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  1. #1
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    Default How To Find Straight Wall Moon Lunar Observing Rupe Erecta and Rima Brit



    Antonino thanks! Interesting that you mentioned it, every time the Straight Wall is available for viewing, I never fail to give it a close look, like just before taking the 3rd quarter Moon shot (viewed it with the HypZoom set to 10mm on the C8 or ~200x power); you've got eagle eyes to have detected it on the pic, but it's there alright (I think ).:



    Dramatic close up of the 134-km long Straight Wall (or the Sword) and crater Brit/Brit Rima on the left by Japan's Selene-1 lunar orbiter:


    Selene/JAXA

    Best,

    Hernando
    Last edited by ibase; 08-04-2010 at 02:00 AM.

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  3. #2
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    Rupe Erecta and Rima Brit (Birt, I think), right. I saw it because it stood out as a white line in your picture, and I have been looking for & at these intriguing lunar features since you first showed them 30 pages ago in this thread! Wow, what an astounding image from Selene-1!
    I'm fifth in line from OPT to receive the new Hyperion zoom, but it will take 2-3 more weeks they say.

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    Here's a map of the vicinity of the Straight Wall (Rupes Recta):



    It's #160 in the map and is in Mare Nubium. For reference, Tycho is #234 (although it's long bright radial octupus-like rays are not shown here). It is best to see the Straight Wall around the 1st or 3rd quarter of the moon when it is near the terminator, like at the time the 3rd-quarter Moon shot in the previous post was taken. Look for the small bright crater Brit, it's just beside this crater.

    It won't be long now from getting your Hyperion zoom, hope it gets fulfilled within the month.

    Best,

    Hernando
    Last edited by ibase; 08-04-2010 at 05:18 PM.

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    Quote Originally Posted by carnevali View Post
    ..Rima Brit.. looking for & at these intriguing lunar features since you first showed them 30 pages ago in this thread
    Re-visiting Rima Brit, the faint crack/rille which runs almost parallel to the Straight Wall



    Which is likened to a cobra snake with its head at the top end. Recent pic by LROC (Lunar Reconnaissance Orbiter Camera) shows an amazing closeup of the approx. kilometer-wide cobra "head":


    LROC/NASA/CSFC/ASU

    Looks like a tadpole head too or a male ejecta cell.

    Best,

    Hernando
    Last edited by ibase; 08-05-2010 at 04:38 AM.

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    "male ejecta cell," that's what it looked like to me at first sight. And with a Rupes "erecta" nearby it seemed to make perfect sense.
    Impressive image from the LRO. I should share in the pride a little bit, since our space science center recently helped calibrate the LRO radar system!

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    Quote Originally Posted by carnevali View Post
    "male ejecta cell," that's what it looked like to me at first sight. And with a Rupes "erecta" nearby it seemed to make perfect sense.
    lol They're just bashful not to call it THAT.

    Impressive image from the LRO. I should share in the pride a little bit, since our space science center recently helped calibrate the LRO radar system!
    Great, that sure is something to be proud of!

    Best,

    Hernando

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    When looking at images of the Straight Wall and the shadow it casts, it looks as if this fault (just like the San Andreas fault) is similar to a steep cliff but actually said to have a rather gradual slope of from 10 to 30 degree gradient going up it's height which can reach from 300 to 400 meters high. Here's a more recent image of a closer range from the Kugaya Image Gallery:


    JAXA/Selene/LPOD

    Hmm.. does seem a bit steeper than the 30-deg. max slope it is said to have.

    Best,

    Hernando
    Last edited by ibase; 08-05-2010 at 04:18 PM.

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    I'm ready for the climb! It would be wonderful to actually be there, alas it's so difficult and dangerous.

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    If it's just a 10-degree slope, count me in!

    Best,

    Hernando

 

 

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