Re: Another parallax question
Mon, 21 Apr 2008 19:05:32 -0400
"OG" wrote in message news:674favF2mm357U1@mid.individual.net...
>
> "Robert" wrote in message
> news:480cfe9e$0$15161$607ed4bc@cv.net...
>> This one involving magnitude:
>>
>> If a star has a parallax of 0.1 seconds of arc, and an apparent magnitude
>> of 3, what is its absolute magnitude? Apparently the an ...
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Re: Lunar images from the first half of April
Mon, 21 Apr 2008 23:43:36 +0100
http://www.digitalsky.org.uk/lunar/2008-04-08_19-38-43_Red_Flat_50pcnt.jpg
The composite is particularly aesthetically satisfying, I thought; not just
the sharpness, but the way the terminator is tangential to several large
craters, also the shading through the very big one (sorry, ought to know
what it is!)
...
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Re: Another parallax question
Mon, 21 Apr 2008 23:30:41 +0100
Robert wrote:
> This one involving magnitude:
>
> If a star has a parallax of 0.1 seconds of arc, and an apparent magnitude of
> 3, what is its absolute magnitude? Apparently the answer is 3, but I have
> no idea why. Can anyone show the simple work?
Its worth remembering that usenet and www are not a goo ...
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multiscale methods
Mon, 11 Feb 2008 04:09:33 -0800 (PST)
Dear all,
This is a friendly reminder that we still accept manuscript
submissions to
the Statistica Sinica theme topic on multiscale methods up until the
end of
February, 2008. Please refer to http://www.stat.sinica.edu.tw/statistica/
for more information.
With all the best,
-- Michelle Liou, Co-editor
-- ...
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ASTRO Pairs of Asteroids - December 19th 2007
Mon, 11 Feb 2008 03:18:05 -0800 (PST)
Pairs of Asteroids - December 19th 2007
#269 Justitia at 2.3072 AU (345.2 million km) at magnitude 14.5 plus
#882 Swetlana 2.0902 at AU (312.7 million km) at magnitude 15.2
http://www.martin-nicholson.info/1236/1236.htm
Martin Nicholson, Daventry, England.
My website is at http://www.martin-nicholson.i ...
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The NGC Ten Minute Challenge
Sun, 10 Feb 2008 01:48:27 -0800 (PST)
The NGC Ten Minute Challenge
NGC 3628 - Galaxy in Leo
NGC 3628 forms the "Leo Triplet" with M65 and M66. NGC 3628 is seen
edge-on with a broad band of dust hiding most of the spiral arms. The
dust band is clearly distorted by the gravitational interaction with
its two bright neighbours.
http://www.martin-n ...
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ASTRO Our nearest neighbours - ROSS 128
Sun, 10 Feb 2008 01:47:48 -0800 (PST)
Our nearest neighbours - ROSS 128
ROSS 128, sometimes called FI VIR - Currently in 11th place
This is a M4.0 dwarf star at a distance of 10.9 light years. Due to
this stars proximity to us it has been selected as a target star for
NASA's optical Space Interferometry Mission that aims to detect a
planet as sma ...
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Re: 03:44.
Sat, 9 Feb 2008 21:53:02 -0800 (PST)
On Feb 10, 12:15 am, Weatherlawyer <Weatherlaw...@hotmail.com> wrote:
>
> This seems to illustrate what I mean, though the clouds are hardly sea level:
> http://www.ssec.wisc.edu/data/comp/cmoll/cmoll.html
Not for dial-up and even with BB it may take a minute to load.
Use the stop and back buttons to locate ...
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ASTRO Images of Saturn (1) - Spotting the Shepherd Moon
Sat, 9 Feb 2008 03:02:41 -0800 (PST)
Images of Saturn (1) - Spotting the Shepherd Moon
Across the darkened expanse of Saturn's rings, the Cassini spacecraft
spies one of the F-ring shepherd moons.
Pandora (84 kilometers, or 52 miles across) orbits Saturn just beyond
the outer edges of the F ring. Close to the planet, the image of the
rings is sl ...
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Stephen Hawking inhales on a helium balloon
Sat, 09 Feb 2008 01:08:34 GMT
Stephen Hawking inhales on a helium balloon, then details what happened
prior to the Big Bang.
http://www.youtube.com/watch?v=3JN96aQo14s
David Mills
http://www.DavidMills.Net
http://www.myspace.com/atheistuniverse
http://www.youtube.com/davidamills
http://www.facebook.com/people/David_Mills/617392886
...
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