Re: Pail of Milky Way Horn Radio Telescope

[Marcus D. Leech]

On 02/05/2023 19:17, Glen Langston wrote:
> Hi Marcus Leech (and Muller),
>
> Well you beat me to it!
>
> It’s great that you can pre-confirm my results.  I’ll have to look at the
> rest of your memos.   Do you mind if we cross-post your memo CERRA memo,
> as a LightWork memo too?  Maybe it will be better to just reference your memos
> on the LightWork page.  Just thinking while typing…
You can feel free to cross-post.  That was the original idea of our memo 
series.

> You produced a beautiful spectrum of the Milky Way, if you love that kind of 
> thing, like I do!
> Calibrating, by looking at the Ground, is pretty reliable and easy.
>
> Cheers
>
> Glen
>
>
> > On May 2, 2023, at 7:03 PM, Marcus D. Leech <patchvonbraun@gmail.com> wrote:
> >
> > On 02/05/2023 18:58, Marcus Müller wrote:
> > > 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
> > Some of this reminds me of the memo I published 1.5 years ago on a similar 
> > subject:
> >
> > http://www.ccera.ca/files/memos/ccera-memo-0014.pdf