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Showing posts with label Radio Astronomy. Show all posts
Showing posts with label Radio Astronomy. Show all posts

Friday, January 24, 2025

Russian OKNO Space Observation Complex


ОЭК ОКНО Нурек (Таджикистан) OKNO ( window) COMPLEX
asotano

The audio track is in Russian. You can get English subtitles by clicking on CC and then on the adjacent star / gear / settings icon, go Subtitles and then select English from the long list of languages. The subtitles are pert near incoherent, but if you mute the audio, you can get an idea of what this place is all about.


OKNO

Pretty desolate looking place, except there's a lake. Probably ice cold.

I went looking for more information about this place. Wikipedia has a page. It's pretty sparse, but it had a link to a LiveJournal entry, however entry is denied, so I looked it up on the Wayback machine and found it. It's all in Russian. I got Google to translate it for me and here is the result:



"WINDOW" into outer space
14 Oct, 2011 at 5:35 PM
militarypenguin

So, I gathered my strength, put aside all urgent and not so urgent matters and chose a few photos to tell you about the unique object "Window", which I visited at the end of September.


"Okno" is an optical-electronic space control complex. It is located 9 km from the city of Nurek (Tajikistan) at an altitude of 2216 meters above sea level. The construction site was chosen in the 70s of the last century due to the properties of the atmosphere (transparency and stability) and the number of clear night hours (more than 1500 hours per year) - in the former USSR, areas with similar parameters exist only in the Caucasus, but the Nurek complex is located much further south and allows it to capture a larger number of objects.
The complex belongs to the Russian Space Forces, and has been operating in normal mode since 1999.
"Okno" allows for the detection, recognition and calculation of orbits of space objects in automatic mode at altitudes from 2000 to 40000 km and a size of more than one meter. The principle of operation is simple - space objects are detected by the sunlight they reflect. Space observation is carried out exclusively at night: both already known and newly discovered objects are recorded. In total, the complex's catalog contains 9,000 known space objects.

The road to the complex has not been repaired for many years, but according to the commander of the military unit, money for its major repairs has already been included in all budgets for next year. At the exit from the regular road towards the complex, there is a warning in Russian and Tajik.


The entire complex did not fit in my frame, but you can see the main parts in parts. The nearest building is the Command and Computing Center.


Space communication systems.



As in any military unit, a lot of attention is paid to the design and visual propaganda. :-) This hangs above the entrance to the Command and Computing Center.


The domes are precisely those very optical-electronic space probing complexes in a closed form. They do not work during the day, and therefore are closed.


View from the helipad to the Nurek hydroelectric power station reservoir.


And this is a view of the dacha of the President of Tajikistan Emomali Rahmon - there will be a separate post about the dacha, as it turned out, I was the first blogger there on the territory. Well, and there was one microblogger before me - Dmitry Medvedev.


All incoming information is displayed on these screens during the operation of the complex. During the day, of course, the screens are turned off.


The banner of the military unit, presented on July 11, 2009 by the commander of the Russian Space Forces, is also kept here.


Due to the sedentary nature of the work at the command post, officers have the opportunity to ride a stationary bike and use a jump rope. :-) Without leaving their workplace.


Due to the fact that duty at the facility is daily, the military eats here.



There are also other buildings on the territory in addition to the Command and Computing Center, they also have propaganda. :-)


Some objects have their own names. This one is named after the city of Noginsk in the Moscow region (pre-revolutionary name - Bogorodsk) due to the fact that the military unit has excellent relations with the city and the children of the military attend a school that is officially a branch of one of the Noginsk schools in Nurek.


Actually, we went into "Bogorodskaya" to see what was going on. We even opened the dome for a while so that we could take pictures from different sides.


The dome opens using a very simple system, understandable to any normal person with a higher technical education. ;-)


Actually, the telescope rotates in several planes.


And this is a neighboring object that is undergoing maintenance.


I went there to take a picture of "Bogorodskaya" from the side.





Here you can see a stand with information about the performance characteristics of the optical-electronic station - I wrote about them a little higher).


View from the helipad to part of the complex.


The complex is surrounded by an electrified fence.


And this is how the Okno complex looks from the dacha of the President of Tajikistan.


If you look closely, you can see abandoned barracks in this photo, where conscripts serving at the facility lived until the mid-90s. After the civil war in Tajikistan, when the presence at the facility was minimized, and the transition to contract replenishment, they were no longer needed and are abandoned. Contract soldiers with their families live in service apartments on the territory of the unit in Nurek. Singles - in rooms for two. We did not go to these barracks, because there are a lot of poisonous snakes there.


I didn't take many photos on the territory of the unit in Nurek, because the unit is not much different from most of the military units I've been to over the past year. True, there is a difference. The unit's club was built by the military using extra-budgetary money. And this is the church, for which the military chipped in themselves. There is no priest in the unit (although a full-time position has already been allocated), the service is conducted by a priest from a Russian military base.



There is a place for sports (just under the windows of the hotel room where I spent the night). In the morning I was woken up by noise and looking out the window I saw a large number of officers doing pull-ups, abdominal exercises, etc. To the right are basketball and volleyball courts.


In general, thanks to this complex, Russian military and civilian leaders know almost everything about space objects flying above the Earth, and any new object is detected and identified in the shortest possible time. And it is not the telescopes that play a significant role in this, but the people serving in the unit.
I would like to express special gratitude for their participation to the unit commander, Colonel Dmitry Bataragin, and the deputy unit commander for educational work, Colonel Vladimir Samoilov, for their time spent with me. I know for sure that they and many servicemen of military unit 52168 will read this post. THANK YOU! ;-)))


Saturday, May 28, 2022

Microwaves on Jupiter

Aurorae on the north pole of Jupiter generate cyclotron masers (Hubble)

You start reading science fiction, and you start looking things up and look what you get - aurora on Jupiter showing up in the ultraviolet and in the microwave portions of the electromagnetic spectrum.


Monday, February 7, 2022

Galactic Black Hole of Doom

The Galactic Center in Radio from MeerKAT
Ian Heywood & Juan Carlos Munoz-Mateos

This is a radio image of the Milky Way's center. It was produced by the MeerKAT array of 64 radio dishes in South Africa. The image spans four times the angular size of the Moon (2 degrees). 

The galactic center is in the direction of the constellation Sagittarius. Sagittarius A* is the bright spot in the center of the image. It is the super-massive black hole at the center of our galaxy. Yes, I know, it's an oxymoron to say that a bright spot is a black hole, but black holes attract stuff and big black holes attract a lot of stuff, so much stuff that it gets crowded trying to get in, and when it gets crowded, it gets hot. So what we are actually seeing is the super heated crowd of stuff getting sucking into the pit of their doom.

The key in the lower right corner shows that the colors are based on the spectral index, ranging from -1.8 to 1.0. The opening line of Wikipedia's page about Spectral index is:

In astronomy, the spectral index of a source is a measure of the dependence of radiative flux density (that is, radiative flux per unit of frequency) on frequency. 

It goes on at some length babbling about bizarre mathematical functions, but I'm not going to get into that. 

My rough approximation is that they measure the power at a frequency and then compare the power level (on some arbitrary scale) to the frequency. So a low frequency signal, say 1 Hz, with a 'power level' of 1 will have a spectral index of 1. A high frequency signal at 1GHz with a power level of one billion would also have a spectral index of 1. This is only a rough guess on my part because it doesn't explain how you could get a negative spectral index.

NASA's page has an annotated version. Mouse over the image and labels of the various features show up.

Via Borepatch


Saturday, November 28, 2020

Arecibo Damage

 

Arecibo Damage, SkySat image August 10, 2020
Click to embiggenate. That should make the damage apparent.

I've heard that the Arecibo Radio Telescope was being shut down, but now we've got a picture and an explanation.

The Arecibo Observatory has been shut down after a structural cable failed, punching a 100-foot-long gash in the dish. - PlanetLabs

Via The Unwanted Blog

Monday, February 25, 2019

LOFAR

LOFAR Radio Telescope, Holland
LOFAR is a new kind of radio telescope. This site contains the bulk of the antennae, but there are other smaller sites scattered around western Europe. They are all linked to a super computer which grinds the signals from all the sites into . . . something. This circular island is about 1200 feet in diameter. At first I thought this might be a picture of an meteorite impact crater, but evidently it is just the Dutch trying to make a dry spot out of a swamp.

Via Starts with a Bang!

Sunday, October 1, 2017

Zig Zag

Aircraft leaving zig zag contrails over the Arecibo radio telescope
I came across this while I was mapping Big Antennas, and I wondered what could have caused the contrails to zig zag like that? Are there narrow bands of contrary winds blowing north and south? Is the plane following the conture of the ground while flying over hills? Neither of these explanations seemed likely.

Aircraft leaving straight contrails over the Arecibo radio telescope
Then it struck me that is was likely an artifact of Google's imaging program, and sure enough, change to the 3-D view, spin the orientation 180 degrees and tilt the view a little bit and those contrail lines straighten right out.

Monday, June 26, 2017

Beetle Juice

Betelgeuse captured by ALMA
Our first picture of a star. Up till now a star was only a pinprick of light. This image was captured by ALMA, which is more of a radio telescope, so this image was generated from a bunch of bits using mystical software written by gnomes. Still pretty cool. ESO story here.

ALMA is a big, as in billions big, project. I've posted about it before.

Via Detroit Steve.

Monday, December 12, 2016

SETI


Vela Pulsar with sound. Magic! Finally!
Not a radio transmitter belonging to an extraterrestrial civilization.
Alex Joss

Looks like we are finally applying a little intelligence in our search for intelligent life. From a story on Nautilus:
Put simply, we may well have received a message from intelligent beings and neglected it because it didn’t conform to our expectations for what a signal should look like. And this might be why we have yet to detect any interstellar communications in 50 years of searching. - Laurance R. Doyle
He's applying information theory to non-human communications to rate their complexity. Humpback whales pass, the Vela Pulsar (above) doesn't. More from the story:
We are currently analyzing microwave data obtained at the SETI Institute’s Allen Telescope Array, which consists of 42 individual telescopes observing in the frequency band from 1 to 10 gigahertz.
Which, along with the stuff I've been reading about radiation recently, makes me wonder if maybe advanced civilizations are using gamma rays for communication. You would be able to pack a lot more information in a gamma ray signal, much more than you can get in any kind of radio signal. Gamma rays are to the light we use in our fiber optics much like that light is to radio waves. Admittedly, gamma rays are a little hard to control, and fatal if you catch too many of them, but maybe that's the test of an advance civilization: the ability to control gamma rays.

Via Detroit Steve.

Pictures of the Allen Telescope Array:

Hat Creek Radio Observatory by The Flicks

UC Hat Creek Radio Observatory (HRCO). Image credit: Gary Crabbe

Update November 2020 replaced missing video.

Tuesday, October 6, 2015

FAST - Five hundred meter Aperture Spherical Telescope - Big Chinese Radio Telescope

The Chinese are building a big radio telescope. All anyone seems to be talking about is how they can look for alien civilizations (radio broadcasts) from the other side of the universe. What they don't mention is that it could also be used as a RADAR transmitter. With something this big they should be able to detect a soccer ball a thousand miles away, should anyone put a soccer ball a thousand miles up. Via Robert Scott Ladd.

Artist's rendering of completed reflector.

Satellite view of FAST site. They have made some progress since this photo was taken.
They are installing the triangular reflector panels starting from the center.

Satellite view of Arecibo Radio Observatory in Puerto Rico, done at the same scale as the one in China. You can see that FAST is considerably larger.

Wednesday, July 29, 2015

Litton

Charles Litton
Tex Thornton
Last week a couple of high powered radio telescopes managed to take some pictures of an asteroid passing near the Earth. I got to wondering just how they managed this, being as the asteroid (2011 UW 158) was millions of miles away. Seems they used a 20 terawatt radar signal which came from a pair of Litton Klystrons. A klystron is a device for generating high power microwaves. It's the big brother to the magnetron found in microwave ovens. But what's this 'Litton'? That name sounds vaguely familiar. Well, it should. It was a giant defense conglomerate. Started by Charles Litton, but driven to success by Tex Thornton. Tex was awarded the Presidential Medal of Freedom by President Ronald Reagan in October, 1981.

Actual information about the radar gear at Arecibo is sparse and hard to come by. The web site is sadly neglected. An inquiry to the Wikipedia Reference Desk finally produced a useful, if outdated, link. Makes me wonder if information on high powered radar is a matter of national security.