Skip to comments.
Astronomy Picture of the Day - Five Hundred Meter Aperture Spherical Telescope
NASA ^
| 09/29/2016
| (see photo credits)
Posted on 09/29/2016 5:41:29 AM PDT by ThomasMore
click here to read article
Navigation: use the links below to view more comments.
first previous 1-20, 21-26 last
To: ETL
Yes, Starship Troopers, Timeline are two that come to mind................
21
posted on
09/29/2016 6:47:10 AM PDT
by
Red Badger
(YES, I'm Deplorable! I Deplore the entire Democrat Party!....................)
To: ETL
Oh, I left out “I, Robot”, which was a complete farce.................
22
posted on
09/29/2016 6:50:58 AM PDT
by
Red Badger
(YES, I'm Deplorable! I Deplore the entire Democrat Party!....................)
To: wastoute
Whatever you do, dont let them point it at the Sun! When I was designing and building satellite tracking antennas, we would use the sun as a good radio source to exercise the tracking. Could not keep in on there long off course as it heated the feed too much.
Much more convenient that waiting for a satellite transmitting the right frequencies to come over. Plus, very easy to get pointed close to the target.
To: wastoute
Whatever you do, dont let them point it at the Sun!I wonder how many passing birds this dish fries when the sun is just right in the sky?
To: ThomasMore
With all that trouble, you'd think they would have made it parabolic -- to minimize spherical aberration.
OTOH. I guess there might be some freqency-spreading advantages of examining what is in the aberration fringe area...
25
posted on
09/29/2016 8:37:38 PM PDT
by
TXnMA
("Allah": Satan's current alias; "Barack": Allah's current ally...)
To: ThomasMore
They should put a BIG cistern under that central hole.
OTOH, with China's air pollution, that might not be such a good idea... '-)
26
posted on
09/29/2016 8:40:54 PM PDT
by
TXnMA
("Allah": Satan's current alias; "Barack": Allah's current ally...)
Navigation: use the links below to view more comments.
first previous 1-20, 21-26 last
Disclaimer:
Opinions posted on Free Republic are those of the individual
posters and do not necessarily represent the opinion of Free Republic or its
management. All materials posted herein are protected by copyright law and the
exemption for fair use of copyrighted works.
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson