Understanding Radio Telescopes: Dr John Morgan
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- เผยแพร่เมื่อ 24 ก.ค. 2024
- Curtin University "Super Fellow" John Morgan explains what how radio telescopes are an essential tool for looking into the mysteries of the universe. He talks about the awesome Square Kilometre Array, and the role of Curtin know-how in creating the associated Murchison Widefield Array.
This lecture was held on Wednesday 27 August 2014.
Discover more: astronomy.curtin.edu.au/
For more by Curtin Alumni: alumni.curtin.edu.au
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As a would-be amateur radio astronomer, this is the best introduction I've found. Complex concepts made clear to the layperson. Great presentation all around.
We're so glad it was helpful!
This is one of the best youtube vids on radio astronomy. Thank you for sharing with us!
instablaster...
Bravo, Dr. John and thank you!
Great presentation. I was very curious about, and happy to learn how the detector works. Thanks to this video, 18 yrs after this lecture, on the other side of the world (US east coast), I have learned quite a bit. Thank you.
You're welcome Jeff! Glad it was helpful!
Awesome explanation. Really the best. Thank you.
That was a superb watch. Complex concepts made easy(ish!). Thank you. :)
Glad you enjoyed it!
Good information. Thank you
I've never been clear on how a radio telescope works and I've tried watching a few other videos that explain it. They completely failed to get through to me. This lecture did the trick, though! Excellent presentation by a top tier speaker. Thanks for the info!
We're thrilled to hear that our lecture on radio telescopes helped you understand the topic! Thanks for watching and learning with us! 😊📡🌌
An excellent presentation. Thank you.
I am an amateur radio operator, as well as an aspiring amateur radio astronomer, and I get my information from the NASA radio Jove website. I am more interested in emissions from the planet Jupiter as they are actually kind of cool sounding, and creepy sounding at the same time.
NOt one word how EM are converted to viewable imagery, exactly what is the application used to image radio waves?
i serch for the same application used to image radio waves
There is no general purpose application for that, the data from radio telescopes is collected and processed using their own generated code/application. That image is an intensity map (single frequency or small set of frequencies) of the signal collected and since the signal is not a visible spectrum signal so colors in the image are totally dependent on the person/team/code/application processing it.
Mind you radio telescopes works differently then optical telescope but the final images are produced to have a equal comparison of space we're observing it gives you deeper information of the same space.
Like night vision/thermal imaging camera and normal camera clicking picture of the same area in night.
Does anyone know if Radio Telescopes can detect pH of an environment?
The sound of the static on the radio is quite relaxing
thanks sir
I'm here because I'm reading Contact, by Carl Sagan :)
Me too!!
Erick Crowne Nice to see more people reading it :D
Very good book, and movie :-)
I'm here so I can start building my own radio telescope, I want to underst how and why before I know.
Is there anyone in the audience?
I never saw the camera EVER look at the audience. The applause sounds just like the the TV.
you're overanalysing, better to play overwatch
@@MMAisFedor are you jealous that i have amazing ability of analyzing.
@@MrPeterxr6t is that the longest wait for a UT reply ever ?
The Operational Amplifier, or Instrument Amplifier design, eliminates that hiss caused by the circuitry utilizing Common Mode Rejection. We need to redesign these clear through to utilize the highest frequency response transistors available, and use factors of gain controlled stage per stage, with Common Mode Rejection Available, stage per stage with tunable RF Equalizer, for RF, not audio band. Each stage a linear amp of that said detail.
Gain one electron to the watt.
With three, you can triangulate to an image with a parabolic reflector. At the focal plane.
It makes the big ones look nice. 1/4 wavelength spacing, equally spaced.
I want to pick Kepler targets, and some spectral analysis, photon counting for long exposures looking for artificial sources but, not forgetting Photon Scattering to Scale. What can a rocky body not do without intelligent life.
Very good 👍👌 point👏🆗
Never knew that MWA was built by students, definitely something to try
at 23:04 i didn't understand the reason behind 2000, anyone cares to explain ???
He really means "2000 odd" which essentially means 2048 individual spiders
All extrasolar information is electromagnetic? What about cosmic rays and neutrinos?
Neutrinos are hard to detect
As they don't interact with matter
@@heta330 They do interact - RARELY! :)
interesting stuff
In trying to learn radio telescopes the info goes from million dollar projects to out of the junk room stuff. 😎 Need some ebay out of the box radio-astronomy hobby kits for quick results.
TH-cam is not the best way to get started. You actually need to leave your house and start at your local library. Great wishes. You will have fun 👍
cool as all hell
😊
I'm here because i live in Parkes, NSW. We have Big Radio Telescope 🔭😇
Lies
31:48
I listened, i found a Antique Radio
Gravity waves detected !
2017!
This guy is the model of a typical werewolf.
Wonder why he likes astronomy so much...
All Australian astronomers are Weredingoes !
Thankyou🖖🇭🇲
🔭⚡✨🖤✨⚡🔭
Stop your hate
I force my children to listen to radio at least 20 hours a day. They must transcribe what they hear. 4 hours for sleeping. This is the only way to show them how to learn.
Lol. Save the spoon, spoil the child
I am here because China's FAST is about to turn on.
Straight out of Phobos
Martians With Attitude
MWA straight outta curtin
dear sir, your comment made my day. i did some digging to find my password for this old account just to congratulate you. respect
@@Nymeriaa7 you are welcome !
What if a patent *prevented* your scientific exploration instead of helped fund it?
Radio telescope book Bank branch
Radio telescope converter box
How many times does he say ahh. Any guess?
Indie TED Talk.
yeah really complicated instead of light and a few mirrors or a lens they use a tx rx transmitter and a dish and they receive radio signals instead of light lmao
Hi, Nice video, I want to build my own radio teliscope, my aim is to reproduce the experment which proves big bang theory, can this experiment done using Software defined radio and on small budget like under 100$, pls guide me
After retiring from the US government (NOAA) I decided to build Dicke radiometers using parts readily available through the internet. In summary, after much experimentation I was able to construct two small radiometers for about $100 each. One operates at about 4 GHz and the other at 12 GHz. The instruments have a noise sensitivity of 1K using a 0.1 second integration time. The instruments contain a feed horn, transducer, pin diode switch, isolator, LNB, temperature compensated detector, AC amplifier and synchronous detector. The transducer, switch and LNB are commercial components while all other components were built using standard circuits. I built the cabinet and feed horn using sheet metal. I can supply a block diagram and circuit diagram if you are interested.
Norman Grody the Earth is Flat. You are all wasting your talents on this stuff.
Heeeeeeeeeeeeeeeelp ..........to much ummmmzzzzzzzz
@ 37.097.01 years he plans on talking about things nobody has ever heard of.
Umm...
Why isn't the Universe, a black hole a long time ago, where's the middle? Shouldn't the biggest black hole be there? LOL Maniacal!
We came from a place, light couldn't shine.
Something bigger, made me up.
this is not great mystery to learn
The Earth is Flat. You are all wasting your talents on this stuff. Sigh.
exactly, and we're the aliens, and humans don't exist, and mars is earth's moon, and sun is actually a black hole.
poor guy is so knowledgeable but not a good speaker at all. too many "ummms"
If there's a choice between content and smooth presentation, then I'll take the content.
Ahhh....he....ahhmmm..he needs some....ahhmmm...classes in...ummmm.... public....aaahhhh ....public speaking.......nice guy...but ummmm....he shouldn't be narrating....aahmmmm....videos.
I'm a teacher which means I speak a hell of a lot for living; I work at an international school here in Thailand. I love Astronomy, and take my 8th graders through a section on it each year. I moderate at several Astronomy related sites, I have a background in Electronics (military Microwave Communications, so I have a slight edge on understanding radio telescopes (but was hoping to learn more) ) and so it honestly shames me that I could not finish the vid. The organization that put out this vid, truly, should find another moderator. Let this guy write the script maybe, for technical info, but let someone else read it. Sorry, tough love.
David Schmidt I couldn’t finish it either. Like listening to hiccups.
"Radio, um, telescopes, uh, are, um, radiowaves, uh, um, elctro, um, can't, um, speak, uh, properly, um, without, um, saying, um, uh."
I'm sure this guy is intelligent and all but he seriously needs to take elocution lessons to stop himself pausing between his words and saying 'um' or 'uh' because it sounds very bad and distracting like a speech impediment.
Watched it all, didn't notice
This um guy um needs to um work um on um his um um public um speaking um skills. um.
hmmm ummmm
lecture for teenagers again..