Dutch Astronomer is Spying on a Hubble Telescope Look-Alike!

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PostSun May 30, 2010 3:37 pm » by Kingz


Spying on a Hubble Telescope Look-Alike
May 29th, 2010 - Written by Nancy Atkinson

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Keyhole 11 satellite, imaged in orbit about 600 km (360 miles) away. Image courtesy Ralf Vandebergh.

Amateur astronomer Ralf Vandebergh from the Netherlands is becoming well-known for his ability to capture images of the space shuttle, space station and other satellites in low Earth orbit. Recently, he tried his hand at something a little more distant: The Keyhole 11-4 satellite, which orbits at about 600 km (360 miles) above the Earth. The KH-11 series of satellites was the first American spy satellite to utilize optical digital imaging, and create a real-time optical observation capability for reconnaissance of other countries. There were about 10 of these satellites, launched by the American National Reconnaissance Office between December 1976 and 1990. These satellites are about same shape as the Hubble Space Telescope – a cylinder with solar arrays on each side, but a little bigger: according to Wikipedia, the KH 11's are thought to be about 19.5 meters (63 feet) long, while Hubble is 13.1 meters (43.5 ft) long. Hubble's orbit is similar, at about 353 miles (569 kilometers), but a big difference is that while Hubble is pointed out towards space, the KH 11's are pointed back at Earth, looking at the happenings of humans.

Ralf emailed me with this newest image, and said, "Although we are too high in latitude in the Netherlands to see the known Hubble telescope, I did the following comparable observation," adding that he was surprised to have captured clearly the body with some detail and signs of solar panels.

"'High res' images may sound questionable, but realize that we speak of a category object in range 600 km altitude, and you will understand that the recorded resolution is less than the images obtained on objects as the Space Shuttle and the ISS in almost halfway its orbital altitude," Ralf said.

Ralf's observations of the KH 11 satellite were obtained "in steady air in the night of May 23, 2010."

Not much else is known about the KH 11 satellites, but only a couple of them are still operational. A US CIA employee went to prison for selling the technical manuals on these satellites to the Soviet Union.

Although no 'official' info is out there about the KH 11's, they are believed to resemble the Hubble Space Telescope in size and shape because the satellites were shipped in similar containers. Also, a NASA history of the Hubble said that one of the main reasons for switching Hubble from a 3-meter main mirror to a 2.4-meter design "would lessen fabrication costs by using manufacturing technologies developed for military spy satellites."

Just what can these satellites see on the ground? Assuming a 2.4-meter mirror, the theoretical ground resolution with no atmospheric degradation and 50% Modulation Transfer Function would be roughly 15 cm (6 inches), but actual resolution would be worse due to effects of the atmosphere.

So, Ralf was spying on the spies!

http://www.universetoday.com/2010/05/29 ... ook-alike/
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PostSun May 30, 2010 3:38 pm » by Kingz


his webpage on the KH 11 observation, includes a "movie" of a KH 11 flare. :look:

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At 00:06:18 UTC, there was a short flare which I managed to capture, as
presented in the short movie. Note that all images are tracked fully
manually, so the capture of such a short flare requires a great tracking-
performance. But the higher orbit, and so lower apparant speed helped
certainly to capture much as possible frames.

It appears, after the flare, (the second image at 00:06:19) we see a
lot more of especially the solar panels. Although the main flare was very short, the frames strongly suggest that the object still was a few seconds brighter after the flare and thanks to that, provided a clearer view of the telescope.
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PostSun May 30, 2010 4:22 pm » by Kingz


aladin wrote:... If the spy finder has nothing to do once he can try to track down the SAR Lupe ... :mrgreen:

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:look: http://de.wikipedia.org/wiki/SAR-Lupe :rtft:


too much german for me too read now aladin, :D ;)
but this guy has captured many cool satelites and other spacevehicles with his telescopes!

Very active amateur astronomer.. :flop:
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PostSun May 30, 2010 4:31 pm » by Kingz


Thanks hehe :D


A large data archive of images will be kept in a former Cold War bunker belonging to the Kommando Strategische Aufklärung (Strategic Reconnaissance Command) of the Bundeswehr.
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PostSun May 30, 2010 4:35 pm » by Spock


Makes it interesting about the military blackout procedure on in-bound objects doesn't it?

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PostSun May 30, 2010 4:47 pm » by Kingz


spock wrote:Makes it interesting about the military blackout procedure on in-bound objects doesn't it?


Is that not a relatively new procedure, this black out thing? And is that the one, that when an asteroid or a sattelite comes down towards earth, that they don't have to say when or where it is going to fall?

if so...

I often think of that procedure, and I guess you can apply that to many of the recently happened events worldwide..

They basicly say that hey are going to keep it a secret if something comes towards the earth... and as we all know, they never will going to say wether they have found somekind of alien civilisation haning around in or near our solarsystem.. :peep:

:hell:
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