Super Moon

Discussion in 'Nature & Wildlife' started by jtee, Mar 19, 2011.

  1. jtee

    jtee TPF Noob!

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    Next time that the Moon is this bright and large will be 2029. This moon is 14% Larger and 30% Brighter .


    [​IMG]
     
  2. molested_cow

    molested_cow No longer a newbie, moving up!

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    But but we can't really put both of them side by side for comparison!
     
  3. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    "14% larger"?

    I call shenanigans on this. The moon's orbit is ellipitcal, varying between 363,104 and 405,696 km. That's 11.7% at best, and only a paltry 5.8% from it's semi-major axis (average distance).

    "30% brighter"?

    How? It's still 150,000 km from it's source of illumination.... the sun. Earth does not illuminate a full moon. It can't because it's facing the night side of the planet. If anything, it's brighter during the phase we call New Moon, because it's closer to the sun then.

    I hate raining on your parade, but them's the facts.
     
  4. jtee

    jtee TPF Noob!

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    LMAO not raining on my parade ....I am just repeating what our local weather lady said .I will leave the tecky stuff alone and let the geek squad do their thing.
     
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  5. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    Seems your weather lady doesn't consider herself a professional and doesn't bother checking the facts like the news reporters do. My guess is she simply parroted some email that spreads like wildfire during these types of events. I'm sure there's also some nut-case cults that will consider tonight the apocalypse.
     
  6. ishafizan

    ishafizan TPF Noob!

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  7. Snakeguy101

    Snakeguy101 TPF Noob!

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    Actually, it is 0% larger and 0% brighter. The mass of the moon is not changing, it is not like it is colliding with an asteroid 30% the size of the moon and it also does not produce any light so it is never bright to begin with.

    It may appear 14% larger and 30% brighter though. Those numbers were given out by NOAA so I am gonna stick with their calculations on this one. ;-)
     
  8. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    The mass of the moon has nothing to do with it. I'm sure the 'larger' reference is to the angular size of the moon as it appears to an earth-bound observer, and the 'brighter' simply means that since it looks larger, then one can assume it's brighter. But it's not.

    To prove this, go out and take a photo of your car on a sunny cloudless day as close as you can and still get the entire vehicle in the frame. Use your widest angle lens. Now note the exposure (ISO, shutter speed, & aperture) needed to produce a nice pix.

    Now walk across the street and take another photo. Is your car any 'darker'? Do you need to bump up the ISO, open the aperture, or slow down the shutter? No. Is your car any smaller? No, you can still fit into it... it's not one of those toy cars the Shriners drive the parades all of a sudden.

    Walk down the block as far as you can and take another photo. Do you need to adjust any of those settings simply because you're 100 feet away? No. Can you sell it on ebay as a Matchbox? Hardly.

    If I was one the moon with a tele lens with enough power to pick your car up where it sits, MY exposure of your car would be exactly the same as yours when you're 10 feet from it.

    Fact is, when the astronauts were walking around on the surface of the moon, they used the same EV we would shooting it from here. If getting closer to the moon somehow makes it brighter, then all the astronauts who made the trip there (26 by my count) would have been rendered blind.
     
  9. Snakeguy101

    Snakeguy101 TPF Noob!

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    I never said that size and brightness were related. I was kidding in that post anyways. No need to get combative.
     
  10. jtee

    jtee TPF Noob!

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    :thumbup:
     
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  11. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    Not being combative.. just trying to pass along the truth. I don't want everyone to rush out tonight thinking the moon's gonna somehow be magical and take up half the sky.
     
  12. LaFoto

    LaFoto Just Corinna in real life Staff Member Supporting Member

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    No, actually he/she/it looks like normal.

    [​IMG]

    I'll have to wait and see in how far it may affect my sleep tonight - on the way it does every time when the moon is full!!??
     
  13. Miladymimi

    Miladymimi TPF Noob!

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    It was a beautiful moon, but not markedly different. It was bright orange just as it was rising, that was interesting.

    [​IMG]
     
  14. chito beach

    chito beach TPF Noob!

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    [​IMG]

    Mijne from last night shot through some Haze causing the tinge of color
     
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  15. PhotoWrangler

    PhotoWrangler No longer a newbie, moving up!

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    Classic case of all the book sense... and no common.


    Will it be the same, or nearly the same tonight?
     

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