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Contains:  Solar system body or event
Mars 27 Feb 2020 - 8 min WinJ Composite, 



    
        

            Seb Lukas

Mars 27 Feb 2020 - 8 min WinJ Composite

Acquisition type: Lucky imaging

Technical card


Date:Feb. 27, 2020

Time: 20:15

Frames: 10863

FPS: 85.00000

Focal length: 9144

CMI: 146.60

Seeing: 3

Transparency: 7


Resolution: 1047x898

Locations: Gungahlin, Canberra, Australian Capital Territory, Australia

Data source: Backyard

Description

Mars at dawn on 28 Feb 2020 AEST, first light this season.

Got up shortly before 5am and was greeted by light wind and cool conditions. Immediately I slew to dim Mars having the rig already set up and aligned the night before. I have decided to oversample and imaged 5 second disk at F30 for two hours. The seeing improved as the planet rose but transparency remained variable with high level wispy cirrus around. Overall conditions were fair at best.

Despite derotating four 240 second stacks detail remains elusive in this view of Mars' volcano hemisphere. There's some structure in dark Mare Sirenum and South Polar Cap is nearly at its maximum (peak of southern winter). Tharsis ridge and Olympus Mons are not noticeable which I now think is partly due to my FireCapture settings (slightly underexposed video), had better luck couple of days later after fine tuning exposure and gain.

Comments

Author

Seb
Seb Lukas
License: Attribution-NonCommercial-NoDerivs Creative Commons
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Mars 27 Feb 2020 - 8 min WinJ Composite, 



    
        

            Seb Lukas