018

Imaged Mars on August 28, 2018 under good to excellent seeing and average transparency. Seems like all the best seeing is coming at the tail end of this Mars opposition, but I won't complain given that the global dust storm is now settling out and the views of surface features are greatly improving. On this night I made captures using Baader Moon & Skyglow, IR 685 nm pass, and UV-IR-cut filters. Using WinJUPOS, I de-rotated and combined 4 captures for each of the three filter types as well as all 12 captures. Combining the IR pass filter data with the RGB data resulted in an RGB image with improved detail. Comparison to the WinJUPOS ephemerides and the Sky and Telescope Mars profiler at the time of the 12 capture combined images shows that surface features on Mars have changed due to the global dust storm (as noted by many others). From the Mars Profiler, looks like the main feature in the center of the image is Mare Cimmerium with Syrtis Minor starting to show on the eastern (left) side of the image. The biggest difference is that there now appears to be an albedo feature between Mare Cimmerium (center of image) and Mare Sirenum on the western limb (right side of image) that does not show up in the WinJUPOS ephemerides & Mars Profiler.

Imaged with a C8 Evo, custom Siebert 2x barlow, ZWO ADC, Baader Moon & Skyglow/IR 685 nm pass/UV-IR cut filters, and ZWO ASI224MC. Imaging train was configured to give me ~F/25. Image capture using Firecapture. Stacking in AutoStakkert3. Wavelet sharpening in Registax 6. Image de-rotation and combining in WinJUPOS 10.3.10.

Solar System Imaging
Cloudy Nights

Mars

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