More Mars?? Help!!

I have noticed - that there are some members here - that are quite adept at identifying photo aspects that are unfamiliar to the layman observer.

While reviewing an image of Mars 'Crater Dunefield' - I found a small section ( of a very large file ) that showed a series of concentric circles - that surely cannot be a natural phenomenon. Not claiming anything 'anomolous' here - but asking for experienced people to identify the source of this 'marking.' Can you reference other examples?? Personally, I have not seen this before.

please view -

Circles on Mars??


Greatly appreciate your expertise.

jb
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probably the lenses of the satelite... or some manipulation....

It may be a seal embossed on the reverse side of the photo.

Sample seal.




Source

[edit on 31/1/08 by Rhain]

I was thinking possibly 'watermark' - but it is a digital image... and not sure if there is a 'backside' to have been 'stamped with a seal' though.

FB.. have considered the possible 'filter artifact' - but perfect concentric circles is highly unlikely.

'Lens' is possible, but the image area in question fits perfectly into the shape of the manifestation.


Great input. I am sure that someone here will exact the example.

Thank you in advance.

jb
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Image has been explained... to my satisfaction. I greatly appreciate your participation. Page is coming down now.

Thanks so very much. Very studious group here, I must say.

jb

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That page has been removed. Sorry for the inconvenience - if you did not notice this post.

jb

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