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Streamed live on Sep 5, 2024
Come join me and chat as I process some declassified spy satellites images live! ️
We georeference a KH-9 HEXAGON image of New York from 1979, and upload a KH-9 HEXAGON image of Saint Petersburg to my website.
The images processed in this livestream will be freely available for anyone to view and share.
no such thingI recall Space Daily having an article a decade or two back about a “Monster satellite” of 9 tons or so to give video of Earth from geosynchronous orbit.
Geo-eye 3S or something…
On June 8, 1982, Lieutenant Carlos Cachon was leading a flight of A-4 Skyhawk jets at low level over the Falkland Islands in the South Atlantic. Argentine forces had invaded the islands in April, prompting the United Kingdom to send a naval and amphibious force to retake them. The war had gotten bloody in May, with significant troop and ship losses on both sides. Now it was about to get even worse for the British.
According to Skyhawks Over the South Atlantic, by Santiago Rivas, Cachon and his fellow pilots crossed into and out of clouds and rain that hampered their visibility, then flew over a large number of British troops on the ground. Another pilot suddenly yelled “There are the ships!” and Cachon saw “two grey silhouettes” against the coast. He began his attack and released his bombs, which hit the center of the Royal Fleet Auxiliary (RFA) Sir Galahad. Another pair of pilots hit the RFA Sir Tristram.
In total, 43 Welsh Guards and seven ship’s crew were killed in what became known to the British as “the darkest day of the fleet.” Sir Galahad burned and kept burning for days. Sir Tristram was less heavily damaged.
Falklands
On June 13, a HEXAGON reconnaissance satellite overflew the islands. The weather was usually bad for overhead reconnaissance during the war, but on this day portions of the islands were clear. The HEXAGON photographed broad swaths of the islands. The HEXAGON could cover immense amounts of territory in a single image. Five days after the two ships had been successfully attacked, Sir Galahad was still burning, its smoke plume visible in one of the satellite’s images. But the downside of HEXAGON’s impressive capabilities was that it achieved them using film, and that film sat inside the satellite until the reentry vehicle that carried it was ejected on June 15 and recovered over the North Pacific. Then it had to be recovered, transported to Rochester, New York for development, and sent to Washington for imagery interpretation. The war ended on June 14; by the time the film showing the burning Sir Galahad reached an interpreter’s desk on June 24, the war had been over for ten days.
The KH-9 history and its complicated relationship with the Space Shuttle. By @blackstar
https://www.thespacereview.com/article/3160/1
https://www.thespacereview.com/article/3302/1
https://www.thespacereview.com/article/3748/1
https://www.thespacereview.com/article/3390/1
https://www.thespacereview.com/article/3394/1
I wanted all the articles to be at the same place and in the right order.
Maybe I will list more of that stuff.
I wrote a lot about Apollo
You should buddy, you should....I don't know how many articles I have written for TSR over 20 years, but it has to be over 300 of them. I wrote about 20 last year, at least 20 the year before, and in many previous years I was averaging about 40 a year. Not all of them were on reconnaissance topics. I wrote a lot about Apollo as well as space solar power, the shuttle, astronauts, etc. (Admittedly, some of them were also rewrites of earlier articles.) I've never compiled them all into a single place like a blog.
A bit off-topic but have you written anything to do with project Apollo in cooperation with Amy Shira Titel?
A few years ago she plagiarized some stuff written by @blackstar
You should buddy, you should....
About both Moonraker (if you are referring to the 007's movie) and KH-11/HST relationship I think can help you.I have lots of "shoulds" in my life. But my day job keeps getting in the way of my hobbies.
Next couple of articles are on the Defense Support Program satellites. That will be followed with something about a Program 989 signals intelligence satellite and something about lunar sample return (which is a surprise). Then maybe something about "Moonraker." Then maybe I'll get around to the interesting information I have about the relationship between the KH-11 and the Hubble Space Telescope...
About both Moonraker (if you are referring to the 007's movie) and KH-11/HST relationship I think can help you.
Let me know it via e-mail.
The proposal I mentioned in post #85no such thing
Proposals mean nothing.The proposal I mentioned in post #85
https://www.satellitetoday.com/gove...ner-for-its-next-earth-observation-satellite/View: https://m.youtube.com/watch?v=EEPF0QzbtQI
I don’t know why I called it GEOEYE…
Apr 17, 2025 Eyes on Earth
Declassified spy satellite imagery, distributed by the USGS EROS Center, is finding fascinating uses since being made available to the public starting in the 1990s. In this episode of Eyes on Earth, we talk with Philipp Barthelme from the University of Edinburgh, who used imagery from the declassified HEXAGON and CORONA satellites to map bomb craters and herbicide spray lines from the Vietnam War. These features appear in the black and white photos quite clearly, so Barthelme worked out machine learning methods to automatically detect them. This method can help narrow down where to search for unexploded weapons and focus on the areas that are most contaminated.
Apr 17, 2025
In this debut episode of my Codename Keyhole documentary series, we go in-depth into the spacecraft that started it all, the very first spy satellite, Corona!
Note: Some of the camera photo documentation is conflicting compared to the CIA's own files, don't mind it and the specs are all good![]()
Photo Credits:
"Eye in the Sky - The Story of the Corona Spy Satellites" by Dwayne A. Day
Drew Ex Machina: https://www.drewexmachina.com/2019/04...
Heroicrelics
The Aviationist
Associated Press
CIA
NRO (Naval Reconnaissance Office)
Wikipedia
Public Domain
Video Footage Credits:
Retro Space HD (Youtube)
DroneScapes (Youtube)
Eighties Seeker (Youtube)
IEEE Spectrum (Rotary Converter Footage) (Youtube)
Computer History Archives Project "CHAP" (Youtube)
CIA
NRO (Naval Reconnaissance Office)
National Archives
Smithsonian Air and Space Museum
Documentation/Sources:
https://ia800202.us.archive.org/25/items/CORONA-CIA/A History of Satellite Reconnaissance_text.pdf
https://www.cia.gov/resources/csi/static/3d24f7019bf7e718fd1d2a5c57e6a646/corona.pdf
https://www.nro.gov/Portals/65/documents/history/csnr/corona/The CORONA Story.pdf
https://en.wikipedia.org/wiki/CORONA_(satellite
https://www.thespacereview.com/article/4671/1
https://www.thespacereview.com/article/4682/1?utm_source=chatgpt.com
https://www.globalsecurity.org/space/systems/kh-1-system.htm?utm_source=chatgpt.com
https://www.nrsc.gov.in/sites/default/files/pdf/foreigndata/corona.pdf
https://archive.org/details/eyeinskystoryofc0000unse/mode/2up
https://military-history.fandom.com/wiki/Corona_(satellite)#Technology
https://thespacereview.com/article/4094/1
Music Credits:
Song: Diamond Eyes - Worship [NCS Release]
Music provided by NoCopyrightSounds
Free Download/Stream: http://ncs.io/Worship
Watch: http://ncs.lnk.to/WorshipAT/youtube
Timestamps:
00:00 Intro
02:13 History
09:17 The Satellites
26:53 Cameras & Capsules
40:54 The Venezuelan Incident
45:11 "Corona Calibration Targets"
49:06 Closing
A lot wrong in it.Codename Keyhole Part 1: Corona's "Eye In The Sky"
View: https://www.youtube.com/watch?v=tESg4VV_zb4
Yeah just seen the posts over on NSF about it. Looks like they are trying to find the official and now declassified documentary about it.A lot wrong in it.
Restored CIA documentary from 1972 about the Corona program, showing some launches, imagery and reentry capsules.
The video was remasted to improve color balance and stability. AI upscale (Topaz AI) was used to resample the video to full HD resolution. While it works in most cases, some artifacts are present in some sequences.
Sound and image cleanup, AI upscale and color restoration by RetroSpace HD.
The politics of the Eastern Mediterranean are, to put it mildly, complex, and one of the key areas of dispute over millennia has been the island of Cyprus. It is the third largest island in the Mediterranean Sea, located in the eastern Mediterranean 65 kilometers south of Turkey, 100 kilometers west of Syria, and 800 kilometers southeast of mainland Greece. The capital is Nicosia. An important British signals intelligence base and accompanying British forces are located there.
In summer 1974, Cyprus heated up a decade after a previous clash. Years of unstable calm erupted into a sudden flashpoint as two NATO allies fought for control of the island. And American satellites were watching from overhead. Now, for the first time, satellite photos of the conflict have been made public.
In the first half of 1971, it was becoming clear that something big was about to happen at Vandenberg Air Force Base in California. Workers had prepared a launch pad for a new, larger rocket, the Titan IIID. This was to be the biggest, most powerful rocket ever launched from the West Coast, equipped with two solid rocket motors on its side. Previously, the Air Force had planned to launch the Titan IIIM with the Manned Orbiting Laboratory from Vandenberg. It would have been more powerful than the IIID, but it was canceled in 1969. There was no way to keep the large rocket secret—when it rose up over the low mountains, people in nearby Lompoc would see it, people to the south in Santa Barbara would see it, and people in much more populated Los Angeles would also probably see it.
In mid-June 1971, the Director of the National Reconnaissance Office, John McLucas, wrote to the Director of Central Intelligence, Richard Helms, to inform him of what was about to happen:
“Previous experience with new space launchings indicates that we may expect some media coverage of the initial HEXAGON launch. This will be the first time that a booster as large as the Titan IIID has been launched from Vandenberg Air Force Base and will indicate a major new program. In this period of limited space activity any new program commands national interest.”
McLucas stated that the only official comment regarding the launch would be a post-launch announcement that a satellite employing the Titan IIID was launched from Vandenberg. No other questions would be answered and all the press would get was, “The payload is classified and no additional information can be provided.”
Recently, a commercial imagery satellite photographed the Russian nuclear-powered battlecruiser Admiral Nakhimov at pierside after undertaking new sea trials. The satellite imagery provides new details about the ship’s modernization after a very long and expensive refit period. It reveals the large number of missiles that the ship is now equipped to fire, making it, by some measures, the most powerful surface warship in the world. The ship first came to the attention of Western intelligence agencies in satellite photos taken more than 40 years ago, but then it posed a greater threat than it does today.
warships
Spotting the monster
In early 1974, American reconnaissance satellites spotted the first signs of a new major surface warship under construction at a Leningrad (now St. Petersburg) shipyard. Over the next several years they photographed the ship as it took shape, indicating that it would be the Soviet Union’s first nuclear-powered surface warship. The ship launched in late 1977, sliding down the ramp into the Neva River. It was the largest surface combatant in the world at that time, bigger than any American cruiser. High-resolution reconnaissance images showed that it had twenty large hatches on its bow covering what were obviously big missiles, and intelligence analysts determined that it was intended to attack American aircraft carriers. Other hatches concealed anti-aircraft missiles. The ship’s pagoda-like superstructure was covered with numerous radar and communications antennas. Eventually, the US intelligence community determined that the ship was named Kirov. (See “HEXAGON vs. Kirov: American satellite reconnaissance and the Soviet Union’s most powerful warship,” The Space Review, September 23, 2024.)
In summer 1980, an American reconnaissance satellite flew over the Soviet Union’s Severodvinsk shipyard and for the first time photographed a new, large nuclear-powered cruise missile submarine, eventually designated the Oscar I, and a massive nuclear-powered ballistic missile submarine designated the Typhoon. That same year, American satellites flew over the Northern 61 Kommuna 445 shipyard at Nikolayev on the Black Sea and photographed the first of the 445-F cruise missile cruisers, and evidence that two more were under construction. Not very far away, at another Nikolayev shipyard, a Kiev-class heavy cruiser/aircraft carrier was fitting out, with another under construction and probably launching in 1981. Meanwhile, near Leningrad, the first nuclear-powered guided missile battlecruiser Kirov was undergoing sea trials, and a second vessel of the type was under construction and would probably launch in 1981. The Oscar I, 445-F (later re-designated Slava) and Kirov were all intended to attack American aircraft carriers. The Typhoon was designed to destroy American cities. The satellites made clear that the Soviet Union was building many new vessels with much greater capabilities, apparently intending to finally face the United States Navy in the open ocean.
While this was happening, the US Navy was shrinking rapidly in size due to the retirement of hundreds of World War II-era ships that had reached the end of their lifetimes and were incapable of modernization. In the previous decade, the fleet had declined from just under 1,000 to 450 ships, and combat aircraft had reduced from 2,700 to 1,700. In 1979–1980, the General Accounting Office evaluated the possibility of modernizing and extending the lifetime of nineteen World War II-era Gearing-class destroyers, but determined this would be expensive. By 1980, some in the US Navy and Congress began discussing refurbishing several larger mothballed ships, including the aircraft carrier Oriskany, and the four battleships of the Iowa class (something that is in the news again).
In July 1959, one of the key figures in the establishment of the CORONA reconnaissance satellite program, CIA Deputy Director for Plans Richard M. Bissell, Jr., wrote a memo to Roy Johnson, Director of the Advanced Research Projects Agency, about putting self-destruct devices on satellite reentry vehicles that returned top secret film from orbit. Bissell was replying to Johnson about the need for security in case the vehicle fell into the wrong hands. Bissell explained that CORONA contractor Lockheed had prepared estimates and designs for a destruct system. He wrote that they would soon have the results of Lockheed’s work, particularly how much it would weigh—a critical factor given how little mass margin was left on the vehicle.
Johnson’s concern about a CORONA vehicle in enemy hands wasn’t simply theoretical. In April, there was widespread concern that the second Discoverer satellite—which was the cover story for the CORONA program—had fallen on Spitsbergen Island in the Arctic. Air Force officers raced to the scene but did not locate the craft, and suspected that the Soviet Union might have retrieved it instead. This incident formed the basis for the novel and later movie Ice Station Zebra. There is no evidence the vehicle was recovered.
More to the point, a key Air Force official involved in the launch believed it was highly unlikely that the vehicle could have come down and hit the only bit of dry land amid millions of square kilometers of ocean. Discoverer 2 did not have a classified payload onboard, and the reentry vehicles were designed so that they would only float for 24 hours before sinking. But there was a real possibility that a future satellite, with exposed film showing Soviet targets, could be recovered by somebody other than the US government.
No self-destruct system was added to the reentry vehicles, but several future incidents probably made people involved in the program rethink that early decision.
The early years of the American satellite reconnaissance program, particularly the photo-reconnaissance satellites, have been declassified for some time now. We know the history up through the mid-1970s and the CORONA, GAMBIT, and HEXAGON programs, as well as more obscure projects like ARGON and LANYARD and Samos. However, there are still some minor mysteries from this early era, and one of them concerns something known as the “P-Camera Experiment.”
In March 1963, the first LANYARD reconnaissance satellite was launched from Vandenberg Air Force Base in California but failed to achieve orbit. LANYARD was an adaptation of an existing camera system that had been developed for the Samos E-6 program. It was, as one CIA official put it, an effort to make a silk purse out of a sow’s ear—trying to salvage something from a string of Samos failures. But LANYARD also had an important target for its first mission: a location near Leningrad that was suspected to be a new anti-ballistic missile launch site. That could indicate that the Soviet Union was about to deploy a nationwide anti-ballistic missile system. Intelligence analysts wanted higher quality photos of the target to determine exactly what it was.
Maps are in many ways the most basic of intelligence documents. They are powerful tools necessary for commanding an army. At the very least they tell a commander where the military objective is located and the best means of reaching it. Detailed maps can enhance an army's power many times, by allowing it to use the terrain itself as a weapon or a defense.
But acquiring detailed maps of hostile terrain is a major challenge. For American military leaders during the early years of the Cold War, much of the Soviet Union was as uncharted as the dark side of the Moon. The United States had to rely on Soviet maps, many of which were either incomplete or deliberately inaccurate. The locations of mountains, rivers, lakes, and even whole cities were either unknown or highly doubtful. Without this knowledge, military operations were at risk. Indeed, without accurate maps of Soviet territory, ICBMs were very limited in their utility, except for blowing up large targets like cities.
Satellites offered a solution to this problem from the very beginning. Long before there was such a thing as civilian remote sensing, the United States military developed the means to map this dark territory, and did so behind its own cloak of secrecy.
USSR surface : 22.4 million km2Typical HEXAGON missions returned approximately 60 000 total frames, compared with approximately 12 000 total frames for each KH-4B CORONA mission. In total, HEXAGON’s cameras produced approximately two million photographs covering 877 million square miles (2.3 billion square kilometres)—more than double the number of photographs produced by the highest resolution CORONA KH-4A and KH-4B (approximately 700 000).
Mapping the dark side of the world (part 2): supplementing, and supplanting, the ARGON geodetic satellite program
by Dwayne A. Day
Monday, November 24, 2025
In February and April 1961, the first two KH-5 ARGON mapping satellite missions were unsuccessful due to reentry malfunctions. The next two missions, in June and July, suffered launch failures. Despite this poor record for ARGON, by December 1961, the United States had conducted ten successful CORONA reconnaissance flights over the Soviet Union. In addition to detecting numerous new military facilities within previously “denied territory,” analysts had also begun using CORONA’s photographs to measure the size and relative location of these intelligence targets. This measurement was known as “mensuration” and involved the development of numerous new techniques and equipment for accurate measuring. Even if ARGON was not yet producing mapping data, CORONA could cover some of the requirement (see “Mapping the dark side of the world (part 1): the KH-5 ARGON geodetic satellite,” The Space Review, November 17, 2025).
This effort, led by people like Chris Mares and John Cane of the newly created National Photographic Interpretation Center (NPIC), and William Mahoney of the Air Force’s Aeronautical Chart and Information Center (ACIC), became more urgent after the Soviets detonated a 58-megaton nuclear device in October 1961. The Soviet test prompted US defense analysts to look closely at American nuclear weapon targeting policy.[1] US defense planners wanted to know the exact distances between nuclear targets in the Soviet Union. This would allow them to determine if a target required more than one bomb to destroy it, or if multiple targets could be destroyed with a single weapon. CORONA reconnaissance photographs could be used to employ American nuclear weapons more economically.
Mapping the dark side of the world (part 3): Replacing ARGON, the SAMOS E-4, and mapping the Moon
by Dwayne A. Day
Monday, December 1, 2025
Throughout the early 1960s, there was a constant bureaucratic turf battle over which service would control satellite mapping. While ARGON was in development and beginning launches, the Air Force was trying to produce a follow-on system, in the hopes that it would succeed ARGON and eventually push out the Army, which had a lead role in ARGON in cooperation with the CIA, and place the Air Force in overall charge of mapping and geodesy from space. The CIA’s position was primarily that mapping requirements should not interfere with gathering reconnaissance photos. By the second half of the decade, these arguments would result in compromises that ultimately led to the DISIC camera system, which also eventually made it to the Moon (see “Mapping the dark side of the world (part 1): the KH-5 ARGON geodetic satellite,” The Space Review, November 17, 2025).
The SAMOS E-4
The Air Force had first defined the requirement for a mapping and charting satellite in September 1958. By January 1959, the Air Force refined this into a proposal for a recoverable mapping satellite capable of taking pictures with high geometric fidelity. The Air Force started this as the E-4 SAMOS system, and it was tied to the SAMOS E-5 reconnaissance system, which had a much larger camera. The SAMOS E-4 would use the same type of large recoverable spacecraft that would bring the entire camera back to Earth. The capsule was 72 inches (183 centimeters) in diameter and 84 inches (213 centimeters) long, far bigger than was needed to carry a mapping camera. It also required an Atlas rocket, which was more expensive than the Thor that was used to place ARGON into orbit.