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Old January 8th, 2008, 09:03 PM   #1
Matthew Field
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KJXB TV mast pano

still the second tallest manmade structure in the world until the Burj overtakes it. Maybe the world's tallest pano.

Heres a 17 image vertical pano with a link to a 640x25476 version

http://www.flickr.com/photos/matthewfield/2172919133/

and here's a small version....

image hosted on flickr


Matt

<edit> oops spoonered the name in the subject line - its KXJB not KJXB

Last edited by Matthew Field; January 8th, 2008 at 09:04 PM. Reason: title is wrong
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Old January 8th, 2008, 09:48 PM   #2
ZZ-II
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, wow. never seen such a shot before!! i hope they'll make the same panorama with the burj dubai
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Old January 21st, 2008, 05:27 PM   #3
Brendan
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Last edited by Brendan; January 1st, 2012 at 05:44 PM.
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Old January 21st, 2008, 07:23 PM   #4
Darhet
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The Warsaw radio mast was the world's tallest structure until its collapse on August 8, 1991. Until the advent of the Burj Dubai it was the tallest land-based structure ever built.


The Warsaw radio mast was mentioned in Guinness World Records as the world's tallest structure.

Warsaw Radio Mast, which was designed by Jan Polak, was 646.38 metres (2,120.67 ft) tall. Its construction started in July 1970, and was completed on May 18, 1974, and the transmitter that used it entered regular service on July 22 of the same year. It was located in Konstantynów, Gąbin, Poland, and was used by Warsaw Radio-Television (Centrum Radiowo-Telewizyjne) for longwave radio broadcasting on a frequency of 227 kHz (before February 1, 1988) and 225 kHz (after). Because a voltage potential of 120 kV existed between the mast and ground, it stood on a 2 metre high insulator. It operated as a mast radiator, so its height was chosen in order to function as a half-wavelength antenna at its broadcasting frequency. The signals from its 2 megawatt transmitters could be received across all of Europe, North Africa and even in North America. Its weight is debated: 380 tonnes, 420 tonnes, 550 tonnes and even 660 tonnes have been cited, probably the result of inaccurate conversion of units by translators. Polish sources claim 420 metric tonnes.

The Warsaw radio mast was a guyed steel lattice mast of equilateral triangular cross section, with a face width of 4.8 m. The vertical steel tubes forming the vertices of the mast had a diameter of 245 millimetres; the thickness of the walls of these tubes varied between 8 and 34 millimetres depending on height. The mast consisted of 86 elements, each of which had a length of 7.5 metres. The mast had 3 arrays of guy wires, each attached to the mast at 5 levels. Each guy was fixed on a separate anchor block at the ground and was 50 mm in diameter. In order that the guy wires not interfere with the radio transmissions, the guys were insulated at regular intervals. The weight of guys and insulators used for anchoring the mast was 80 metric tons. An elevator and separate protected ladders were installed in the interior of the mast to facilitate access to the various mast components, including the aircraft warning lamps. The elevator had a maximum speed of 0.35 m/s and required 30 minutes for a trip from the bottom of the structure to the top.


Collapse

On August 8, 1991 at 16:00 UTC the mast collapsed due to an error in exchanging the guys on the highest stock of the mast. The mast first bent and then snapped at roughly half its height. A small mobile crane, property of Mostostal Zabrze, was destroyed in the collapse. The helix building and the transmitter building (including the transmitter devices in it) were not damaged.
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Old January 28th, 2008, 07:57 PM   #5
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@Matthew Field: the composition of your picture of KJXB TV Mast is very well. It looks as made on a single picture.

How did you fit the pictures together?
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Old January 29th, 2008, 08:22 PM   #6
Matthew Field
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Quote:
Originally Posted by Obelixx View Post
@Matthew Field: the composition of your picture of KJXB TV Mast is very well. It looks as made on a single picture.

How did you fit the pictures together?
The workflow was Canon 20D/300mm F4L/1.4x TC (full manual, RAW) -> Canon Digital Photo Professional (manual white balance, same recipe for 17 frames, export to 16 bit TIFF) -> Realviz Stitcher Unlimited (render snapshot, 16 bit TIFF) -> Photoshop CS3 (crop, levels, sharpen)

The image was taken from about a mile from the base of the transmitter, hence the low perspective distortion (and hence the visible atmospheric distortion) and the long focal length required (670mm in 35mm equivalent)

Matt
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