Final Approach, First good views of Victoria |
Final Approach, First good views of Victoria |
Sep 19 2006, 04:03 PM
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#1
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Well, what does everyone think of our long-awaited first view..?
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Sep 19 2006, 08:52 PM
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#2
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Senior Member Group: Members Posts: 4252 Joined: 17-January 05 Member No.: 152 |
It's very easy to match even the tiniest details between todays navcams and the orbital images. Look at this comparison, for example, centred on the largest "bay" feature on the far rim:
You can identify many small features on the slope of the "bay". In fact, we can now do a very firm measurement of the slope of that "bay". I've identified a feature at the top of the bay on both images (green arrow) and a feature some distance down (red arrow). The orbital map gives about 46 metres horizontal separation between the two, and today's navcam gives 13.6 metres vertical separation. Highschool trig gives an average slope of just 16.5 degrees! Again, this is an average slope - there could be steeper and less steep portions of the bay. But, gall darn it, 16.5 degrees sounds totally doable! Edit: forgot to mention that navcam crop is 2x vertical stretched. The calculated result was correct, though. |
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