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Photonic
United States
Приєднався 22 жов 2021
Exploring the world of astronomy with Kevin A. Wilson
ISS and Starlink Train
The video here shows the ISS (the bright dot) and a train of recently launched Starlink satellites. I had to enhance the video to make the train visible, which resulted in some artifacts at the bottom left caused by the near-full moon. I think the star on the right is Arcturus.
The video was taken at 9:54 pm on July 31, 2023, at the Pisgah Astronomical Research Institute.
The video was taken at 9:54 pm on July 31, 2023, at the Pisgah Astronomical Research Institute.
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Відео
Scanning the Galactic Plane
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Exploring amateur radio astronomy with a project to detect the hydrogen line in the Milky Way. The Society of Amateur Radio Astronomers: radio-astronomy.org/ Virgo Signal Processing Software: github.com/0xCoto/Virgo #astronomy #radioastronomy #hydrogenline
The Hydrogen Line in Radio Astronomy
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Exploring amateur radio astronomy with a project to detect the hydrogen line in the Milky Way. The Astronomical League: www.astroleague.org/ #astronomy #radioastronomy #hydrogenline
Radio Astronomy with the Itty Bitty Telescope
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A good first project for those interested in exploring radio astronomy.
A very good video sir Iam too interested in Radio astronomy and some day want to build a radio telescope Iam seeing this video for the first time and little bit late I hope you achieve a high degree of practice in Radio astronomy and some day amateur telescope like yours may catch a glimpse of far away universe and black holes at the centres of many galaxies just as today's event horizon telescope does
Can you transmit on the hydrogen line frequency?
I hope i can hear God through radio someday
i stumbled into your channel and I noticeed that its been two years that you have posted a video. I liked it anyway and I am wondering if you are going to make any other video
good
Very well done! More videos please.
ua-cam.com/video/sFT83ytHVo0/v-deo.htmlsi=jSMMML6PuZRs6itr
We are waiting for Pulsars!
Clear and loud! I like your projects and how you teach. Thank you!
Well done...
Hi. Great video. I hope you are all right. My question is how to make the calibration file? Close the receiver input with 50 Ohm load is ok. But what is the command line command that needs to do? I read the Virgo user manual but I didn't find it. Please tell me the
Oh come on now? You are punching things in on your computer. And voilà! We have no idea what you just did? You are using no screen capture software. You have no Body Cam to switch to. What? No little cheap digital switcher? And you are trying to aim a, Radio Telescope at the Milky Way? Not at the sun? Where I'm sure you would pick up lots of stuff. And whatever micro-or millimeter region? It's a lot of hash. All across the spectrum.. And smoke gets in your eyes. Along with gas and dust and the sun. In your dish. In its broad daylight out. The atmosphere is completely ionized. What do you think you're going to pick up from the Milky Way? That's making it through this electromagnetic hash from the sun? And then to have the audacity. Not to show us your software in operation. And to simply be describing what it's not necessarily doing? But wanting you to think so? Because somebody wrote an app to do that. Like any other computer game. I'll have to see if some voltage coming from your dish. It doesn't know what it's looking at. Neither do you. As you need to do it during the day. So you can see what you're doing? And so you can make pretend you are a Radio Astronomer? It's a computer game for kids. To learn about the cosmos. From an online database. And depending on how much sun you are picking up? You could be the big winner this week! And you will receive an official Telescope from Edmonds Scientific. We have, Jay here. To tell you all about it. It's the new. 6 inch, folded mirror design. Of the JWST. Write in your own Edmonds Telescope! Wait till you see the Stars. Spring to life! Right before your Right Angle Mind. When you see Donnie Trump pass before your eyes. And not a moment too soon. Before November. I hope. We all hope. I want to see Donnie collapse from a cardiac arrest. While debating Joe Biden. That would be Awesome! RemyRAD
Hey that's really cool. You are really knowledgeable. You are good. Almost like a Broadcast Engineer Ham. And it looks like you have had plenty. Of tickling technical courses. For your fancy. Radio Telescope.. That is so Awesome! Does it also get, C-Band Satellite TV? I just love this! And were you the guy? That Broke-In, as Imitation Max Headroom years ago? I just knew it was you! We've caught you! No I don't work for the FCC. I just want your Autograph. And so you're looking for Hydrogen? You know we also make it on earth? Right? You don't have to go far. Not even 93 million. Sony can do it for less. No baloney. Even Toyota. If you're not certain about a Honda? But you meet the Nicest People on a, Honda. Jet. That looks really nice if you can afford one or two. The kind Joey O'Steen would get so he could Minister God on his, elaborate vacations. Around the world. In his own private Jesus Jet. Powered by Jesus. For, Jesus. With Jesus's's's official Emissary Joey O'Steen. In the, Image of Jesus. With a tie. And beautiful Teeth. With beautiful caps. His beautiful poor Social Security only existence, parishioners. All paid for. And also to keep mud off of his Jesus carpets. After about 17 of the 2015 Hurricane, survivors. Tracked some mud on his Jesus carpets. Forcing his poor parishioners. To pay $7 million to re-carpet the entire place! Because you cannot be getting mud on Jesus carpets. Jesus said no! Do not do that to me on the floor. Of the 20,000 seat former NBA, MAGA Stadium Church. As it is also Lakeside. Lakeside Manor.. Lakeside, terrain. Terrain! Terrain! Pull up! Pull up! Terrain! And pledgor dollars today. To his flag. Of the United Church of Merica. And to their Reap Public. For witch it stooded. One Nature on to another. I declare my Country, Merica! Who we! Ye ha! And the Kanye,, you came in on! Trumpy Wins Again! Before the elections! Woo hoo! RemyRAD
Thank you.
Thanks for such a clear succinct presentation. You have very good teaching and comms skills
Send to back in time sengal possible
I realized that by the time I finished this video, I traveled over 26 thousand kilometers. I've gotta take a nap. Thanks for the great info. I've been reading Garrett M. Graff's book, UFO, THE INSIDE STORY OF THE GOVERNMENT'S SEARCH FOR ALIEN LIFE. He frequently discusses the attempt to recieve extraterrestrial signals via the hydrogen line. Your videos have helped me better understand the concept. Thank you!
превосходно
Excellent video, thank for sharing the good quality information. I'm pretty new in radioastronomy, and I considered a very, very interesting branch. I have some questions too about building a homemade rediotelescope: what is the minimum size of the dish? (I like to build it using a parabolic antenna), and I have to use a SDR too to see on a computer monitor? (or a spectrum analiser is useful too??), and the last, if is good to use a low noise amplifier too ? Thanks for you help. Have nice day!
Great video, simplistic explanation & a good starting point for amateur radio astro. Keep going!
HA!... a SmartPi case! I just got one of those
Hey dude I’m watching your all videos in 2024 why did you have stop making those video ?
Good explanations - very clear! Thanks for sharing.
Terminal on the waveguide that measures the electric plane. How are the calculations? Is half the wavelength or any half multiple of it?
This is a great introductory video on this topic! Nice work 👍🏻
Cloudy night fun!
Brilliant video, hope you have a whole series of these planned, discovery's, findings etc...this is absolutely fascinating and expands on the normal visual astronomy were flooded with on UA-cam ❤
This is such a cool project! A definite standout
So much passion in this video
Can I just say your videos are incredibly underrated, I've been taking small dips into radio astronomy and found your video on the hydrogen line hugely helpful. Keep up the great work man!
Hi, What is the link to the first video you made in making the radio telescope? I clicked on your Photonic header but did not see the first radio telescope link. Thank you.
It is the video entitled "The Hydrogen Line in Radio Astronomy" (ua-cam.com/video/IXFq02OK23s/v-deo.html)
It there a way to cause the spin flip? Or do you need a magnet bigger than an MRI?
For those comments about sound card requirement, Back in the 80's and early to mid 90's, before USB and SDRs, the sound card was very important to and how data was collected for both radio astronomy and hams . Maybe that's what he was thinking of. The Atari 400 computer was popular back then for this purpose (more for SETI then Ham's) because of the quality and ease of programming of it's sound chip relative to system price and it's data recorder used ordinary audio tapes too! (Before hard drives were smaller than your desk drawer and affordable)
*Aracebo & FAST can receive signals in a cone extending outwards above them. "Directly above" might be under-selling them a little. They focus on one part of the dish to receive signals from a particular angle. Interestingly I learned from wikipedia that this makes FAST's "receiving area" only 300m across.
3:24 An SDR software defined radio receiver has nothing to do with the computer's sound card. The RF detection and audio processing is all done in software. The soundcard is only needed to play the audio the software has detected.
Back in the 80's and early to mid 90's, before USB and SDRs, the sound card was very important and how data was collected for both radio astronomy and hams . Maybe that's what he was thinking of. The Atari 400 computer was especially popular back then because of the quality and ease of programming of it's sound chip relative to system price and it's data recorder used ordinary audio tapes too! (Before hard drives were smaller than your desk drawer and affordable)
@@petevenuti7355I'm sure what he was thinking about were the various soundcard modes still used in ham radio today such as FT8, Q65 (and the rest of the WSJT-X suite) and the older modes like PSK31, RTTY, AMTOR, etc (FLDigi as an example). But those don't have anything in particular to do with SDRs. We didn't really have soundcards on 8 bit computers in the 80s. Many had sound generating chips of various abilities, but most couldn't record and playback audio (with a very few exceptions). While there was certainly some specialized software for doing things like CW or RTTY back then, the soundcard modes didn't really become a thing until the 00s quite a while after soundcards appeared in PCs. It had to wait until processors were powerful enough to handle the CPU intensive real-time DSP those modes require.
@@stargazer7644 the 80' didn't have much, and yes the Atari didn't natively support audio in. 8-bit audio is only 255 levels of intensity and when sampled at hundreds of hz , but if you made 4 different TTL level meters filtering for 4 different frequencies... oh nevermind, it sucked.... But there was plenty of stuff in the 90's, I still have a few ISA m-audio cards (if you ran os\2 you could use 4 cards at once, that's 8 44khz channels or 4 88khz channels, still can't see why anyone would ever need more .. There were a bunch of digital audio data transmission by hams in the 90's. It started well before the 2000's Anyway, I was really just reminiscing about how they used Atari 400's for SETI. Amazing how much was done with those old 8-bit machines...
1:45 - Pyramidal horn antennas have gotten into dis-use not only by radio astronomers but also everywhere else in radio communication. Including radio amateurs. The reason is, although they are easy to design and build, the performance is rather poor for the amount of material used. Actually a cheap Wifi Yagi will beat the big horn shown here hands down. Even better is a small horn + old satellite dish. Probably a dish will allow to locate the milky way with good accuracy, givern its gain.
Exquisite nipples. Quite remarkable. 9.1/10
Watched
Here is an excellent resource of beginner level radio astronomy videos The videos are from members of SARA : Society of Amateur Radio Astronomy ua-cam.com/play/PLCEbOD5_znsmOAz8fcIIF9JC-qogFntQN.html Regards, Alex KK4VB
The Virgo Software looks to be really worth a look.
This is absolutely fantastic
The LSR(K) data velocity correction factor varies continuously. It is dependent on the Observers Long/Lat Location on Earth / Date / Time / RA and Dec position of the telescope and can vary ~ +- 30 Km/Sec each day ( sinusoidal). Ideas for a small Neutral Hydrogen ( H1 ) Radio Telescope Project ( presented this Summer : Society of Amateur Radio Astronomers conference SARA ) ua-cam.com/video/C6NCefVxNL8/v-deo.html
That's why I added code to the Virgo project that uses the time, lat/long, and other factors when calculating VLSR. Fortunately, the astropy library has methods that keep it from being too complicated.
By the way, thanks for adding the link to your talk. I missed the SARA conference this year.
@@BlueCordVideo Yes, that correction calculation is Not Trivial ! I initially used an on-line calculator w/ Excel to find a 2nd order poly fit curve. I now have a Matlab program from JJ Maintoux. Thanks for the ok on the link. Alex KK4VB I wish I had found your presentations a year or so ago. Excellent Material. One of the most difficult tasks in beginning Radio Astronomy is finding basic material .
Simply wonderful, the best practical information so far. So much info is too basic to do anything with or so complex you could build a star ship. 🤣 Thank you very much and you should make a radio telescope kit "book" and sell them at Barns and Noble. 😎 Please make more helpful astronomy videos.
wow! So in the very beginning of the 1st hydrogen atoms I guess there was no flipping unto millions of year later? 😎 Thank you very much. Brilliant video. Now I can start making plans to make my first radio telescope and figure out how to use it. Can you use an optical telescope to help point the wave guide?
Sir, I am using old computer.. It is not compatible with sdr software... So I am trying to buy new laptop, which able to support sdr softwares... Can you give any suggestion(recommend) for laptop which in affordable rate... A cheapest laptop.
Sir, I am using old computer.. It is not compatible with sdr software... So I am trying to buy new laptop... Can you give any suggestion(recommend) for laptop which in affordable rate..
Hey Kevin, your videos are super awesome and so helpful learning radio astronomy from scratch! I gonna build my own radio telescope from the infos I gathered from your Channel! Keep posting more videos! Thanks 😍
This is just fantastic. Exactly what I was looking for. I’m in astrophotography for just over the year now with my 80mm scope and all the gizmos attached. I was looking to get into radio astronomy with DIY project. I can’t wait to build one of my own. Thank you for creating this channel !!!
É incrível sua explicação, continue fazendo seus vídeos, estou construindo o meu radiotelescopio.
What are the connector used for this radio telescope (like example n type connector)?????.... And how many connector I need in each type to make this radio telescope..
The connector on the waveguide is an N-type. This is stepped down to an SMA connector, which is what both the LNA and SDR use. The SDR is this connected to the Raspberry Pi via USB.