Mars 5 Aug 2020 - 5 min stack (Seb Lukas)

Contains: Solar system body or event

Mars 5 Aug 2020 - 5 min stack

Acquisition type: Lucky imaging

Mars 5 Aug 2020 - 5 min stack

Acquisition type: Lucky imaging

Mars at dawn on Thu 6 Aug 2020 AEST.

Got up too late to catch Mars at its peak (transiting at 4:25am) but nevertheless managed to record one decent seeing period here. It's the first time I have used the ADC as Red Planet's altitude is now less than 50 degress from my location. Initially I've made five runs with TeleVue 2x Barlow but that proved to be too much sampling wise. Increased length of the imaging train means that I need to consider lower F ratios and may try F16 next time round.

This is a first of six stacks taken at native F10 between 6:13 and 6:38 am Canberra time. Conditions worsened as sunrise neared so I could not really use additional data for WinJ derotation. The view combines best 1200 frames over 4 minutes and has been resized 1.8x. It has been deconvolved in AstraImage with additional wavelets applied.

Even though the image scale is small a good amount of detail is visible around rapidly shrinking South Polar Cap. One detached chunk is setting right next to P limb (corresponding with the location of Mountains of Mitchel) and another has just crossed the CM. Albedo features appear murky in appearance indicating continuous presence of haze in the atmosphere. There's also a curved bright linear feature near a disk centre (a possible sign of dust filled tributaries of the Valles Marineris canyon).

The image is centered on Margaritifer Sinus with Chryse Planitia and Niliacus Lacus immediately to its north and Mare Erithreum to its south. Distinct tentacles of Aurorae Sinus are very prominent west of the CM.

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Mars 5 Aug 2020 - 5 min stack

Mars 5 Aug 2020 - 5 min stack

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