Hey Glen,
this is really cool stuff!
Tried to give this a bit of reach on Mastodon [1], but I'm far from the audience I used to
have on twitter.
It's pretty cool that a galvanized pail does the job so well, would have thought zinc
wouldn't be low-loss enough a surface coating, but was proven wrong by awesome results :)
The best case of being wrong!
I especially like that this is a solution that needs so little "craftiness" and seems
quite robust. Just drill a hole, watch (and then obviously like) a few videos and send
Glen an email to get a free feed :D
If I had one complaint, it's that you promise a shopping list in the appendix – but
there's no appendix!
I'd also state very early in the guide (maybe actually with a flashy yellow "sticker" on
the title page?) that it comes with video documentation (30 min in total[2]). I think
that's quite a relief to a teacher who doesn't want to risk building something new based
on text only, especially when it involves mechanical work!
Cheers,
Marcus
PS: I think if you're really going to leave it out in the weather, maybe add a Polymeric
Low-Absorption Small-Thickness Inherently Costefficient Best-fit Antenna enGulfing
(PLASTICBAG) radome?
[1] https://mastodon.social/@funkylab/110301361379949802
[2] For those wondering: these videos:
https://www.youtube.com/playlist?list=PLFMYhHhJW1VDYESTcHJIiwNbRQXWpFlyF
On 02.05.23 16:53, Glen Langston wrote:
Hello Aficionados!
We’ve just released a marvelous summary of how to build a “Pail of Milky Way”
horn radio telescope. This is described in LightWork memo 32.
https://github.com/WVURAIL/lightwork/blob/master/memos/LightWorkMemo032-PailOfMilkyWay-r5.pdf
The memo concludes with a plot of one day’s observations, showing
what you can see with a horn radio telescope. The Doppler shifted
Cygnus and Perseus Spiral arms of the Milky Way are visible.
Comments and improvements welcomed.
Data are all obtained using Gnuradio designs available from the DSPIRA web site.
https://github.com/WVURAIL/gr-radio_astro
Thanks to Kevin Bandura at WVU and the Green Bank Observatory Staff.
Cheers
Glen