this post was submitted on 29 Oct 2024
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Photography

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AN/FPS-24 Radar Tower, Mt. Umunhum, Los Gatos, CA, 2024.

Most of the pixels, none of the TV interference, at https://www.flickr.com/photos/mattblaze/53796724938

#photography

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[–] [email protected] 1 points 1 week ago (10 children)

This is a stitched imaged made from two captures with the Rodenstock 70mm/5.6 HR-Digaron-W lens, Phase One IQ4-150 digital back (@ ISO 50), and a Cambo WRS 1250 camera, shifted left/right 15mm, producing a 230MP final image.

Note that the full resolution version isn't currently up on flickr due to a bug preventing the upload of very large images there. Currently a large (but reduced size, 100MP) version occupies a placeholder there.

[–] [email protected] 1 points 1 week ago (9 children)

From 1958 through 1980, this incongruous four story monolith was the centerpiece of the "Alameda Air Force Station", a long-range radar site that was part of NORAD's SAGE early warning system. The blast-hardened concrete building served as the platform for an FPS-24 radar system, a massive 120 foot wide reflector that emitted a 5 megawatt VHF pulse, continuously rotating at 5 RPM.

Notoriously, the signal disrupted TV and radio reception throughout the San Jose area.

[–] [email protected] 1 points 1 week ago (1 children)

@[email protected] I'm reminded of the Russian Woodpecker that used to appear in short-wave bands back in the day (I had no idea what it was when I was a kid playing with a radio with a SW band).

https://en.wikipedia.org/wiki/Duga_radar

[–] [email protected] 1 points 1 week ago

@stacey_[email protected] yeah, the Duga site has long been on my list to visit, but that’s definitely impractical these days.

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