Helene Image Products |
Helene Image Products |
Apr 4 2012, 08:11 AM
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#1
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Helene from distance ~7000 km. Date 18.6.2011. Red, green a blue (BL1) filter. Resolution is ~42 m/pix.
EDIT: I uploaded new version of the image without three prominent specks of noise. -------------------- |
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Apr 7 2012, 10:09 AM
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#2
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
"Beautiful"
"Wonderful!!!" "Great shot" Thanks! BTW, north is down in this view Good point, I forgot on any orientation corrections. ...there are not very many craters visible, but each one seems to be modified in a different way, depending on where it was located and (presumably) how old it is. It is questionable, if resolution of Helene's images (not only this one) is generally sufficient for clear distinguishing between age of smooth regions and age of "scratchy" surface. This "scratchy" surface looks like some kind of older, harder crust, but it is only my idea, because I don't know about any scientific paper about geology of Helene. -------------------- |
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Apr 9 2012, 05:27 PM
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#3
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
It is questionable, if resolution of Helene's images (not only this one) is generally sufficient for clear distinguishing between age of smooth regions and age of "scratchy" surface. This "scratchy" surface looks like some kind of older, harder crust, but it is only my idea, because I don't know about any scientific paper about geology of Helene. Exactly. I haven't seen work yet on crater counting on Helene (and between the different terrains) but the differences in the appearance between craters in the bedice and in the smoother, dust covered regions could be the result of either post impact modification or differences in initial target properties. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
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