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 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
Wide-field spectra at milky-way transit near Cygnus are generally pretty 
nice.

Here's a kind of "extremal" of these types of horn antenna:

https://photos.app.goo.gl/Kn49pWqQ3kiiZwTq8

We had that one built by a local sheet-metal/HVAC shop for under 
C$200.00.    The diameter at the exit is about 23"
  as I recall.

The plan was to use it to illuminate our sub-reflector at the 
observatory, but we had a change of heart after we realized
  that plan was going to require a LOT of "civil engineering".   So, we 
converted the 12.8m dish to prime focus, and that
  well-built (but kinda 'amateur') horn is just sitting there.