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  1. #1
    carnevali's Avatar
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    Default Interesting lunar feature (Hyginus)



    Had great observation plans last night, starting out with an early moon and proceeding with Jupiter and then galaxies. Clouds rolled in to cover what was a mostly clear sky, so I just got to see the Moon and Jupiter for about 20 minutes. Rima Hyginus stood out clearly because near the terminator. I had never sseen it before. It's really interesting, and you might want to give it a try if you have not seen it yet. I'll try to attach an image I googled: there is a chain of volcanic calderae inside the rille. I'm sure they are hard to see because small, but I'll try that next. The main volcanic crater, also called Hyginus, which cuts this winding rille in two parts, is clearly vixible. I used the 4.5" refractor and about 125x, but even smaller scopes would show it. It's found not far from Plinius, roughly in the direction to the moon center from Plinius, just before Mare Vaporum. In the two minutes I could look at Jupiter I spotted a darker area south of the equator, possibly the GRS? After that, cloud and rain drizzle. But at least I caught sight of something interesting that I hadn't seen before.
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    Carolgentle (11-14-2010)

  3. #2
    1127Tom's Avatar
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    Default

    That's pretty neat ^
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    Originally Posted by tglenn
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  4. #3
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    Thanks Antonino,

    Will look for that.

    Carol

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    Default

    Thanks for the great pic! I don,t know why some people,call the moon boring. Every time you look at it,you can see something different.

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    Default

    That's the old underground rail link that collapsed a few millenia ago. Fancy calling it a rille! It's a RAIL. D'oh!

    Actually that's fascinating - I will have a look for that - I've spotted a few rilles before and even photo'd one, but not clear enough to publish.
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  7. #6
    carnevali's Avatar
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    Default

    I tried to look at it again tonight but it was barely detectable, whereas last night it really stood out. That's because the terminator was close to it, and today it moved away from it. it makes a huge difference. I'm just realizing the obvious: to observe lunar features one needs to plan ahead of time and observe particular features when they occur near the terminator. Tonight the Rupes Recta cast a strong black shadow, so it was easy to spot. Later tonight or perhaps tomorrow the craterlets inside Plato should become visible, etc., to each feature its own time.

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    Antonino Carnevali
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