dspira-lessons/forum/astronomy/ #5
Comments
|
Post Astronomy questions here! |
astronomy is awesome |
|
What kind of DSP filters do they use on the FAST telescope in China? |
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Actually I'm not sure if it's in real-time or not. There is another good video that show them detecting pulsars here. |
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There is another good video here. |
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The diy radio telescope instructions are awesome and nicely detailed! I want to build one and listen to to the Milky Way. Can someone direct me to the instructions for computer portion of the setup to hear the Milky Way? |
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Hi China Blue,
Thanks for your email.
All the code is on GitHub.com
The first step is installing gnu radio on your computer. There are
many online documents. You’ll have to see what works for your computer
and operating system.
The Wiki describes the method for putting the code on any computer:
https://github.com/WVURAIL/gr-radio_astro/wiki/Installing-gr-radio_astro
This is for different versions of the code compatible with gnu radio 3.7 and 3.8
If you have a raspberry pi 4 computer you can download a complete version of the
operating system with everything installed.
See the installation guide and latest version of the operating system in this
online directory:
https://drive.google.com/drive/folders/1t2soWvGIgze7wg-7QGlVgB0m3Q-BR3C-?usp=sharing
Good Luck.
Glen
… On Feb 15, 2021, at 7:56 AM, China Blue ***@***.***> wrote:
The diy radio telescope instructions are awesome and nicely detailed! I want to build one and listen to to the Milky Way. Can someone direct me to the instructions for computer portion of the setup to hear the Milky Way?
Ty.
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Thanks Glen,
I reviewed all of the material on your site. It is very helpful. Yes, I already
have the directions for installing GnuRadio.
But what I cannot find is any documentation that describes how to setup
the software to listen in to the Milky Way. I don't see it online or at the
GitHub link you sent.
Does it exist?
Ty
Sincerely,
China Blue
http://www.chinablueart.com
On Mon, Feb 15, 2021, 9:05 AM Glen Langston <[email protected]>
wrote:
…
Hi China Blue,
Thanks for your email.
All the code is on GitHub.com
The first step is installing gnu radio on your computer. There are
many online documents. You’ll have to see what works for your computer
and operating system.
The Wiki describes the method for putting the code on any computer:
https://github.com/WVURAIL/gr-radio_astro/wiki/Installing-gr-radio_astro
This is for different versions of the code compatible with gnu radio 3.7
and 3.8
If you have a raspberry pi 4 computer you can download a complete version
of the
operating system with everything installed.
See the installation guide and latest version of the operating system in
this
online directory:
https://drive.google.com/drive/folders/1t2soWvGIgze7wg-7QGlVgB0m3Q-BR3C-?usp=sharing
Good Luck.
Glen
> On Feb 15, 2021, at 7:56 AM, China Blue ***@***.***>
wrote:
>
>
> The diy radio telescope instructions are awesome and nicely detailed! I
want to build one and listen to to the Milky Way. Can someone direct me to
the instructions for computer portion of the setup to hear the Milky Way?
> Ty.
>
> —
> You are receiving this because you are subscribed to this thread.
> Reply to this email directly, view it on GitHub, or unsubscribe.
>
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Depending on the exact path you’ve followed, there are instructions here:
https://wvurail.org/dspira-lessons/categories/horn-operation/ <https://wvurail.org/dspira-lessons/categories/horn-operation/>
… On Feb 15, 2021, at 9:16 AM, China Blue ***@***.***> wrote:
Thanks Glen,
I reviewed all of the material on your site. It is very helpful. Yes, I already
have the directions for installing GnuRadio.
But what I cannot find is any documentation that describes how to setup
the software to listen in to the Milky Way. I don't see it online or at the
GitHub link you sent.
Does it exist?
Ty
Sincerely,
China Blue
http://www.chinablueart.com
On Mon, Feb 15, 2021, 9:05 AM Glen Langston ***@***.***>
wrote:
>
> Hi China Blue,
>
> Thanks for your email.
> All the code is on GitHub.com
>
> The first step is installing gnu radio on your computer. There are
> many online documents. You’ll have to see what works for your computer
> and operating system.
>
> The Wiki describes the method for putting the code on any computer:
>
> https://github.com/WVURAIL/gr-radio_astro/wiki/Installing-gr-radio_astro
>
> This is for different versions of the code compatible with gnu radio 3.7
> and 3.8
>
> If you have a raspberry pi 4 computer you can download a complete version
> of the
> operating system with everything installed.
>
> See the installation guide and latest version of the operating system in
> this
> online directory:
>
>
> https://drive.google.com/drive/folders/1t2soWvGIgze7wg-7QGlVgB0m3Q-BR3C-?usp=sharing
>
> Good Luck.
>
> Glen
>
>
>
>
> > On Feb 15, 2021, at 7:56 AM, China Blue ***@***.***>
> wrote:
> >
> >
> > The diy radio telescope instructions are awesome and nicely detailed! I
> want to build one and listen to to the Milky Way. Can someone direct me to
> the instructions for computer portion of the setup to hear the Milky Way?
> > Ty.
> >
> > —
> > You are receiving this because you are subscribed to this thread.
> > Reply to this email directly, view it on GitHub, or unsubscribe.
> >
> > [ { ***@***.***": "http://schema.org", ***@***.***": "EmailMessage",
> "potentialAction": { ***@***.***": "ViewAction", "target": "
> #5 (comment)",
> "url": "
> #5 (comment)",
> "name": "View Issue" }, "description": "View this Issue on GitHub",
> "publisher": { ***@***.***": "Organization", "name": "GitHub", "url": "
> https://github.com" } } ]
>
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Kevin,
I can see that I will find a setup example under: Determining a Velocity
Curve of the Milky Way Galaxy.
Is there documentation or someone that can advise me on how to set up the
software to actually hear the result?
Ty.
* China Blue*
chinablueart <http://www.chinablueart.com/>
On Mon, Feb 15, 2021 at 9:37 AM Kevin Bandura <[email protected]>
wrote:
… Depending on the exact path you’ve followed, there are instructions here:
https://wvurail.org/dspira-lessons/categories/horn-operation/ <
https://wvurail.org/dspira-lessons/categories/horn-operation/>
> On Feb 15, 2021, at 9:16 AM, China Blue ***@***.***>
wrote:
>
>
> Thanks Glen,
>
> I reviewed all of the material on your site. It is very helpful. Yes, I
already
> have the directions for installing GnuRadio.
>
> But what I cannot find is any documentation that describes how to setup
> the software to listen in to the Milky Way. I don't see it online or at
the
> GitHub link you sent.
>
> Does it exist?
>
> Ty
>
>
> Sincerely,
>
> China Blue
> http://www.chinablueart.com
>
>
> On Mon, Feb 15, 2021, 9:05 AM Glen Langston ***@***.***>
> wrote:
>
> >
> > Hi China Blue,
> >
> > Thanks for your email.
> > All the code is on GitHub.com
> >
> > The first step is installing gnu radio on your computer. There are
> > many online documents. You’ll have to see what works for your computer
> > and operating system.
> >
> > The Wiki describes the method for putting the code on any computer:
> >
> >
https://github.com/WVURAIL/gr-radio_astro/wiki/Installing-gr-radio_astro
> >
> > This is for different versions of the code compatible with gnu radio
3.7
> > and 3.8
> >
> > If you have a raspberry pi 4 computer you can download a complete
version
> > of the
> > operating system with everything installed.
> >
> > See the installation guide and latest version of the operating system
in
> > this
> > online directory:
> >
> >
> >
https://drive.google.com/drive/folders/1t2soWvGIgze7wg-7QGlVgB0m3Q-BR3C-?usp=sharing
> >
> > Good Luck.
> >
> > Glen
> >
> >
> >
> >
> > > On Feb 15, 2021, at 7:56 AM, China Blue ***@***.***>
> > wrote:
> > >
> > >
> > > The diy radio telescope instructions are awesome and nicely
detailed! I
> > want to build one and listen to to the Milky Way. Can someone direct
me to
> > the instructions for computer portion of the setup to hear the Milky
Way?
> > > Ty.
> > >
> > > —
> > > You are receiving this because you are subscribed to this thread.
> > > Reply to this email directly, view it on GitHub, or unsubscribe.
> > >
> > > [ { ***@***.***": "http://schema.org", ***@***.***": "EmailMessage",
> > "potentialAction": { ***@***.***": "ViewAction", "target": "
> >
#5 (comment)
",
> > "url": "
> >
#5 (comment)
",
> > "name": "View Issue" }, "description": "View this Issue on GitHub",
> > "publisher": { ***@***.***": "Organization", "name": "GitHub", "url": "
> > https://github.com" } } ]
> >
> > —
> > You are receiving this because you commented.
> > Reply to this email directly, view it on GitHub
> > <
#5 (comment)
>,
> > or unsubscribe
> > <
https://github.com/notifications/unsubscribe-auth/AD5CHEQFAPQUQFJNXE63PK3S7ESZHANCNFSM4T36M7EA
>
> > .
> >
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Hello Ty,
You’ve asked an interesting question concerning hearing the Milky Way. The frequencies
are much too high for the human ear. However you could imagine
some sort of sound being mapped to the structure of the arms of the Milky Way.
I’ve previously tried adding a tone matching the average doppler shift of the
arms, but the results were not inspiring.
An artist would have to decide what kind of mapping they’d like to correspond
to a spectrum with shape like our typical observations. Attached is a 24 hour
observation with 1 hour averages of the observations.
Suggestions welcome.
Regards
Glen
… On Feb 15, 2021, at 9:45 AM, China Blue ***@***.***> wrote:
Kevin,
I can see that I will find a setup example under: Determining a Velocity
Curve of the Milky Way Galaxy.
Is there documentation or someone that can advise me on how to set up the
software to actually hear the result?
Ty.
* China Blue*
chinablueart <http://www.chinablueart.com/>
On Mon, Feb 15, 2021 at 9:37 AM Kevin Bandura ***@***.***>
wrote:
> Depending on the exact path you’ve followed, there are instructions here:
>
> https://wvurail.org/dspira-lessons/categories/horn-operation/ <
> https://wvurail.org/dspira-lessons/categories/horn-operation/>
>
>
>
> > On Feb 15, 2021, at 9:16 AM, China Blue ***@***.***>
> wrote:
> >
> >
> > Thanks Glen,
> >
> > I reviewed all of the material on your site. It is very helpful. Yes, I
> already
> > have the directions for installing GnuRadio.
> >
> > But what I cannot find is any documentation that describes how to setup
> > the software to listen in to the Milky Way. I don't see it online or at
> the
> > GitHub link you sent.
> >
> > Does it exist?
> >
> > Ty
> >
> >
> > Sincerely,
> >
> > China Blue
> > http://www.chinablueart.com
> >
> >
> > On Mon, Feb 15, 2021, 9:05 AM Glen Langston ***@***.***>
> > wrote:
> >
> > >
> > > Hi China Blue,
> > >
> > > Thanks for your email.
> > > All the code is on GitHub.com
> > >
> > > The first step is installing gnu radio on your computer. There are
> > > many online documents. You’ll have to see what works for your computer
> > > and operating system.
> > >
> > > The Wiki describes the method for putting the code on any computer:
> > >
> > >
> https://github.com/WVURAIL/gr-radio_astro/wiki/Installing-gr-radio_astro
> > >
> > > This is for different versions of the code compatible with gnu radio
> 3.7
> > > and 3.8
> > >
> > > If you have a raspberry pi 4 computer you can download a complete
> version
> > > of the
> > > operating system with everything installed.
> > >
> > > See the installation guide and latest version of the operating system
> in
> > > this
> > > online directory:
> > >
> > >
> > >
> https://drive.google.com/drive/folders/1t2soWvGIgze7wg-7QGlVgB0m3Q-BR3C-?usp=sharing
> > >
> > > Good Luck.
> > >
> > > Glen
> > >
> > >
> > >
> > >
> > > > On Feb 15, 2021, at 7:56 AM, China Blue ***@***.***>
> > > wrote:
> > > >
> > > >
> > > > The diy radio telescope instructions are awesome and nicely
> detailed! I
> > > want to build one and listen to to the Milky Way. Can someone direct
> me to
> > > the instructions for computer portion of the setup to hear the Milky
> Way?
> > > > Ty.
> > > >
> > > > —
> > > > You are receiving this because you are subscribed to this thread.
> > > > Reply to this email directly, view it on GitHub, or unsubscribe.
> > > >
> > > > [ { ***@***.***": "http://schema.org", ***@***.***": "EmailMessage",
> > > "potentialAction": { ***@***.***": "ViewAction", "target": "
> > >
> #5 (comment)
> ",
> > > "url": "
> > >
> #5 (comment)
> ",
> > > "name": "View Issue" }, "description": "View this Issue on GitHub",
> > > "publisher": { ***@***.***": "Organization", "name": "GitHub", "url": "
> > > https://github.com" } } ]
> > >
> > > —
> > > You are receiving this because you commented.
> > > Reply to this email directly, view it on GitHub
> > > <
> #5 (comment)
> >,
> > > or unsubscribe
> > > <
> https://github.com/notifications/unsubscribe-auth/AD5CHEQFAPQUQFJNXE63PK3S7ESZHANCNFSM4T36M7EA
> >
> > > .
> > >
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> >
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Glen,
Even though the frequencies are too high for human ears they can be
sonified by shifting them to human frequency range to produce an acoustic
result.
Would you mind sharing with me the method you used to produce tone
matching. I would like to start with that to familiarize myself first with
the software. From there I might be able to come up with something
acoustically more interesting.
Oops your attachments didn't come through.
Sincerely,
China Blue
http://www.chinablueart.com
Former Norman Prince Neurosciences Institute Artist in Residence
Founding Director The Engine Institute
Advisor to Congressman Langevin's "Art & Culture Committee" and the state
of Rhode Island's "Arts & Health" Advisory group
On Mon, Feb 15, 2021, 12:48 PM Glen Langston <[email protected]>
wrote:
… Hello Ty,
You’ve asked an interesting question concerning hearing the Milky Way. The
frequencies
are much too high for the human ear. However you could imagine
some sort of sound being mapped to the structure of the arms of the Milky
Way.
I’ve previously tried adding a tone matching the average doppler shift of
the
arms, but the results were not inspiring.
An artist would have to decide what kind of mapping they’d like to
correspond
to a spectrum with shape like our typical observations. Attached is a 24
hour
observation with 1 hour averages of the observations.
Suggestions welcome.
Regards
Glen
> On Feb 15, 2021, at 9:45 AM, China Blue ***@***.***>
wrote:
>
>
> Kevin,
>
> I can see that I will find a setup example under: Determining a Velocity
> Curve of the Milky Way Galaxy.
> Is there documentation or someone that can advise me on how to set up the
> software to actually hear the result?
>
> Ty.
>
> * China Blue*
> chinablueart <http://www.chinablueart.com/>
>
>
>
>
>
>
> On Mon, Feb 15, 2021 at 9:37 AM Kevin Bandura ***@***.***>
> wrote:
>
> > Depending on the exact path you’ve followed, there are instructions
here:
> >
> > https://wvurail.org/dspira-lessons/categories/horn-operation/ <
> > https://wvurail.org/dspira-lessons/categories/horn-operation/>
> >
> >
> >
> > > On Feb 15, 2021, at 9:16 AM, China Blue ***@***.***>
> > wrote:
> > >
> > >
> > > Thanks Glen,
> > >
> > > I reviewed all of the material on your site. It is very helpful.
Yes, I
> > already
> > > have the directions for installing GnuRadio.
> > >
> > > But what I cannot find is any documentation that describes how to
setup
> > > the software to listen in to the Milky Way. I don't see it online or
at
> > the
> > > GitHub link you sent.
> > >
> > > Does it exist?
> > >
> > > Ty
> > >
> > >
> > > Sincerely,
> > >
> > > China Blue
> > > http://www.chinablueart.com
> > >
> > >
> > > On Mon, Feb 15, 2021, 9:05 AM Glen Langston <
***@***.***>
> > > wrote:
> > >
> > > >
> > > > Hi China Blue,
> > > >
> > > > Thanks for your email.
> > > > All the code is on GitHub.com
> > > >
> > > > The first step is installing gnu radio on your computer. There are
> > > > many online documents. You’ll have to see what works for your
computer
> > > > and operating system.
> > > >
> > > > The Wiki describes the method for putting the code on any computer:
> > > >
> > > >
> >
https://github.com/WVURAIL/gr-radio_astro/wiki/Installing-gr-radio_astro
> > > >
> > > > This is for different versions of the code compatible with gnu
radio
> > 3.7
> > > > and 3.8
> > > >
> > > > If you have a raspberry pi 4 computer you can download a complete
> > version
> > > > of the
> > > > operating system with everything installed.
> > > >
> > > > See the installation guide and latest version of the operating
system
> > in
> > > > this
> > > > online directory:
> > > >
> > > >
> > > >
> >
https://drive.google.com/drive/folders/1t2soWvGIgze7wg-7QGlVgB0m3Q-BR3C-?usp=sharing
> > > >
> > > > Good Luck.
> > > >
> > > > Glen
> > > >
> > > >
> > > >
> > > >
> > > > > On Feb 15, 2021, at 7:56 AM, China Blue <
***@***.***>
> > > > wrote:
> > > > >
> > > > >
> > > > > The diy radio telescope instructions are awesome and nicely
> > detailed! I
> > > > want to build one and listen to to the Milky Way. Can someone
direct
> > me to
> > > > the instructions for computer portion of the setup to hear the
Milky
> > Way?
> > > > > Ty.
> > > > >
> > > > > —
> > > > > You are receiving this because you are subscribed to this thread.
> > > > > Reply to this email directly, view it on GitHub, or unsubscribe.
> > > > >
> > > > > [ { ***@***.***": "http://schema.org", ***@***.***": "EmailMessage",
> > > > "potentialAction": { ***@***.***": "ViewAction", "target": "
> > > >
> >
#5 (comment)
> > ",
> > > > "url": "
> > > >
> >
#5 (comment)
> > ",
> > > > "name": "View Issue" }, "description": "View this Issue on GitHub",
> > > > "publisher": { ***@***.***": "Organization", "name": "GitHub", "url": "
> > > > https://github.com" } } ]
> > > >
> > > > —
> > > > You are receiving this because you commented.
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> > > > <
> >
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> > >,
> > > > or unsubscribe
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> > .
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Hello
Here’s the attachment.
Glen
…
Glen,
Even though the frequencies are too high for human ears they can be
sonified by shifting them to human frequency range to produce an acoustic
result.
Would you mind sharing with me the method you used to produce tone
matching. I would like to start with that to familiarize myself first with
the software. From there I might be able to come up with something
acoustically more interesting.
Oops your attachments didn't come through.
Sincerely,
China Blue
http://www.chinablueart.com
|
|
Hello, I'm preparing to have my students do the Velocity Curve activity for Quadrants II and III. The notes say to assign galactic coordinates to students and then have them use Stellarium to find the corresponding azimuth and elevation, but I can't seem to find a way to get Stellarium to do that conversion. Am I missing something? Is there another convenient way to do the conversion? Thanks, |
|
Hi Evan, In Stellarium you can turn on the galactic equator in the viewing settings (and even the galactic grid, but I find the galactic equator alone works best because usually we want to scan along the galactic plane). The students can adjust the time of viewing in Stellarium, find the galactic longitude they want, and then click on the nearest object to that longitude. The azimuth and elevation will be listed on the upper left side of the screen (along with a lot of other info). I hope this helps. Good luck! John Makous |
|
Thanks, John. I didn't realize there was a pop-up menu on the side of the screen. I am assuming this is not available in the web version, correct?
…________________________________
From: JohnMakous ***@***.***>
Sent: Thursday, November 17, 2022 4:39 PM
To: WVURAIL/dspira-lessons ***@***.***>
Cc: Evan Halstead ***@***.***>; Comment ***@***.***>
Subject: Re: [WVURAIL/dspira-lessons] dspira-lessons/forum/astronomy/ (#5)
Hi Evan,
In Stellarium you can turn on the galactic equator in the viewing settings (and even the galactic grid, but I find the galactic equator alone works best because usually we want to scan along the galactic plane). The students can adjust the time of viewing in Stellarium, find the galactic longitude they want, and then click on the nearest object to that longitude. The azimuth and elevation will be listed on the upper left side of the screen (along with a lot of other info).
I hope this helps. Good luck!
John Makous
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I am not familiar with the web version. I just looked at it, and it seems
pretty limited. I couldn't see how to view galactic coordinates. Also, it
seems that it shows information for only a limited number of objects. You
can view the azimuthal grid and the Milky Way visibly. So I suppose it
could be used if needed. But since Stellarium is free and open source, I
recommend downloading it and using it on a computer.
Let me know how it turns out.
John
…On Fri, Nov 18, 2022 at 1:51 PM ehalstea ***@***.***> wrote:
Thanks, John. I didn't realize there was a pop-up menu on the side of the
screen. I am assuming this is not available in the web version, correct?
________________________________
From: JohnMakous ***@***.***>
Sent: Thursday, November 17, 2022 4:39 PM
To: WVURAIL/dspira-lessons ***@***.***>
Cc: Evan Halstead ***@***.***>; Comment ***@***.***>
Subject: Re: [WVURAIL/dspira-lessons] dspira-lessons/forum/astronomy/ (#5)
Hi Evan,
In Stellarium you can turn on the galactic equator in the viewing settings
(and even the galactic grid, but I find the galactic equator alone works
best because usually we want to scan along the galactic plane). The
students can adjust the time of viewing in Stellarium, find the galactic
longitude they want, and then click on the nearest object to that
longitude. The azimuth and elevation will be listed on the upper left side
of the screen (along with a lot of other info).
I hope this helps. Good luck!
John Makous
—
Reply to this email directly, view it on GitHub<
#5 (comment)>,
or unsubscribe<
https://github.com/notifications/unsubscribe-auth/AG2PGHJFCE3SBDWHNLRRZNDWI2QYHANCNFSM4T36M7EA
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Hello Dspira Group, What is the process for pointing the horn telescope? Do I choose the coordinate az=180° or az=0° and then have the alt = 30,45,60, or 75 etc? If so do I need the galactic coordinates for data analysis? Thank You, Vic |
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Hi Vic, I recommend using Stellarium. It is a free, open source planetarium for your computer. You can view the sky from your location at any point in time - present, past or future. It's a great tool for planning an observation. When you click on an object in the sky, it gives several different coordinates of that point, including az and elevation as well as galactic coordinates. I hope this helps. John |
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Hi John,
Thank You for that information and quick response. Continued success with the great work that you do.
All the Best,
Vic
On Friday, September 8, 2023 at 07:13:58 PM CDT, JohnMakous ***@***.***> wrote:
Hi Vic,
I recommend using Stellarium. It is a free, open source planetarium for your computer. You can view the sky from your location at any point in time - present, past or future. It's a great tool for planning an observation. When you click on an object in the sky, it gives several different coordinates of that point, including az and elevation as well as galactic coordinates.
I hope this helps.
John
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Astronomy Forum – Digital Signal Processing in Radio Astronomy - Lessons Portal
Lots of lessons
https://wvurail.org//dspira-lessons/forum/astronomy/
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