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| Yousuf Khan... |
 Posted: Fri Oct 30, 2009 11:33 pm |
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"The Kepler space telescope was launched in March and the hope is that
in the small patch of sky (containing 100,000 stars) it is focussing in
on, Earth-sized exoplanets orbiting within the "habitable zones" of
their parent stars will be discovered. However, there's a problem:
Kepler has noisy amplifiers."
Space Disco : Discovery Space: Kepler's Exoplanet Hunt On Hold Until 2011
http://blogs.discovery.com/space_disco/2009/10/keplers-exoplanet-hunt-on-hold-until-2011.html |
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| dlzc... |
| Posted: Sat Oct 31, 2009 8:14 am |
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Dear Yousuf Khan:
On Oct 30, 10:33 pm, Yousuf Khan <bbb... at (no spam) spammenot.yahoo.com> wrote:
[quote]"The Kepler space telescope was launched in March
and the hope is that in the small patch of sky
(containing 100,000 stars) it is focussing in on, Earth-
sized exoplanets orbiting within the "habitable zones" of
their parent stars will be discovered. However, there's a
problem: Kepler has noisy amplifiers."
[/quote]
I had a problem once, where I controlled the pitch of fan blades used
in a big scrubber system based on a 4-20mA signal. The controller
would not accept 4-20 mA directly, so I home rolled a converter (back
when there was no internet per se, and the electronics guys did not
know about hydraulics to bring them catalogs). You could key a walkie
talkie in the close vicinity of the converter, and watch the fan cause
a 30 foot high concrete wall to suck in and blow out... A military
grade op-amp swapout fixed it.
David A. Smith |
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| Steve Willner... |
| Posted: Mon Nov 02, 2009 8:02 am |
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In article <4aebcc28$1 at (no spam) news.bnb-lp.com>,
Yousuf Khan <bbbl67 at (no spam) spammenot.yahoo.com> writes:
[quote]Space Disco : Discovery Space: Kepler's Exoplanet Hunt On Hold Until 2011
http://blogs.discovery.com/space_disco/2009/10/keplers-exoplanet-hunt-on-hold-until-2011.html
[/quote]
There is apparently an update amounting to "never mind." Given the
obvious inaccuracies in the blog, I'd be very skeptical anyway.
--
Help keep our newsgroup healthy; please don't feed the trolls.
Steve Willner Phone 617-495-7123 swillner at (no spam) cfa.harvard.edu
Cambridge, MA 02138 USA |
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| YKhan... |
| Posted: Wed Nov 04, 2009 12:59 pm |
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On Nov 2, 1:02 pm, will... at (no spam) cfa.harvard.edu (Steve Willner) wrote:
[quote]There is apparently an update amounting to "never mind." Given the
obvious inaccuracies in the blog, I'd be very skeptical anyway.
[/quote]
I don't know, the "never-mind" didn't seem all that convincing. They
just said that they will attempt to work around the sensors with the
overamplified amplifiers.
Yousuf Khan |
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