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Mars 20th Sept 2020 No L Filter

Image

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About this observation
Observer
Martin Lewis
Time of observation
20/09/2020 - 23:56
Object
Mars
Observing location
St.Albans, UK
Equipment
444mm Dobsonian
ASI224MC
NO L Filter
Tags

Mars data from earlier in the evening on 20th/21st Sept when I'd forgotten to add the UV/IR filter in front of the ASI224MC- camera for 10 videos!

Shows more dark albedo detail than RGB with L filter in place because significant IR adds in to each colour, but colours are odd & cloud at bottom not so nicely rendered as previous image. S.Polar cap ends up reddish too.

Interesting comparison anyway

Martin

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