[meteorite-list] GIANT Lunar Download

From: Sterling K. Webb <sterling_k_webb_at_meteoritecentral.com>
Date: Fri, 4 Mar 2011 14:17:18 -0600
Message-ID: <F6C22329F28B473BB867869DF891167E_at_ATARIENGINE2>

As a passionate downloader with archives of
downloaded material that exceed a total of
three terabytes (but growing every day), I can
tell you that speed at which you receive data
is affected by a variety of factors of which ISP
willingness is only one.

I know the maximum rate my provider can
and does supply me with, having done so
consistently when allowed by the source, a
hair under 4 Megabit/s (636 Kb/s). This
download would take 14.7 minutes at that
rate, but it's going to take (still downloading)
about 48 minutes.

Servers always parcel out downloads in a way
to optimize their own performance to the demand
and the nature of the requestor. For example,
if I were the server at asu.edu, I would see to
it that a requestor at lpl.arizona.edu got it as
fast as he wanted it, like say, 1000 Kb/s or so.
They correctly appraised that I was only worth
193 Kb/s... and they were right!

And Pete, you can (or should be able to) use
the computer for all other tasks (except a
competing giant download). You don't have
to suddenly become a "single-tasker" when
downloading.

Beautiful, isn't she? Those who don't want a
giant download and would be satisfied with a
good-sized jpeg under one Mb, can find it at:
http://apod.nasa.gov/apod/ap110303.html


Sterling K. Webb
------------------------------------------------------------
----- Original Message -----
From: <lebofsky at lpl.arizona.edu>
To: <actionshooting at carolina.rr.com>
Cc: "meteoritelist meteoritelist" <meteorite-list at meteoritecentral.com>
Sent: Friday, March 04, 2011 12:24 PM
Subject: Re: [meteorite-list] GIANT Lunar Download


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.
>>
>> ______________________________________________
>> Visit the Archives at
>> http://www.meteoritecentral.com/mailing-list-archives.html
>> Meteorite-list mailing list
>> Meteorite-list at meteoritecentral.com
>> http://six.pairlist.net/mailman/listinfo/meteorite-list
>
> --
> Stuart McDaniel
> Lawndale, NC
> ______________________________________________
> Visit the Archives at
> http://www.meteoritecentral.com/mailing-list-archives.html
> Meteorite-list mailing list
> Meteorite-list at meteoritecentral.com
> http://six.pairlist.net/mailman/listinfo/meteorite-list
>


______________________________________________
Visit the Archives at
http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list at meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list
Received on Fri 04 Mar 2011 03:17:18 PM PST