Newsgroup: it.discussioni.ufo
Titolo: Meteosat Ufo

Mi sapete spiegare perche' questa e' una bufalata ??
http://www.anomalies.net/sats/meteosat/
--
 
Http://www.salvy.nigro.com

          
Http://www.salvy.nigro.com
Ancora Joshy...
Che  c******          ...cosa vuoi?
Siamo tutt'orecchi!
XAS

          
Http://www.salvy.nigro.com
Joshy vuoi forse convincerci che oggetti provenienti da altri mondi e/o
tempo e/o dimensioni
(non U.F.O. quelli esistono, si sà già! Sono solo oggetti volanti non
identificati... con la mia ignoranza li vedo tutti i giorni o quasi!)
visitano la terra ed esistono?
Perdi tempo, la maggior parte delle persone che frequentano questo NG
ne sono già convinti. Diverso è indagare su certi fenomeni...

 wrote in message
news:7l3iol$h22$1...@black.news.nacamar.net...



http://www.anomalies.net/sats/meteosat/
Ecco di seguito un'esauriente risposta tratta da Ufomind.
Tieni conto che il diffusore della notizia e' Adriano Forgione della
redazione di UFO Network da cui presino il CUN ha preso le distanze.
E ho detto tutto...
******
I would be _very_ wary of taking this image seriously.
As part of our teaching program here at the Univ we have a
'simple' MeteoSat receiving station which takes the down-link of
the European weather sats, so I know a little of the processes
involved.
Firstly as has been said the image shows an Infrared Image, the
sensors in the Meteosat birds gather data in three part of the
spectrum, visible and 2 areas in the infrared one to show cloud
cover in night areas and the other sensitive to water vapour,
the infrared images are around half the resolution of the
visible light images.
The satellites _don't_ use a camera!, they use a scanning
radiometer, a rotating mechanical sensor which scans a 'slice'
of 'earth-disk' and can pan up and down to scan the whole earth
disk in the 3 channels together producing an (from memory) 8k x
8k data set of triplets of numbers which are down-linked in
real-time, in Europe's case, to the control site in Germany,
where this raw data is stripped into it's individual image
channels and all the nice fancy bits like country outlines are
added and the _distribution_versions_ of the data are prepared.
These pre-prepared images, nicely annotated are then up-linked
back to the satellite which transmits them back down on approx
1200mhz for use by end-user sites (your local TV weathermen and
amateurs alike). The guy who allegedly received the image,
would have got it at this point in the chain. All the data
coming down from the Euro Meteosats is archived in Germany on
mag-tape and can be accessed. I assume the same goes for the US
control site (Greenbank VA?) as this image came from the period
after Meteosat 3 was moved in orbit to over the Americas to
stand in for a US Sat that failed and it's replacement was still
being prepared for orbit. It was part of the distribution
schedule for the European sats to relay the US data, I assume
the US birds did the same with the European data, they also
relay the data from the sats over Australia.
The point here to consider is, it wasn't a _camera_ that took
this image. The satellite doesn't go 'snap' every so often to
get its image. It scans one slice of 'earth disc' at a time,
like you build up a TV picture a line at a time, and this
process takes quite a time to scan the whole earth. So that
little 'disc' in the image would have to hold _exact_ position
_and_ orientation for a while to have a nice sharp image like
the one shown!, not and easy task for a body in orbit. To be
honest I'd be more convinced if it actually had ragged edges
indicating movement between scan lines.
To me it looks like a 'joke' image (see closing note below) but
you could always ask NOAA for the original data set as you have
the time and date stamp. You might also find a University in the
US who also archives the distribution data, I know of at least
one here in the UK that does this with the European data.
On a closing note, it's not unheard of on these sats for the odd
'wag' to play the fool from time to time. Its amazing how the
images of Santa with sleigh and snow going over the north pole
get up-linked around Christmas!<g>.
****
--
Bye, Wolf
Agente K: "Allora Beatrice, non c'era nessun alieno.
Il lampo di luce che hai visto nel cielo non era un UFO.
Si trattava di gas di palude uscito da un pallone sonda
rimasto intrappolato in una sacca termica che rifletteva
la luce di Venere"
My home page about UFO and X-Files:
http://www.geocities.com/Area51/Zone/1165/

E ho detto tutto...
Cacchio Mr. Wolf! Mi hai proprio tolto la parola di bocca. Intendevo
dire quella relativa a "E ho detto tutto" :))
Ciao : Goffredo Pierpaoli
-----------------------------
Il 27 Giugno 1980, 19 anni or sono, accadde qualche cosa
nei nostri cieli. Oggi notiamo un incredibile silenzio.
Silenzio dei 'media', silenzio dei politici, anche di 
quelli che lottarono per il raggiungimento dell'inizio
della verita'.
NON DIMENTICHIAMO IL CIELO DI USTICA
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