Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

Speciality Forums >> Science! Astronomy & Space Exploration, and Others

Pages: 1
BrendanF
super member


Reged: 12/04/07

Loc: Los Angeles, CA
First Two Webb Telescope Flight Mirrors Delivered new
      #5569920 - 12/13/12 08:38 PM

First Two Webb Telescope Flight Mirrors Delivered to NASA

I can't imagine what the shipping costs were!


Post Extras: Print Post   Remind Me!   Notify Moderator  
Jarad
Postmaster
*****

Reged: 04/28/03

Loc: Atlanta, GA
Re: First Two Webb Telescope Flight Mirrors Delivered new [Re: BrendanF]
      #5569934 - 12/13/12 08:47 PM

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



Jarad


Post Extras: Print Post   Remind Me!   Notify Moderator  
Mary B
Vendor - Echo Astronomy and Electronics
*****

Reged: 05/21/10

Loc: Minnesota
Re: First Two Webb Telescope Flight Mirrors Delivered [Re: Jarad]
      #5569942 - 12/13/12 08:55 PM

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

Post Extras: Print Post   Remind Me!   Notify Moderator  
llanitedave
Humble Megalomaniac
*****

Reged: 09/26/05

Loc: Amargosa Valley, NV, USA
Re: First Two Webb Telescope Flight Mirrors Delivered new [Re: Mary B]
      #5570097 - 12/13/12 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.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CounterWeight
Postmaster
*****

Reged: 10/05/08

Loc: Palo alto, CA.
Re: First Two Webb Telescope Flight Mirrors Delivered new [Re: Mary B]
      #5570101 - 12/13/12 10:50 PM

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

Post Extras: Print Post   Remind Me!   Notify Moderator  
CounterWeight
Postmaster
*****

Reged: 10/05/08

Loc: Palo alto, CA.
Re: First Two Webb Telescope Flight Mirrors Delivered new [Re: CounterWeight]
      #5570104 - 12/13/12 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

.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Qwickdraw
Pooh-Bah
*****

Reged: 03/03/12

Loc: Ann Arbor, MI
Re: First Two Webb Telescope Flight Mirrors Delivered new [Re: CounterWeight]
      #5570349 - 12/14/12 06:07 AM

I saw a speck of dust !

Post Extras: Print Post   Remind Me!   Notify Moderator  
Qwickdraw
Pooh-Bah
*****

Reged: 03/03/12

Loc: Ann Arbor, MI
Re: First Two Webb Telescope Flight Mirrors Delivered new [Re: Qwickdraw]
      #5570352 - 12/14/12 06:15 AM

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

Post Extras: Print Post   Remind Me!   Notify Moderator  
Qwickdraw
Pooh-Bah
*****

Reged: 03/03/12

Loc: Ann Arbor, MI
Re: First Two Webb Telescope Flight Mirrors Delivered new [Re: Qwickdraw]
      #5570358 - 12/14/12 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


Post Extras: Print Post   Remind Me!   Notify Moderator  
freestar8n
Post Laureate
*****

Reged: 10/12/07

Re: First Two Webb Telescope Flight Mirrors Delivered new [Re: Qwickdraw]
      #5570366 - 12/14/12 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


Post Extras: Print Post   Remind Me!   Notify Moderator  
EJN
Carpal Tunnel
*****

Reged: 11/01/05

Loc: 53 miles west of Venus
Re: First Two Webb Telescope Flight Mirrors Delivered new [Re: Qwickdraw]
      #5570924 - 12/14/12 02:24 PM

Quote:

I saw a speck of dust !



First step is to clean them with Windex.


Post Extras: Print Post   Remind Me!   Notify Moderator  
PhilCo126
Post Laureate


Reged: 01/14/05

Loc: coastline of Belgium
Re: First Two Webb Telescope Flight Mirrors Delivered new [Re: EJN]
      #5572027 - 12/15/12 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...

Post Extras: Print Post   Remind Me!   Notify Moderator  
Qwickdraw
Pooh-Bah
*****

Reged: 03/03/12

Loc: Ann Arbor, MI
Re: First Two Webb Telescope Flight Mirrors Delivered new [Re: PhilCo126]
      #5575238 - 12/17/12 06:38 AM

Quote:

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


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1


Extra information
1 registered and 1 anonymous users are browsing this forum.

Moderator:  LivingNDixie, FirstSight, JayinUT 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 586

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics