jhetley: (Default)
[personal profile] jhetley
For a short period this afternoon, in a limited area, evidence was spotted supporting the hypothesis that the sun actually exists. This offer available for a limited time only, void where prohibited.

Date: 2005-05-24 04:13 pm (UTC)
From: [identity profile] copperwise.livejournal.com
Scared! Big ball of fire in sky! World ending!

Date: 2005-05-24 04:26 pm (UTC)
From: [identity profile] wcg.livejournal.com
I made a confirming radio telescope observation. The Sun is still the brightest radio source in the sky, even when rain is falling.

Date: 2005-05-24 07:04 pm (UTC)
From: [identity profile] jhetley.livejournal.com
I had thought -- technology of vacuum tube age, back when I still understood electrons -- that radio-astronomers avoided aiming at or really near the sun.

Date: 2005-05-24 07:17 pm (UTC)
From: [identity profile] wcg.livejournal.com
A great many precautions must be taken. First, a wire mesh dish is preferred. Second, the filters placed into the signal processing train are rather more reflective than what would be used for any other celestial target.

That said, there's actually an awful lot of solar radio astronomy done. The sun is very interesting at radio wavelengths.

Date: 2005-05-25 05:03 am (UTC)
From: [identity profile] jhetley.livejournal.com
My information would be circa 1968, at a large-ish dish run by the University of Michigan north of Ann Arbor. Don't know if it still exists.

bleah

Date: 2005-05-25 04:32 am (UTC)
From: [identity profile] wen-spencer.livejournal.com
It's a non-show here. Rain, rain, rain. Worse, werewolves have been messing with my head.

Re: bleah

Date: 2005-05-25 05:01 am (UTC)
From: [identity profile] jhetley.livejournal.com
"...werewolves have been messing with my head."

In my case, it's been selkies and spirit bears and a 14-year-old witch with a 9mm auto....

Re: bleah

Date: 2005-05-25 08:17 am (UTC)
From: [identity profile] wen-spencer.livejournal.com
Oh cool!!! Sounds like a fun read!

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