[LMB] OT: Arecibo

Markus Baur baur at chello.at
Tue Nov 24 08:09:10 GMT 2020


Am 24.11.2020 um 02:34 schrieb WILLIAM A WENRICH:
> Two points:
>
> Check out the very large array in NM.

yes .. a very different design ..

the advantage of the VLA vs. Arecibo is a much larger field of view - at 
a guess everythnig above 20° above the horizon .. and a better 
resolution due to its larger diameter ..

but its collction area is only 13250 m2 vs. 73000 m2 of the Arecibo 
observatory, so its sensitivity is lower

 > When talking about smelting on the moon, solar electric was 
mentioned. How about solar mirrors?

it is being talked about in the trade ... as a starting point there are 
ideas of sintering / melting the regolith into useful hard shapes ... 
one idea has them brickshaped, with nubs on the topside and recesses on 
the bottom side for better stability and eas of assemby (i wonder if 
Luna City will have to pay royalties to Denmark)

servus

markus

> Christian, husband, father, granddaddy, son, American. Here I stand. I can do no other. God help me.
> William A Wenrich
> ________________________________
> From: Lois-Bujold <lois-bujold-bounces at lists.herald.co.uk> on behalf of Lois Aleta Fundis <loisaletafundis at gmail.com>
> Sent: Monday, November 23, 2020 2:27:26 PM
> To: Discussion of the works of Lois McMaster Bujold. <lois-bujold at lists.herald.co.uk>
> Subject: Re: [LMB] OT: Arecibo
>
> Somewhat related.to this thread:
>
> Here in West Virginia, we have our own radio-telescope at Green Bank, in
> the center of the state deep, in the Appalachian Mountains. And we are
> apparently soon to have another!
>
> This is an excerpt from an article in today's *Charleston Gazette*, the
> newspaper from our state capital:
>
> "A new radio telescope linked to similar telescopes at two sites in Canada
> will be built at the Green Bank Observatory, following the National Science
> Foundation’s award of a $1.7 million grant to a WVU professor studying Fast
> Radio Bursts. The horizontal, 60-meter-long, 20-meter-wide telescope
> features a cylindrical profile similar to a snowboarding half-pipe.
> According to iNFOnews.ca <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Finfonews.ca%2F&data=04%7C01%7C%7Cfbae684c9ad646b40d7408d88ff72934%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637417639002189491%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=lmTxYJhXbhnwRfMvhVFmJSMKuDoC7D1ig%2BWG%2BNMNKBU%3D&reserved=0>, it will operate in concert
> with similar “Outrigger” telescopes planned for construction at the
> Algonquin Radio Observatory in Ontario and at a site near Allenby, British
> Columbia.
>
> "The three Outrigger scopes will in turn connect with the similar, but much
> larger, CHIME (Canadian Hydrogen Intensity Mapping Experiment)
> radio-telescope in operation since 2017 at the Dominion Radio Astrophysical
> Observatory near Kaleden, British Columbia. The Outrigger telescopes will
> triangulate the positions of targeted objects, allowing the CHIME telescope
> to pinpoint their locations.
>
> "The grant to build the new telescope at Green Bank was awarded to Kevin
> Bandura, an assistant professor in the Lane Department of Computer Science
> and Electrical Engineering at WVU.
>
> "Bandura is part of a CHIME research team that has detected hundreds of
> Fast Radio Bursts in the three years the Canadian radio-telescope has been
> in operation. Prior to that time, astronomers had detected about 50 of the
> intense flashes of mysterious origin.
>
> "Fast Radio Bursts, or FRBs, are powerful bursts of radio waves that are
> among the brightest objects ever observed, despite being only milliseconds
> long, after having traveled through millions of light years of space.
> "FRBs were first discovered in 2007 by a research team led by WVU physics
> professor and Green Bank Observatory staffer Duncan Lorimer that included
> his wife and fellow WVU professor, Maura McLaughlin, and David Narkevic,
> then a WVU senior. The discovery was made while poring over archived data
> from observations recorded years earlier at the Parkes radio telescope in
> Australia."
>
> https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.wvgazettemail.com%2Fnews%2Fnew-telescope-in-works-at-green-bank-to-detect-map-fast-radio-bursts%2Farticle_0922d95a-1cc1-5a23-800d-41fca9e3fe92.html%23utm_source%3Dwvgazettemail.com%26utm_campaign%3D%252Fnewsletters%252Fwvamupdate%252F%253F-dc%253D1606041014%26utm_medium%3Demail%26utm_content%3Dread%2520more&data=04%7C01%7C%7Cfbae684c9ad646b40d7408d88ff72934%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637417639002189491%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=3STvGC9KhsP1fW%2BaI7T3KV5LwgKALM7dw%2F0fOnEcNTs%3D&reserved=0
>
> On Mon, Nov 23, 2020 at 4:18 PM Howard Brazee <howard at brazee.net> wrote:
>
>>
>>> On Nov 23, 2020, at 8:29 AM, Markus Baur via Lois-Bujold <
>> lois-bujold at lists.herald.co.uk> wrote:
>>> let us take the arecibo design as plubeprint and look where we can
>> reduce mass
>>
>> I suspect it won’t be a problem finding a similar depression to put it on
>> the moon.
>> --
>> Lois-Bujold mailing list message sent to loisaletafundis at gmail.com
>> Lois-Bujold at lists.herald.co.uk
>> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.herald.co.uk%2Fcgi-bin%2Fmailman%2Flistinfo%2Flois-bujold&data=04%7C01%7C%7Cfbae684c9ad646b40d7408d88ff72934%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637417639002199491%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=NY05KE58VJ0J3b0ltvA6hr7slIgSMPN3zE8L6OPPFk4%3D&reserved=0
>>
>
> --
> Lois Aleta Fundis
> loisaletafundis at gmail.com
>
> "No one you have ever been and no place you have ever gone ever leaves you.
> The new parts of you simply jump in the car and go along for the rest of
> the ride." -- Bruce Springsteen
> --
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> Lois-Bujold at lists.herald.co.uk
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