Jump to content


Photo

First Two Webb Telescope Flight Mirrors Delivered

  • Please log in to reply
12 replies to this topic

#1 BrendanF

BrendanF

    Vostok 1

  • -----
  • Posts: 162
  • Joined: 04 Dec 2007
  • Loc: Los Angeles, CA

Posted 13 December 2012 - 08:38 PM

First Two Webb Telescope Flight Mirrors Delivered to NASA

I can't imagine what the shipping costs were! :D

#2 Jarad

Jarad

    Fly Me to the Moon

  • *****
  • Posts: 6354
  • Joined: 28 Apr 2003
  • Loc: Atlanta, GA

Posted 13 December 2012 - 08:47 PM

Shipping is free with any purchase over $100,000,000.

;)

Jarad

#3 Mary B

Mary B

    Vendor - Echo Astronomy and Electronics

  • *****
  • Vendors
  • Posts: 3067
  • Joined: 21 May 2010
  • Loc: Minnesota

Posted 13 December 2012 - 08:55 PM

Beryllium? Not stuff I would want to grind, toxic!

#4 llanitedave

llanitedave

    Humble Megalomaniac

  • *****
  • Posts: 22182
  • Joined: 25 Sep 2005
  • Loc: Amargosa Valley, NV, USA

Posted 13 December 2012 - 10:46 PM

And how! I know somebody who got sick merely from working in a building where beryllium had been machined two decades before.

She's permanently disabled, and the building had to be razed.

I hope the price of those mirrors doesn't include costs of this nature.

#5 CounterWeight

CounterWeight

    Cosmos

  • *****
  • Posts: 8101
  • Joined: 05 Oct 2008
  • Loc: Palo alto, CA.

Posted 13 December 2012 - 10:50 PM

~4' mirror and only 88lbs!? That is truely lightweight.

#6 CounterWeight

CounterWeight

    Cosmos

  • *****
  • Posts: 8101
  • Joined: 05 Oct 2008
  • Loc: Palo alto, CA.

Posted 13 December 2012 - 10:52 PM

Hubble's main Mirror
Primary Mirror Diameter: 94.5 in (2.4 m), Primary Mirror Weight: 1,825 lb (828 kg)

source

.

#7 Qwickdraw

Qwickdraw

    Surveyor 1

  • *****
  • Posts: 1717
  • Joined: 03 Mar 2012
  • Loc: Ann Arbor, MI

Posted 14 December 2012 - 06:07 AM

I saw a speck of dust !

#8 Qwickdraw

Qwickdraw

    Surveyor 1

  • *****
  • Posts: 1717
  • Joined: 03 Mar 2012
  • Loc: Ann Arbor, MI

Posted 14 December 2012 - 06:15 AM

The shipping containers look like they are pressurized with most likely nitrogen to ensure a positive atmosphere.

#9 Qwickdraw

Qwickdraw

    Surveyor 1

  • *****
  • Posts: 1717
  • Joined: 03 Mar 2012
  • Loc: Ann Arbor, MI

Posted 14 December 2012 - 06:24 AM

Too funny, The shipping containers have a round dome top and they actually thought they have to stamp on them "do not stack"
Must be the same lawyer who makes companies put the "hot" labels on the clothes irons

#10 freestar8n

freestar8n

    Soyuz

  • *****
  • Posts: 3893
  • Joined: 12 Oct 2007

Posted 14 December 2012 - 06:39 AM

Or a sticker on an interferometric null that says,

"Make sure this null is configured properly for the mirror you're about to test."

I don't mind seeing extra precautions being taken, and I was concerned about the workers possibly holding the flashlights over the mirror surface, which poses a risk right there.

These things are going to have to self-assemble perfectly, and far from Earth, with I presume no chance for even a robotic fix if something goes wrong. I hope it all works.

And I hope the surfaces have the correct shape, and they assemble with each in its correct location in the pattern.

Frank

#11 EJN

EJN

    Vanguard

  • *****
  • Posts: 2131
  • Joined: 01 Nov 2005
  • Loc: 53 miles west of Venus

Posted 14 December 2012 - 02:24 PM

I saw a speck of dust !

First step is to clean them with Windex.

#12 PhilCo126

PhilCo126

    Gemini

  • -----
  • Posts: 3232
  • Joined: 14 Jan 2005
  • Loc: coastline of Belgium

Posted 15 December 2012 - 05:16 AM

In fact these JWST mirror segments are Gold-coated as Gold is highly reflective at the mid-Infrared wavelengths the telescope's instruments will be observing...

#13 Qwickdraw

Qwickdraw

    Surveyor 1

  • *****
  • Posts: 1717
  • Joined: 03 Mar 2012
  • Loc: Ann Arbor, MI

Posted 17 December 2012 - 06:38 AM

In fact these JWST mirror segments are Gold-coated as Gold is highly reflective at the mid-Infrared wavelengths the telescope's instruments will be observing...


I am glad you mentioned that as I failed to noticed the GOLD COLOR :foreheadslap:






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics