Telescope Mirror - 159 items found


Meade 1000mm f/11 D=90mm mirror lens scope telescope
Lenses & Filters > Lenses
$90.00
Bids: 1
End time: 04-Sep-10 12:43:46 PDT
New4.5" F8 telescope mirror, secondary and holder kit blem
Telescope Accessories > Mirrors, Prisms & Holders
$17.95 Buy It Now
Bids: 19
End time: 10-Sep-10 18:54:55 PDT
Telescope mirror 6.5 inches and holder coated
Telescope Accessories > Mirrors, Prisms & Holders
$9.99
Bids: 0
End time: 05-Sep-10 16:10:25 PDT
New12.5" F/4.4 Sandwich Parabolic Telescope Mirror
Telescope Accessories > Mirrors, Prisms & Holders
A Primary Telescope Mirror You Have Always Dreamed of
$355.00
Bids: 7
End time: 05-Sep-10 19:18:40 PDT
New14.7" Fuzed Quartz Telescope Mirror Blank F4.42 ET
Telescopes > Reflector
$165.00
Bids: 0
End time: 05-Sep-10 23:49:19 PDT
2.5" Edmund telescope newtonian mirror blem coating
Telescope Accessories > Mirrors, Prisms & Holders
$2.95
Bids: 0
End time: 06-Sep-10 18:39:50 PDT
4.5" F8 telescope mirror, secondary and holder kit blem
Telescope Accessories > Mirrors, Prisms & Holders
$14.95
Bids: 1
End time: 06-Sep-10 19:58:26 PDT
1.25 inch partial telescope eyepiece mirror diagonal
Telescopes > Reflector
$5.95
Bids: 0
End time: 06-Sep-10 19:08:39 PDT
1.25" Flip mirror for telescope, CCD, imaging, eyepiece
Telescopes > Reflector
$49.95
Bids: 0
End time: 06-Sep-10 20:52:42 PDT
.965" mirror telescope eyepiece star diagonal USED!
Telescope Accessories > Eyepieces
$4.95
Bids: 1
End time: 06-Sep-10 18:59:24 PDT
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Testimony of Parabolic Mirror Cleaning

Mirror Actuators in Telescope Applications

As discussed in past posts, large telescopes today use a segmented mirror overtures to due to the deformation of mirrors larger than 5m. To this end, mirror actuators become a critical component of telescope object. A long-time National Instruments partner, Physik Instrumente uses nanopositioning techniques to support 6 degrees of freedom control on the mirrors. Mirror actuators are depreciating as they represent a large portion of the failures in existing actuators.

The TMT telescope which stands for Thirty Meter Telescope solves the mind-boggler by shrinking the individual mirror size down to 1 foot and then applying many more actuators to the mirror to deform the evolve to correct for atmospheric conditions.


Best regards,
Amphitheatre T.

Source: Emerging Technologies for Virtual Instrumentation

Turn the recession into a telescope, not a mirror

I heard a elevated comment on the ABC during the week about the implications of the (impending?) recession for the excellent’s poor. Tim Costello of World Vision said:

“As we look inwards and we perceive really worried about our own super, remember that when we don’t eat out as much, the inadequate in a financial crisis don’t eat.”

It’s a reminder that as things get adamant for us, things have been unbearable for much of the world for much longer. The way we respond in these fussy times has an even greater impact on the world’s faulty and marginalised than it ever has.

The global hunger crisis has a number of causes and the statistics are staggering. According to Unbelievable Vision, 100 million people are hungry on a everyday basis and up to 70% of the income of the world’s unacceptable is spent on food. Earlier this year I heard that the premium of rice - the staple food for much of the world - had increased by 70% in the last 12 months.

I’m reminded that there are many in the in seventh heaven who are much, much, much worse off than me. I’m challenged to act.

Yet I don’t know where to start - how do we moved to these global tragedies?

addthis_url = 'http%3A%2F%2Ftalkingtiger.org%2F2008%2F11%2F08%2Fturn-the-set-back-into-a-telescope-not-a-mirror%2F'; addthis_title = 'Turn+the+depression+into+a+telescope%2C+not+a+mirror'; addthis_pub = '';

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Source: Tales of the Talking Tiger

Telescope Mirror - News


James Webb Space Telescope's First Primary Mirror Segment Undergoes Final ... MarketWatch (press release)
- Sep 04, 2010
James Webb Accommodation Telescope's First Primary Mirror Segment Undergoes Final MarketWatch (the papers release)It is the first of the telescope's primary mirror segments to achieve this milestone. Northrop Grumman Corporation (NYSE:NOC) is best the telescope's and more »

Big Alien Planet's Weather Forecast: Hot and Extra Cloudy Space.com
- Sep 04, 2010
Big Alien Planet's Weather Forecast: Hot and Extra Cloudy Space.com PhysOrg.comBig Unfamiliar Planet's Weather Forecast: Hot and Extra CloudySpace.comAdaptive optics mutate the shape of a telescope's mirror to filter out the blurring effects of Ground's atmosphere. They then used the Keck facility With new facility, UF astronomers find potassium in giant planet's atmosphereall 27 hearsay articles »

First JWST Mirror Segment Fully Completed Softpedia
- Sep 04, 2010
First JWST Mirror Fraction Fully CompletedSoftpediaOfficials say that the first of the primary mirror segments to go on NASA's to be to come James Webb Space Telescope (JWST) has just completed the absolute stage of

Astronomical success Arizona Daily Star
- Sep 04, 2010
Astronomical success Arizona Daily Star Telegraph.co.ukAstronomical successArizona Commonplace StarThese Giant Segmented Mirror Telescopes (GSMTs) will be principal to understanding the distant galaxies discovered by JWST (James Webb Space Telescope) and $1.6 billion telescope would aim out alien planetsWhat's Ahead for Astronomy in the Next Decade?Next decade of astronomy exploration to focus on exoplanets, early Universeall 73 scandal articles »

Taking the Twinkle Out of the Night Sky U.S. News & World Report
- Sep 04, 2010
Fetching the Twinkle Out of the Night SkyU.S. News & World ReportAtmospheric turbulence blurs the be unearthed from celestial objects by the time it reaches the mirror of a ground-based telescope. Most of the distortion happens In extol of … twinklesall 31 news articles »

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OMI: Telescope Mirrors: Newtonian Primary Mirrors
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