Skip to main content

VERY LARGE TELESCOPE



THE  WORLD'S   LARGEST   Telescope   system  ,  the  very  large   telescope  (VLT),  is  located  at  Cerro   Paranal in  the  Atacama  desert ,Chile.It  is    used  to  study   visible  light   and  to  collect  and  analyses  the    infrared   heat   energy   and  ultraviolet   radiation.During  a  one  hour  exposure ,  each  telescope  can   photograph ,  objects  that  are  four  billion    times  fainter  than  can  be  seen   with   the  naked   eye.  The   VLT  consist    of  four  telescope    units,  each  with  a  mirror  of   8.2  m(27 ft) in  diameter . These  units   can   be  used    individually   or  in  parallel,together   they    stimulate   one  large  telescope    with  a  mirror  of  16  m (52ft) in  diameter.Working  in  parallel  ,  a  process    known  as    interferometry,the  VLT   allows  celestial    objects    to  be   seen    in  much  finer   detail    than  with  the   Hubble  space  telescope .
On  23  May ,1998,one  of  the   telescope    units  took  its first   photograph   of  a  celestial   object ,  an   event  that   astronomers  call  ".  first  light ".The   VLT  will    be  used   principally   to  search  for  small , Earth  like  planets  around  other   stars.
TELESCOPE  SITE.
THE  VLT  IS LOCATED  AT THE  Summit  of  the  Cero  Paranal , a  mountain  in  the  Atacama  desert   Chile    at   2,632 m(8,655ft) above  sea level.The  site  is one  of the driest   place  on  Earth,despite being situated   only  12   km (7.5  mile)from  the  pacific  coast.The  mountain  top   site  provide   remarkable  conditions    for   observation  and  photography.There  are  up  to  350   cloud-free  nights  per  year ,  and images  are  stable  owing  to  the  lack  of   water  vapor  in  the  atmosphere.
VERY LARGE TELESCOPE






Comments

Post a Comment

Popular posts from this blog

REVOLUTIONS-INDUSTRIAL AND INFORMATION

INDUSTRIAL   REVOLUTION  Starts   in   Europe  particularly  in  England  in  eighteen  century.It   changed  the  whole   of Europe   and   England 's  economy.During  this  period    New    machines  are  invented  in   England   to  speed  up  the    spinning  of  wool  and  cotton .At  first  they  were  powered  by  water  wheels  but  later steam  engines   are  developed.Iron   become  cheaper  and  stronger  as  Iron  making  techniques   improved.Canals  are  dug  to  carry   coal   from  the  mines and  to  transport  finished  goods.After   some times  Railways    replaced  canals  .The  first  railways   opens  in   1825.Big  changes   took  place   in  Agriculture  .Machines  replaced    human  power,thus  now  fewer  people   are  to  grow  food.This  forced  people   to  leave  the  country side   to  find  work  in  mills  and  factories.Industrial   town   grow   rapidly.   MASS  PRODUCTION -  The  most  unique   thing   of  Industrialization    was   mass  produ
Post a Comment
Read more

WEB SITES TO ENTERTAIN YOU

If  you   get  bored   from  the   web  viewing  the  same  stuff    over  and  over  again -social media  ,blogs,   news  etc  then  you  certainly   need  some  thing  different  that  can  soothe   your  soul and  give  you some  kind of entertainment  then  here  are some  sites  that  can  solve  your  purpose. Bored Panda   Bored Panda is the place you want to be when you want to discover interesting and visually appealing content. It's a blog that publishes regular updates on the coolest finds in travel, photography, illustration, animals, DIY, technology, design and all sorts of other great categories. You can also create an account to vote posts up or down. Brain Pickings .      Try expanding your knowledge by diving deep into the incredibly useful and thought-provoking blog posts on Brain Pickings, which is a popular blog run by MIT fellow Maria Popova. She's the one who does all the research and writing for each
Post a Comment
Read more

BEST INTERESTING SITES

 Human achievement, human folly, inspirational stories of compassion and courage, and horrific stories of terrible crimes are all represented here. These  sites   are  inspiring  sometimes  shocking   but  they  are   very interesting  to  view  . Some  of  such  websites  are  - Here  , SFW  means  "safe for  work" with all  clean  content .NSFW  means  "not  safe  for  work.Its  content  may  not  be  safe  for  work. Distractify (SFW) Distractify.com is about human emotion. These viral stories are hand-picked by the editors because they impact the human condition in some way. The photography is often impressive. You can find life hacks on how to raise your children in a safer way, tips on how to improve your relationship with your dog, and topics beyond. Compelling and addictive content fills the pages of Distractify.     Listverse (SFW) .  Listverse is a collection of thousands of gems of human knowledge, presented in li
Post a Comment
Read more