Mirror Big

Mirror Big
Mirror Big

why large telescope mirrors are made from many mirrors sepirate?

can not build a plane mirror? why they should build great little mirrors mirror? Why "A large concave mirror is difficult to produce"

The first two answers not too bad, but they are not really good either. The answer is that the compound mirrors, composed of many segments, solving a series of engineering problems. First up, consisting of mirrors can be made to deform (in thousandths of an inch) that can be used to compensate for atmospheric turbulence. Secondly, sections of composite mirror need not complete the tensions a giant mirror, so you can make much thinner and lighter, without losing its curvature calculated very fine (in wavelengths of light). Third, lightweight mirrors, turn to resolve some important issues closely related to the management of a large telescope that is, you need a mirror that can be mounted on a heavy structure without causing one end to give a lot of the other end, making the alignment mirror (high school) to go fly Large Telescope images of clarity. For example, a bridge and skyscrapers are actually designed to bend a little, while the lens of a telescope is rigidity. It is harder to do with thousands of tons of glass at one end and very little on the other, and a telescope, the light is easier to move the telescope to different parts of the sky with great precision. This is a tricky business, because the telescope pointing to different parts of the sky and the arm "leverage" or leverage can cause different stress levels greatly depending on location where the telescope is pointed. Fourth, the lighter, thinner mirrors have less total mass (by definition) of a giant mirror solid which affects their thermal management. When a telescope mirror has a temperature that is different from air boundary layer is formed which affect the performance (negative). When a mirror is big and solid, its temperature can be easily adjusted to match the outdoor temperature at which it is exposed in the night sky (like a swimming pool in northern climates may take several weeks to warm the temperature can be used in summer). Thermal management is one of the least appreciated problem in using the telescope, even fans face these problems with their scopes of 4 to 30 inches (10 to 70 cm). It is easier to change the temperature of a thin mirror telescope in the same way is easier to change the temperature a bath instead of a pool. Fifth, the preferred place of observatories is very high, very remote sites, as in Chile, if you look at pictures of trucks used to make the 200-inch Hale telescope at Palomar, and believes that mirrors modern dwarf, we can make a idea of the difficulties in moving a single mirror on a large mountain range. The main reason not to build a large mirror is the difficulty to ensure that all segments of the line to the right. But with new compounds and metals can get the kind of rigidity that can do it, and teams can make adjustments super-fine that were not possible when a mirror was a giant piece of glass. Consideration minor, is that a segmented mirror also has the advantage that if a segment is damaged can be replaced. In Texas, a disgruntled employee emptied his revolver in the primary mirror of the 107 "telescope at McDonald Observatory, which is not destroyed (who painted the black hole and maintained their use) but say if it were a segmented mirror of at least one new segment would have been an option. Hope that helps, GN

MCR Honey, This Mirror Isn't Big Enough For The Two Of Us

admin posted at 2010-1-8 Category: Mirrors

649 Responses Leave a comment

  1. #601custom writing paper @ 2017-10-6 12:46

    Wow, amazing weblog structure! How lengthy have you ever been running a blog for?

    you made running a blog look easy. The total look of your web site is fantastic, as smartly as the content!

  2. #602www.kiir.or.kr @ 2017-10-6 15:21

    These are genuinely impressive ideas in regarding blogging.
    You have touched some fastidious factors here. Any way keep up
    wrinting.

  3. #603SEO @ 2017-10-6 17:32

    Hello everyone, it’s my first pay a visit at this site,
    and piece of writing is genuinely fruitful in favor of
    me, keep up posting these types of posts.

  4. #604teen fiction book for girls @ 2017-10-6 20:29

    Hello There. I found your blog using msn. This is a
    really well written article. I’ll be sure to bookmark it and come back to read
    more of your useful information. Thanks for the post. I will definitely comeback.

  5. #605top interior design firms manhattan @ 2017-10-6 20:52

    Thanks for every other fantastic post. The place else may just anybody get that type
    of information in such a perfect approach of writing? I’ve
    a presentation subsequent week, and I am at the look for such information.

  6. #606this content @ 2017-10-6 21:20

    Hmm is anyone else encountering problems with the images on this blog loading?
    I’m trying to figure out if its a problem on my end or if it’s the
    blog. Any feedback would be greatly appreciated.

  7. #607try this out @ 2017-10-7 14:11

    WOW just what I was looking for. Came here by searching for iontophoresis machine

  8. #608click to investigate @ 2017-10-7 17:55

    I don’t even know how I ended up here, but I thought this
    post was great. I do not know who you are but definitely you’re going to a famous blogger if you
    aren’t already ;) Cheers!

  9. #609mayze.kroogi.com @ 2017-10-9 01:35

    I used to be able to find good information from your blog posts.

  10. #610Panel Surya @ 2017-10-9 04:48

    Heya just wanted to give you a brief heads up aand let
    you know a few of the pikctures aren’t loading correctly. I’m noot sure why but I thinkk its a linking issue.
    I’ve trdied it in two different internet browsers and both shgow the same results.

  11. #611Karla @ 2017-10-11 04:33

    Genuinely no matter if someone doesn’t be aware of after that its up to other people that they will
    assist, so here it takes place.

  12. #612dog health care tips @ 2017-10-11 21:58

    Hello everyone, it’s my first go to see at this web site, and paragraph
    is actually fruitful for me, keep up posting these articles or reviews.

  13. #613Thehappypooch @ 2017-10-12 09:29

    Simply wish to say your article is as astonishing.
    The clearness on your publish is simply nice and that
    i could think you are a professional in this subject.
    Well along with your permission let me to take hold of
    your RSS feed to stay updated with approaching post.
    Thank you one million and please continue the rewarding work.

  14. #614oltreilnucleare.it @ 2017-10-12 12:02

    Ahaa, its fastidious dialogue about this piece of writing here
    at this web site, I have read all that, so at this
    time me also commenting at this place.

  15. #615dog grooming meaning @ 2017-10-12 13:07

    An outstanding share! I have just forwarded this onto
    a coworker who had been conducting a little homework on this.
    And he in fact ordered me breakfast due to the fact that I stumbled upon it for him…
    lol. So allow me to reword this…. Thanks for the meal!!
    But yeah, thanks for spending some time to talk about this topic here on your web site.

  16. #616car wash @ 2017-10-13 09:35

    Thanks for finally writing about >Mirror Big | Mediterranean Design & Mirrors <Liked it!

  17. #617Vada @ 2017-10-13 09:51

    Way cool! Some very valid points! I appreciate you penning this write-up and the rest of the
    website is very good.

  18. #618resume writing service online @ 2017-10-13 10:16

    Excellent article. Keep posting such kind of info on your site.
    Im really impressed by your blog.
    Hello there, You’ve performed an excellent job. I’ll definitely digg it and individually recommend to my friends.
    I am sure they will be benefited from this site.

  19. #619la-verita.com.ua @ 2017-10-14 02:55

    I couldn’t resist commenting. Very well written!

  20. #620best plasma lighter @ 2017-10-14 07:27

    I was curious if you ever thought of changing the page layout of your blog?

    Its very well written; I love what youve got to say. But maybe you could a
    little more in the way of content so people could connect with it better.

    Youve got an awful lot of text for only having 1 or 2 images.
    Maybe you could space it out better?

  21. #621flamelez @ 2017-10-15 14:34

    Thanks for finally writing about >Mirror Big | Mediterranean Design & Mirrors <Liked it!

  22. #622Kathaleen @ 2017-10-16 13:23

    At this moment I am going away to do my breakfast,
    after having my breakfast coming yet again to read more news.

  23. #623pipoca de leite ninho @ 2017-10-20 05:01

    I’ve been browsing online more than three hours today, yet I never found any interesting
    article like yours. It is pretty worth enough for me.

    In my opinion, if all website owners and bloggers made good content as you did, the internet will be a lot
    more useful than ever before.

  24. #624this page @ 2017-10-20 22:42

    Hello, yup this article is genuinely fastidious and I have learned
    lot of things from it concerning blogging. thanks.

  25. #625knob and tube electrical @ 2017-10-21 22:47

    Currently it appears like Drupal is the preferred blogging platform available right now.
    (from what I’ve read) Is that what you are using on your blog?

  26. #626pushmatic breaker panel @ 2017-10-22 03:51

    Wonderful site. A lot of useful info here. I am
    sending it to some friends ans additionally
    sharing in delicious. And of course, thanks for your sweat!

  27. #627Joma Jewellery @ 2017-10-25 01:39

    Great hub! Cuttings, correspondence and notes on file.
    Sell it on eBay? One of the simplest ways to go about this is to get your ring customized
    made.

  28. #628Check It out @ 2017-10-25 11:52

    I am actually grateful to the holder of this website who
    has shared this impressive piece of writing at at this time.

  29. #629gameshill.net @ 2017-10-26 01:46

    What’s up, for all time i used to check webpage posts here
    in the early hours in the daylight, as i enjoy to learn more and more.

  30. #630Maria @ 2017-10-26 02:18

    In fact when someone doesn’t understand after that
    its up to other people that they will help, so here it takes place.

  31. #631buy Android installs @ 2017-10-26 03:38

    I’ve learn some just right stuff here. Definitely value bookmarking for revisiting.
    I surprise how much attempt you place to create this sort of wonderful informative website.

  32. #632Portable Restrooms Trailers @ 2017-10-27 00:29

    It’s wonderful that you are getting thoughts from this piece of writing as well
    as from our argument made at this place.

  33. #633tile and grout cleaning machines @ 2017-10-27 00:31

    Hi it’s me, I am also visiting this web site daily, this web page is in fact fastidious and
    the viewers are really sharing nice thoughts.

  34. #634wiring tube @ 2017-10-27 23:18

    Heya i’m for the primary time here. I came across this board and
    I in finding It really useful & it helped me out much.
    I’m hoping to give one thing back and aid others such as you
    aided me.

  35. #635getapk market 1.6.7.apk download @ 2017-11-3 06:08

    Why people still make use of to read news papers when in this technological world all is presented on net?

  36. #636Creehack @ 2017-11-4 04:48

    all the time i used to read smaller articles or reviews which as well clear their motive, and that is
    also happening with this article which I am reading here.

  37. #638Cricbuzz live stream @ 2017-11-10 16:20

    I like reading through a post that will make people think.
    Also, thank you for permitting me to comment!

  38. #639cricbuzz ipl live score 2018 @ 2017-11-10 21:34

    For the reason that the admin of this site is working,
    no question very shortly it will be renowned, due to its feature contents.

  39. #640Bell @ 2017-11-14 13:34

    Hello there! This article could not be written any better!
    Going through this article reminds me of my previous roommate!
    He continually kept talking about this. I am going to send this post to him.

    Fairly certain he’ll have a great read. Thank you for sharing!

  40. Hello, I think your site might be having browser compatibility
    issues. When I look at your website in Safari, it looks fine but when opening in Internet Explorer, it has some overlapping.
    I judt wanted too give you a quick heads up! Other then that,
    awesome blog!

  41. Hello There. I discovered your weblog the use of msn. That is a very neatly wwritten article.
    I’ll be sure to boomark it and return to learn more of yyour helpful info.
    Thanks for the post. I will definitely return.

  42. #643лечение в Болгарии @ 2017-11-14 17:46

    I read this article fully concerning the comparison of
    most recent and preceding technologies, it’s amazing article.

  43. #644отдых в Болгарии @ 2017-11-14 18:18

    I really like reading aan article that will make men and women think.
    Also, many thanks for allowing forr me to comment!

  44. #645360 frontal @ 2017-11-15 13:55

    360 frontal https://www.youtube.com/watch?v=ny8rUpI_98I Great service via internet

  45. Thank you for the auspicious writeup. It in fact was a amusement account it.
    Look advanced to far added agreeable from you! However,
    how can we communicate?

  46. #647Check This Out @ 2017-11-16 11:56

    What’s up, I check your blog on a regular basis.
    Your story-telling style is awesome, keep up the good work!

  47. #648proline.physics.iisc.ernet.in @ 2017-11-17 07:41

    Thank you for another informative site. The place else could I am getting
    that kind of information written in such a perfect manner?

    I’ve a venture that I’m simply now operating on, and I have been at
    the glance out for such information.

  48. #649dui attorney columbia near me @ 2017-11-17 23:09

    Why people still use to read news papers when in this technological world everything is accessible
    on net?

Leave a Reply

(Ctrl + Enter)