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Apod Dec 26 (black hole) - RJN or someone?
Posted: Mon Dec 27, 2004 8:08 am
by makc
Though
this APOD is awesome piece of digital art, it is very far from how black hole would
really look like.
I've seen so-called "blak hole pictures" on APOD site before, and I don't understand why so misleading and non-even-close images are published on astronomy sites over and over, and specially APOD. Perheps, in the digital art scene there is too little astronomy knowledge, but professional astronomist site ?...
Um..
Posted: Mon Dec 27, 2004 11:10 pm
by Wondering
Can you provide a link to an English language site for what a black hole SHOULD look like?
Posted: Tue Dec 28, 2004 7:45 am
by makc
The
image from my above post is now wide-spread over the net, and is actually loosely cropped version of
this image (see below) by J.P.Luminet; on
one of his site pages you can find
older, original computer-simulated image.
(image removed - it's in post quote below)
P.S.: I suggest you to contact the author for his best image and publish it on APOD.
Posted: Tue Dec 28, 2004 6:25 pm
by crosscountry
that's awsome thanks for the links.
Posted: Thu Dec 30, 2004 8:42 pm
by RJN
Posted: Sun Jan 02, 2005 4:01 pm
by makc (it's me, really)
FYI: you have a broken link there
http://www.astro.rug.nl/~psackett/NVWS/index.html (404)
also,
on that APOD you wrote:In fact, near the black hole, you can see the whole sky - light from every direction is bent around and comes back to you.
but you image does not show that... well, image above does not project stars correctly, on the other side, but it shows light halo around it (see your own quote).
Tried to PM this, didn't worked out, message stuck in outbox
Posted: Wed Jan 05, 2005 6:33 pm
by makc
I'm trying to derive light path equation from (A1) at
http://antwrp.gsfc.nasa.gov/htmltest/gi ... endix.html
From what I have
it follows that there is circular orbit at any radius, which is wrong. Where is my mistake?
Thanx.