Tag: radio telescope and space telescopes

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Questions Related to radio telescope and space telescopes

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

DSN is a deep space network tracking station is 

  1. to track and communicate with interplanetary spacecraft missions.

  2. to track and provide the fuel to the spacecraft.

  3. to maintain the spacecraft

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

DNS is a deep space network tracking station use to track and  communicate with interplanetary spacecraft missions, Along with tacking and communication DSN is also used to explore the furthest point of our solar system.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

Which of the following is an early drawback of HST?

  1. Its ground control system.

  2. Hubble failed to achieve a final sharp focus and the best image quality obtained was drastically lower.

  3. Images of point sources spread out over a radius of more than one arcsecond.

  4. All of the above
Reveal answer Fill a bubble to check yourself
B,C Correct answer
Explanation

As the early drawback of Hubble space telescope, Hubble filed to achieve a final sharp focus and the best image quality obtained was drastically lower. Also the image of point sources spread out over a radius of more than one arc second.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

Which of the following is correct statement regarding HST?

  1. The Hubble Space Telescope (HST) , has accurately determined the rate of expansion of the universe.

  2. Hubble has contributed to studies of the behavior of graphite composite structures in vacuum.

  3. Optical contamination from residual gas can also be observed from the HST.

  4. none of the above
Reveal answer Fill a bubble to check yourself
A,B,C Correct answer
Explanation

The hubble space Telescope (HST) has accurately determined rate of expansion of the universe. It has contributed to studies of the behaviour of graphite composite structures in vacuum and has observed the optical contamination from residual gases.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

The Hubble Space Telescope is scheduled to retire in which of the following year?

  1. 2012

  2. 2013

  3. 2014

  4. 2015
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Hubble space telescope was launched in 1990 to observe stellar objects It has gathered spectacular images and has helped advanced knowledge in the field of cosmology. After it immense contribution it retired in the year 2014.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

Fill in the blank.
Hubble transmits about _____ of raw science data every week.

  1. 100 gigabits

  2. 140 gigabits

  3. 180 gigabits

  4. 200 gigabits
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hubble data was initially stored on the spacecraft in reel-to-reel tape recorders but these were replaced by solid state data storage facilities during serving missions 2 and 3A. Hubble transmits about 140 gigabits of raw science data every week.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

The Corrective Optics Space Telescope Axial Replacement (COSTAR) system was designed to correct the _______________________ for light focused at the FOC, FOS, and GHRS.

  1. visual aberration

  2. spherical aberration

  3. diffraction

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Corrective Optics Space Telescope Axial Replacement(COSTAR) system was designed to correct the spherical aberration for light focused at the FOC, FOS and GHRS. Spherical aberration is the condition when there is a loss in the definition of the image arising from the surface geometry of a spherical mirror or lens. Hence to solve this  condition COSTAR was designed.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

Astronomical data taken with ________________ must undergo several calibration steps before they are suitable for astronomical analysis

  1. HOST

  2. CCD

  3. CCR

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Astronomical data taken with CCD (charged couple devices) must undergo several calibration steps before they are suitable for astronomical analysis.

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

All images from Hubble are ___________________,in which its cameras incorporate a variety of filters each sensitive to specific wavelengths of light.

  1. advanced diffracted

  2. monochromatic grayscale

  3. Lucky Cam

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

All images from Hubble are monochromatic gray scale, in which its cameras incorporate a variety of filters each sensitive to specific wavelengths of light.