Half Term Work On Telescopes and Lenses
... (i) The Closest approach of the planet Mars in recent history was 55 000 000 km. Calculate the angle subtended at the eye on Earth by this planet. (ii) Calculate the the angle subtended by Mars through a simple astronomical telescope 1.5m long with an objective lens of focal length 1.37m ...
... (i) The Closest approach of the planet Mars in recent history was 55 000 000 km. Calculate the angle subtended at the eye on Earth by this planet. (ii) Calculate the the angle subtended by Mars through a simple astronomical telescope 1.5m long with an objective lens of focal length 1.37m ...
Due November 10 at the start of class Michelson Interferometer (30%)
... A lens is to be coated with a thin film with an index of refraction of 1.2 in order to reduce the reflection from its surface at λ=5000 A°. The glass of the lens has a refractive index of 1.4. A. What is the minimum thickness of the coating that will minimize the intensity of the reflected light? B. ...
... A lens is to be coated with a thin film with an index of refraction of 1.2 in order to reduce the reflection from its surface at λ=5000 A°. The glass of the lens has a refractive index of 1.4. A. What is the minimum thickness of the coating that will minimize the intensity of the reflected light? B. ...
optical telescopes
... Schmidt correcting lens, then strikes the spherical primary mirror and is reflected back up the tube and intercepted by a small secondary mirror which reflects the light out an opening in the rear of the instrument where the image is formed at the eyepiece. ...
... Schmidt correcting lens, then strikes the spherical primary mirror and is reflected back up the tube and intercepted by a small secondary mirror which reflects the light out an opening in the rear of the instrument where the image is formed at the eyepiece. ...
lecture10
... • Resolving power: a = 11.6/D The last, and least important, feature is magnification ...
... • Resolving power: a = 11.6/D The last, and least important, feature is magnification ...
The Sun (continued). - Department of Physics and Astronomy
... The Sun shines with energy generated by fusion of hydrogen into helium in its core. Gravitational equilibrium determines the Sun’s interior structure and maintains a steady nuclear burning rate. ...
... The Sun shines with energy generated by fusion of hydrogen into helium in its core. Gravitational equilibrium determines the Sun’s interior structure and maintains a steady nuclear burning rate. ...
Charge-Coupled Device (CCD) Detectors
... • A theorem, developed by H. Nyquist, which states that an analog signal waveform may be uniquely reconstructed, without error, from samples taken at equal time intervals. The sampling rate must be equal to, or greater than, twice the highest frequency component in the analog signal. ...
... • A theorem, developed by H. Nyquist, which states that an analog signal waveform may be uniquely reconstructed, without error, from samples taken at equal time intervals. The sampling rate must be equal to, or greater than, twice the highest frequency component in the analog signal. ...
Slide 1
... Expected Duration: 5+ years. Orbit: earth-trailing, heliocentric. Telescope: 85 cm diameter; largest infrared telescope ever launched into space. ...
... Expected Duration: 5+ years. Orbit: earth-trailing, heliocentric. Telescope: 85 cm diameter; largest infrared telescope ever launched into space. ...
The Dobson Space Telescope
... showed, an inclination precision rate of Figure 1 : DST Orbit 0,1° per year and overflighttime changes within a few minutes every month that seams to be acceptable. 3.2 Attitude Control System Facing high resolution of DST means putting focus on the ability doing the satellites job with less vibrati ...
... showed, an inclination precision rate of Figure 1 : DST Orbit 0,1° per year and overflighttime changes within a few minutes every month that seams to be acceptable. 3.2 Attitude Control System Facing high resolution of DST means putting focus on the ability doing the satellites job with less vibrati ...
SUPERSHARP – a proposal to ESA
... • Build it in Europe: If you compare like-for-like, ESA missions are probably less expensive than NASA ones. • Relax the instrument contrast requirement: US studies argue that a speckle contrast of 10-10 is needed but recent ground based observations suggest that this can be relaxed by ~100-1000x by ...
... • Build it in Europe: If you compare like-for-like, ESA missions are probably less expensive than NASA ones. • Relax the instrument contrast requirement: US studies argue that a speckle contrast of 10-10 is needed but recent ground based observations suggest that this can be relaxed by ~100-1000x by ...
A Telescope as Sharp as Hubble — But On the Ground
... world. It's understandable, given the astounding images and spectacular science the instrument has been delivering since it went into full operation back in 1993. In fact, though, the Hubble is relatively of puny. The mirror at its heart is just 7.9 ft. (2.4 m) across, which gives it only about a qu ...
... world. It's understandable, given the astounding images and spectacular science the instrument has been delivering since it went into full operation back in 1993. In fact, though, the Hubble is relatively of puny. The mirror at its heart is just 7.9 ft. (2.4 m) across, which gives it only about a qu ...
Vibration Isolation in Electro-Optical Spacecraft
... This report discussing vibration in electro-optical spacecraft: the sources of vibration, methods of analyzing and isolating vibration, and the effects of vibration on the image. There was insufficient time to organize the material to the author’s liking. Hopefully the Powerpoint presentation will h ...
... This report discussing vibration in electro-optical spacecraft: the sources of vibration, methods of analyzing and isolating vibration, and the effects of vibration on the image. There was insufficient time to organize the material to the author’s liking. Hopefully the Powerpoint presentation will h ...
A reflecting telescope (also called a reflector curved mirrors that
... A space observatory is any instrument in outer space which is used for observation of distant planets, galaxies, and other outer space objects. This category is distinct from other observatories located in space that are pointe pointed d toward the earth for the purpose of scientific research, rese ...
... A space observatory is any instrument in outer space which is used for observation of distant planets, galaxies, and other outer space objects. This category is distinct from other observatories located in space that are pointe pointed d toward the earth for the purpose of scientific research, rese ...
Refraction - Geneva 304
... Principle of reflection and the reflecting telescope Here is a Java applet illustrating the use of a mirror (a diverging or convex mirror in this case) to form an image. The largest optical telescopes are reflecting rather than refracting telescopes: it is easier to build and support large mirro ...
... Principle of reflection and the reflecting telescope Here is a Java applet illustrating the use of a mirror (a diverging or convex mirror in this case) to form an image. The largest optical telescopes are reflecting rather than refracting telescopes: it is easier to build and support large mirro ...
Telescopes
... Telescopes: Extending Our Senses Today’s Lecture: • Finish discussing light Why is the sky blue and sunsets red? • The tools of astronomers (Chapter 3, pages 38-63) Introduction to telescopes Different telescopes for different types of light • Phases of the Moon (Chapter 4, pages 64-68) Explain the ...
... Telescopes: Extending Our Senses Today’s Lecture: • Finish discussing light Why is the sky blue and sunsets red? • The tools of astronomers (Chapter 3, pages 38-63) Introduction to telescopes Different telescopes for different types of light • Phases of the Moon (Chapter 4, pages 64-68) Explain the ...
CHAPTER 10: SPACE EXPLORATION
... Space probes are launched to collect information by taking photographs of our solar system. c. space station space stations provide a place in space for astronaut to carry out studies while in space. Russia’s space station-Salyut, America’s – Skylab. The International Space Station (ISS) is now bein ...
... Space probes are launched to collect information by taking photographs of our solar system. c. space station space stations provide a place in space for astronaut to carry out studies while in space. Russia’s space station-Salyut, America’s – Skylab. The International Space Station (ISS) is now bein ...
The Sun-Earth-Moon System
... focused with mirrors- reflecting telescope X-Rays can’t be focused by normal mirrors Gamma rays can’t be focused at all ...
... focused with mirrors- reflecting telescope X-Rays can’t be focused by normal mirrors Gamma rays can’t be focused at all ...
Light and Telescopes - Otterbein University
... Light hits Matter: Refraction • Light travels at different speeds in vacuum, air, and other substances • When light hits the material at an angle, part of it slows down while the rest continues at the original speed – results in a change of direction – Different colors bend different amounts – pris ...
... Light hits Matter: Refraction • Light travels at different speeds in vacuum, air, and other substances • When light hits the material at an angle, part of it slows down while the rest continues at the original speed – results in a change of direction – Different colors bend different amounts – pris ...
04 Astronomical Tools
... Computer-controlled mirror supports adjust the mirror surface (many times per second) to compensate for distortions by atmospheric turbulence ...
... Computer-controlled mirror supports adjust the mirror surface (many times per second) to compensate for distortions by atmospheric turbulence ...
Light and Telescopes - Otterbein University
... Light hits Matter (II): Reflection • Light that hits a mirror is reflected at the same angle it was incident from • Proper design of a mirror (the shape of a parabola) can focus all rays incident on the mirror to a single place ...
... Light hits Matter (II): Reflection • Light that hits a mirror is reflected at the same angle it was incident from • Proper design of a mirror (the shape of a parabola) can focus all rays incident on the mirror to a single place ...
Below is a table of advantages and disadvantages of different types
... Below is a table of advantages and disadvantages of different types of telescopes. The writing in red is in the wrong place can you put it into the correct place on the table? Type of telescope Refractor ...
... Below is a table of advantages and disadvantages of different types of telescopes. The writing in red is in the wrong place can you put it into the correct place on the table? Type of telescope Refractor ...
Ch. 5
... The two major reasons why telescopes with larger apertures are better than smaller telescopes are greater collecting area and better angular resolution. The primary purpose of a telescope is to make faint objects bright enough to detect. Larger telescope mirrors have a larger surface area and can th ...
... The two major reasons why telescopes with larger apertures are better than smaller telescopes are greater collecting area and better angular resolution. The primary purpose of a telescope is to make faint objects bright enough to detect. Larger telescope mirrors have a larger surface area and can th ...
Chapter Review
... Each form of electromagnetic radiation provides different information about objects in space. Astronomers use different types of telescopes to gather visible light and other forms of radiation. ...
... Each form of electromagnetic radiation provides different information about objects in space. Astronomers use different types of telescopes to gather visible light and other forms of radiation. ...
radio telescope
... Space telescopes orbit above Earth’s atmosphere and thus produce clearer images than Earth-based telescopes. Hubble Space Telescope • The first space telescope, built by NASA, was the Hubble Space Telescope. Hubble was put into orbit around Earth in April 1990. ...
... Space telescopes orbit above Earth’s atmosphere and thus produce clearer images than Earth-based telescopes. Hubble Space Telescope • The first space telescope, built by NASA, was the Hubble Space Telescope. Hubble was put into orbit around Earth in April 1990. ...
XMM-Newton
The XMM-Newton, also known as the X-ray Multi-Mirror Mission and the High Throughput X-ray Spectroscopy Mission, is an orbiting X-ray observatory launched by ESA in December 1999 on an Ariane 5 rocket. It is named in honor of Sir Isaac Newton. The telescope was placed in a very eccentric 48 hour elliptical orbit at 40°; at its apogee it is nearly 114,000 kilometres (71,000 mi) from Earth, while the perigee is only 7,000 kilometres (4,300 mi).