[meteorite-list] GIANT Lunar Download

From: lebofsky at lpl.arizona.edu <lebofsky_at_meteoritecentral.com>
Date: Fri, 4 Mar 2011 11:24:10 -0700 (MST)
Message-ID: <613ec2eff6b67d48b60fe7a0698b8f3b.squirrel_at_webmail.lpl.arizona.edu>

It took me less than 10 minutes and you will be limited by how fast your
Internet provider download rate is (not what they claim).

Great image.

Larry

> I downloaded it last week and on Roadrunner it took <5 mins!!
>
> STuart.
>
> ---- Pete Pete <rsvp321 at hotmail.com> wrote:
>>
>> Hi, all,
>>
>> I suggest not trying to download unless you aren't needing your computer
>> for a while.
>> My computer is new, and it took about fifteen minutes.
>>
>> I think it is worth the time, if you appreciate our little buddy.
>>
>> Cheers,
>> Pete
>>
>>
>> http://www.skyandtelescope.com/news/116932598.html
>> http://www.skyandtelescope.com/news/116932598.html
>>
>>
>> A Half-Gigabyte View of the Moon
>>
>>
>> Ever since NASA's Lunar Reconnaissance Orbiter began circling the Moon
>> at low altitude in mid-2009, planetary scientists and the public have
>> marveled at the incredible trove of observations it's been beaming back
>> to Earth. Most often in the spotlight are the jaw-dropping closeups of
>> Apollo landing sites by the Lunar Reconnaissance Orbiter Camera (LROC).
>> It can resolve the surface at 2 feet (0.5 m) per pixel ??? good enough
>> to reveal even the paths worn in the lunar soil by the astronauts'
>> boots.
>>
>> A new 24,000-pixel-square mosaic from NASA's Lunar Reconnaissance
>> Orbiter shows the Moon's nearside as never before. Click here for a
>> larger (but not full-size!) version; a labeled version is here.
>> NASA / GSFC / Arizona State Univ.The work of LROC's wide-angle camera,
>> which provides surface context for those incredible narrow-angle shots,
>> has largely gone unheralded ??? until now. This past week the team
>> released a new mosaic of the Moon's near side taken entirely with
>> wide-angle frames. Acquired during a two-week period in December, the
>> 1,300 black-and-white frames create a full-disk mosaic measuring 24,000
>> pixels across. Gulp!
>> "As the Moon rotated under LRO's orbit," explains LROC team leader Mark
>> Robinson (Arizona State University), "the ground track progressed from
>> east to west (right to left in this mosaic)." The image run was timed to
>> keep the Sun high up in the lunar sky but not straight overhead (its
>> altitude varied from 69?? to 82??). This created enough shadowing to
>> define crater rims and other topography crisply, unlike the shadow-free
>> view that we see during a full Moon. The combined image shows slight
>> banding where the 1,024-pixel-wide swaths were stitched together.
>>
>> A close-up of Rupes Recta (usually called the Straight Wall) from the
>> new LROC mosaic of the lunar nearside. Located near the eastern edge of
>> Mare Nubium, this steep-faced scarp is about 70 miles (114 km) long.
>> NASA / GSFC / Arizona State Univ.Weighing in at just 2 pounds (0.9 kg),
>> LROC's wide-angle camera is small enough to fit in your hand. It
>> features an aperture only 1.2 mm across and a focal length of just 6 mm
>> (for visible-light work). Yet from LRO's very low orbit, currently only
>> 20 miles (30 km) up, this mighty mite can pick out surface details as
>> small as 250 feet (75 m). Click here to view the specifications for
>> LROC's wide- and narrow-angle cameras.
>> The image looks dark because Robinson and his team have kept the Moon as
>> it really is: dark. On average, the lunar surface reflects only about
>> 12% of the sunlight that strikes it. So a full Moon really isn't
>> dazzlingly bright ??? it only looks that way to our eyes because of the
>> contrast with the black sky around it.
>> If your computer's up to it, you can download the full half-gigabyte
>> mosaic here.
>>
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>
> --
> Stuart McDaniel
> Lawndale, NC
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Received on Fri 04 Mar 2011 01:24:10 PM PST