hubble space telescope.pptx

8/22/2019 Hubble Space Telescope.pptx

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Twinkle twinkle little starHow I wonder what you are??

Up above the world so high

Like a diamond in the sky


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What fascinated the human race?

sun moon


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stars falling objects


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What was invented to feed the hunger of

fascination??

something which starts with word teleyeah telescope..!!


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Time flew on wings.


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Then came the mega telescope..

Hubble space telescope


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Proposal for space

telescope


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Ground based telescopes were effected by climaticchanges.

Turbulence in earths atmosphere was also a hindrance

for quality space observation

Astronomers wanted to take the space observation to a

next level

All this lead to the proposal for a space telescope.in

1970 NASA took LST as a major goal


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Funding..


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The US Congress questioned many aspects of the proposedbudget. Many astronomers met congrsssmen and senators inperson.

Funding issues led NASA to collaborate with European Space

Agency.ESA provided first generation instruments and solarcells in return for European astronomers being guaranteed atleast 15% of the observing time on the telescope.

Congress eventually approved funding of US $36,000,000

And finally the construction of large space

telescope started...


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NASA assigned the

task


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NASA

MarshallSpaceFlightCenter

Goddard

SpaceFlightCenter

Lockheed

Perkin-Elmer


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Marshall Space Flight Center(MSFC) was given

responsibility for the design, development, andconstruction of the telescope

companyPerkin-Elmerto design and build the Optical

Telescope Assembly (OTA) and Fine Guidance Sensors forthe space telescope

Lockheedwas commissioned to construct and integrate

the spacecraft in which the telescope would be housed

Goddard Space Flight Centerwas given overall control ofthe scientific instruments and ground-control center for the

mission


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Design andconstruction


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Design of Hubble space telescope byMarshall Space FlightCenter(MSFC


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Polishing of Hubble's primary mirror at Perkin-Elmercorporation, Danbury, Connecticut, March 1979


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Work under progress!!!!!


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Launching..


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By early 1986, the planned launch date of October that yearlooked feasible, but the Challenger accident brought the U.S.space program to a halt

The telescope had to be kept in a clean room, powered up and

purged with nitrogen, until a launch could be rescheduled.This costly situation (about $6 million per month) pushed theoverall costs of the project even higher.

STS-31 was the thirty-fifth mission of the American Space

Shuttle program which launched the Hubble Space Telescopeastronomical observatory into Earth orbit. The mission usedthe Space Shuttle Discoverywhich lifted off from Launch Pad39B on 24 April 1990 from Kennedy Space Center, Florida.


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Space shuttle

discovery which

carried the Hubble

Space Telescope


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Space ShuttleDiscovery

Launched onapril 1990carrying thehubble space

telescope


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Space Shuttle Discovery releasing Hubble Telescope in itsorbit..


25/50Hubble in its orbit around orbitin around the earth


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Control and

command


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Hubble Control Center, Goddard Space Flight Centre, 1999


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Hubble introuble


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Within weeks of the launch of the telescope, the returnedimages showed there was a serious problem with theoptical system

Hubble failed to achieve a final sharp focus and the best

image quality obtained was drastically lower than expected.

Analysis of the flawed images showed that the cause of theproblem was that the primary mirror had been ground to

the wrong shape

The optics company Perkin-Elme was criticized andblamed for the carelessness


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Hubble was in need of

spectales!!!


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Spectacle of hubble.the correctly ground backup mirror

built by Eastman Kodak for the Hubble space telescope.


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The Space Shuttle Endeavourmission STS-61 took place in December 1993,

and involved installation of several instruments and other equipment overa total of 10 da s.


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before after

problem was solved.


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Important discoveries

by Hubble space

telescope..


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The Hubble has helped to resolve some long-standing problems in

astronomylike-distance of stars, actual value of Hubble constant

Observation of the collision ofComet Shoemaker-Levy9 with Jupiter in 1994 gave the idea about comet-planet collisions

While Hubble helped to refine estimates of the age of theuniverse, it also cast doubt on theories about its future

Clear idea about nebula ,nearest galaxies,extrasolar planets,

constellations

Contributed in the field of black wholes,dark energy,dark matter


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Repairing and

servicing

missions.


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Hubble fell many times ill and everytime it was given

treatment and cured.

Service mission 1 (December 1993)

Service mission 2( February 1997)

Service mission 3A ( December 1999)

Service mission 3B (March 2002)

Service mission 4(May 2009)


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Astronauts putting spectales on hubble during SM1


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Astronaut doing maintenance during SM2


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Astronauts replacing gyroscopes during SM3A


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Astronauts during SM3B


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Astronauts working on Hubble during SM4


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Hubbles Retirementor death ????


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Maintaining Hubble forever and ever in sapce reqires servicingmissions

repairing of complicated instruments and sensors in space is atricky job

So,Hubble cant last long in its orbit

Hubble can be de-orbitted safely using space shuttle but it istricky and very risky mission,so NASA is hesitating for safe de-orbiting missions.

Finally NASA has decided that Hubble wont retire but it will diebecause its difficult to maintain it in space and it is also difficultto bring it back.


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Successor of

Hubble.


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View ofJames Webb Space Telescope.it will take the

place of hubble


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Though Hubble will dieone day.but it willalways remain in the

hearts of the people


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hubble space telescope.pptx

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