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Originally posted by ziggystar60
Is there anywhere on the net we can find detailed technical information about the cameras used on the space shuttles? The question about what kind of lens they have has come up in regards to other STS-videos, so it would be very useful to have access to accurate knowledge about the cameras.
Long-range trackers featured cameras with a 400-inch focal length and 100-feetper- second capability to provide more data points and better tracking of debris. The onboard imaging systems, dubbed ELVIS, or the Enhanced Launch Vehicle Imaging System, used several new and modified cameras located on the Space Shuttle’s solid rockets, external fuel tank and on Discovery. These cameras helped monitor the thermal protection system and the redesigned portions of the external tank. In fact, it was one of these cameras, the Sony XC-999, that was attached to the external tank in its spacehardened housing, that captured the debris event.
ABSTRACT:
In 1994, Inframetrics introduced the InfraCAM, a high resolution hand-held thermal imager. As the world's smallest, lightest and lowest power PtSi based infrared camera, the InfraCAM is ideal for a wise range of industrial, non destructive testing, surveillance and scientific applications. In addition to numerous commercial applications, the light weight and low power consumption of the InfraCAM make it extremely valuable for adaptation to space borne applications. Consequently, the InfraCAM has been selected by NASA Lewis Research Center (LeRC) in Cleveland, Ohio, for use as part of the DARTFire (Diffusive and Radiative Transport in Fires) space borne experiment. In this experiment, a solid fuel is ignited in a low gravity environment. The combustion period is recorded by both visible and infrared cameras. The infrared camera measures the emission from polymethyl methacrylate, (PMMA) and combustion products in six distinct narrow spectral bands. Four cameras successfully completed all qualification tests at Inframetrics and at NASA Lewis. They are presently being used for ground based testing in preparation for space flight in the fall of 1995.
Originally posted by zorgon
The GLOWING TETHER
The most famous sustained arc event of all led to the breakage of the TSS-1R electrodynamic tether, and the loss of the attached satellite. The image below shows the burned, frayed and broken tether end still attached to the Shuttle after the break. Incidentally, the tether continued arcing long after it and its satellite were drifting free, until finally it went into night conditions where the electron density was insufficient to sustain the arc. Noel Sargent (2002) has investigated whether the TSS-1R arc was seen to disrupt Shuttle communications. Although he has found no record of disturbed communications during the event, for most of the time the arc was shielded by metallic structures from the communications antennas, and when the tether broke, the arc was many meters from the receiving antennas. It remains to be seen whether sustained arcs produce radio noise severe enough to be a communications problem.
Source
The camera in question...
Tether Optical Phenomena Experiment (TOP)
Using a hand-held camera system with image intensifiers and special filters, the TOP investigation will provide visual data that may allow scientists to answer a variety of questions concerning tether dynamics and optical effects generated by TSS-1R. In particular, this experiment will examine the high-voltage plasma sheath surrounding the satellite...
In one mode of operation, the current developed in the Tethered Satellite System is closed by using electron accelerators to return electrons to the plasma surrounding the orbiter. The interaction between these electron beams and the plasma is not well understood...
Associate Investigator: Stephen Mende, Lockheed Martin
Source
Later vacuum-chamber experiments suggested that the unwinding of the reel uncovered pinholes in the insulation. That in itself would not have caused a major problem, because the ionosphere around the tether, under normal circumstance, was too rarefied to divert much of the current. However, the air trapped in the insulation changed that. As it bubbled out of the pinholes, the high voltage ("electric pressure") of the nearby tether, about 3500 volts, converted it into a plasma ( in a way similar to the ignition of a fluorescent tube), a relatively dense one and therefore a much better conductor of electricity.
www-istp.gsfc.nasa.gov...
The plasma sheath that was EXPECTED is why the tether is glowing and appears as wide as it does
www.abovetopsecret.com...
So if we are going to discuss cameras, lenses and other such stuff... lets at least talk about the RELEVANT cameras and not the other equipment on board like IMAX and full color imagers...
The videos are clips from the HANDHELD IR CAMERAS That is why they look the way they do... THERMAL Imaging not photographic...
Last I heard IR shots hot spots as BRIGHTER... the hotter... the more white the object is..
Ice particles in space last I checked do not generate a lot of 'thermal units'
..
[edit on 27-2-2009 by zorgon]
Originally posted by zorgon
reply to post by Kandinsky
So which department of NASA do you work for Kandinsky? I forgot what you said on that before...
Originally posted by drummerroy39
thread, scroll down till you hit my name. You will see three videos I posted. The second and third contain the quote. This is David Sereta corresponding with Dr Nuth, a physicist with NASA.
It simply means that we are still looking for a suitable explanation. Frank's comet hypothesis has not yielded any predictions that could be verified by observations that have been shown to be correct and has many observable consequences that are demonstrably false.
Originally posted by zorgon
The videos are clips from the HANDHELD IR CAMERAS That is why they look the way they do... THERMAL Imaging not photographic...
Last I heard IR shots hot spots as BRIGHTER... the hotter... the more white the object is..
Originally posted by drummerroy39
Its very credible because its sceintific data being relaid through Dr Nuth, a physicist from NASA. It doesen't get any more credible that that.
[edit on 27-2-2009 by drummerroy39]
Originally posted by ziggystar60
Is there anywhere on the net we can find detailed technical information about the cameras used on the space shuttles? The question about what kind of lens they have has come up in regards to other STS-videos, so it would be very useful to have access to accurate knowledge about the cameras.
Originally posted by zmoron
blather
Originally posted by drummerroy39
Yes, go to page 17 of this thread, scroll down till you hit my name. You will see three videos I posted. The second and third contain the quote. This is David Sereta corresponding with Dr Nuth, a physicist with NASA.
Originally posted by zorgon
A side note off topic...
Progress craft assembly line... now WHY do you suppose they need so many?
Originally posted by JimOberg
NASA's website is very poorly organized from the point of view of a user of such information. If you email me in care of my home page www dot jamesoberg dot com I'll send you the textual material I have, and we can figure a place to post it where people can use it. Or I can fax the pages and we can create a pdf file for posting.
KTDU-80 propulsion system used on the Progress cargo ship. Copyright © 2001 Anatoly Zak
Originally posted by Phage
Zorgon's photo appears it could be parts for a couple of Soyuz vehicles.
Originally posted by JimOberg
Gosh, I never 'forgot' that, I just never 'knew' it. My impression had been that from the beginning, the shuttle was designed to operate in low earth orbit. Your insistence that this is NOT true tells us a lot about YOU and the degree of credibility your claims deserve.
Originally posted by JimOberg
Am I getting your intent clearly? The space shuttle is secretly capable of flying to geosynchronous orbit, 22,000 miles high, and dropping off commercial satellites there, before returning to Earth? Is that what you are actually claiming? Wow, the mind reels... Please, enlighten me.
Originally posted by RFBurns
Originally posted by JimOberg
Am I getting your intent clearly? The space shuttle is secretly capable of flying to geosynchronous orbit, 22,000 miles high, and dropping off commercial satellites there, before returning to Earth? Is that what you are actually claiming? Wow, the mind reels... Please, enlighten me.
If you were in the need to know, you would not need to ask about it.
So...after all this..has there been any effort made to explain how the object manuvers as it does in the OP's video yet?
Doesnt look like it.