Chapter 5 - Astronomy
... 1. Light travels in a straight line as long as it remains in the same medium (i.e., the material through which light travels). 2. Refraction is the bending of light as it crosses the boundary (interface) between two materials in which it travels at different speeds. 3. The amount of refraction is de ...
... 1. Light travels in a straight line as long as it remains in the same medium (i.e., the material through which light travels). 2. Refraction is the bending of light as it crosses the boundary (interface) between two materials in which it travels at different speeds. 3. The amount of refraction is de ...
Space Mission Scrapbook - Willoughby
... reaction wheels. Pointing will be performed such that the nominal viewing axis never be within 45 degrees of the Sun to protect the viewing optics from heating. The spacecraft's velocity will need to be determined to an accuracy of 20 mm/sec or better in order to correct for relativistic stellar abe ...
... reaction wheels. Pointing will be performed such that the nominal viewing axis never be within 45 degrees of the Sun to protect the viewing optics from heating. The spacecraft's velocity will need to be determined to an accuracy of 20 mm/sec or better in order to correct for relativistic stellar abe ...
Tools for Studying Space
... A narrow band of radio waves is able to penetrate the atmosphere, by measuring these waves we can map the galactic distribution of hydrogen Radio Telescope – a telescope designed to make observations in radio wavelengths A radio telescope focuses the incoming radio waves on an antenna, which absorbs ...
... A narrow band of radio waves is able to penetrate the atmosphere, by measuring these waves we can map the galactic distribution of hydrogen Radio Telescope – a telescope designed to make observations in radio wavelengths A radio telescope focuses the incoming radio waves on an antenna, which absorbs ...
poster
... variations of BL Lac objects and using these variations to investigate the physics at work in these objects. BL Lacs are the most extreme example of an AGN with highly variable continuum emission as one of their defining characteristics. We have undertaken a program to monitor these continuum variat ...
... variations of BL Lac objects and using these variations to investigate the physics at work in these objects. BL Lacs are the most extreme example of an AGN with highly variable continuum emission as one of their defining characteristics. We have undertaken a program to monitor these continuum variat ...
The First Revolution Newton`s Telescope
... have been photographing the sky with film for decades. Photography itself was a major revolution in astronomy, allowing for objective observations of objects and the capture of much fainter detail than the human eye could detect. However, the process of capturing film astrophotos was arduous and req ...
... have been photographing the sky with film for decades. Photography itself was a major revolution in astronomy, allowing for objective observations of objects and the capture of much fainter detail than the human eye could detect. However, the process of capturing film astrophotos was arduous and req ...
Presentation UE6
... So far it has detected 15 planets First 5 in the habitable zone last 1/2/11 1200+ candidates ...
... So far it has detected 15 planets First 5 in the habitable zone last 1/2/11 1200+ candidates ...
Lecture 4: Telescopes
... FOV- Angular size of the viewing field. Usually given in degrees, arcminutes (1/60 th of a degree) or arcseconds (1/60 th of an arcminute) Magnification - ratio of the focal length of telescope and focal length of eyepiece (f_telescope / f_eyepiece) Light Gathering Power - proportional to the square ...
... FOV- Angular size of the viewing field. Usually given in degrees, arcminutes (1/60 th of a degree) or arcseconds (1/60 th of an arcminute) Magnification - ratio of the focal length of telescope and focal length of eyepiece (f_telescope / f_eyepiece) Light Gathering Power - proportional to the square ...
The Imaging Chain for Optical Astronomy
... – recall F ratio, F=f/D, where f is focal length of collecting element and D is diameter of aperture – for two reflecting telescopes with same F ratio and the same size detector, the telescope with smaller D produces images that cover a wider angle ...
... – recall F ratio, F=f/D, where f is focal length of collecting element and D is diameter of aperture – for two reflecting telescopes with same F ratio and the same size detector, the telescope with smaller D produces images that cover a wider angle ...
Telescopes and Astronomical Instruments
... is distorting the light waves coming in, and make a correction with a flexible mirror that was fast enough (100 times per second) to keep up with the turbulence. Amazingly, we can now begin to do that! The technique is called “adaptive optics”. You use a small “rubber mirror” near the focus (not the ...
... is distorting the light waves coming in, and make a correction with a flexible mirror that was fast enough (100 times per second) to keep up with the turbulence. Amazingly, we can now begin to do that! The technique is called “adaptive optics”. You use a small “rubber mirror” near the focus (not the ...
Estimating the Costs of Extremely Large Telescopes
... Key milestone: Baseline Design which will answer the following key design issues/trades ...
... Key milestone: Baseline Design which will answer the following key design issues/trades ...
View from the space
... and so on. Study of these rays provide us clue as to the process that takes place, which are not normally visible in the light spectrum. Nevertheless, electromagnetic radiation from space is unable to reach the surface of the Earth except at a very few wavelengths, such as the visible spectrum, radi ...
... and so on. Study of these rays provide us clue as to the process that takes place, which are not normally visible in the light spectrum. Nevertheless, electromagnetic radiation from space is unable to reach the surface of the Earth except at a very few wavelengths, such as the visible spectrum, radi ...
Telescope Quick Start Guide
... F ratio is inversely proportional to “speed” of telescope where speed is brightness per pixel per second at focal plane Large F ratio -> slower speed -> longer exposure times for detector Small F ratio -> faster speed -> shorter exposure times for detector Small F ratio is also good for telescopes w ...
... F ratio is inversely proportional to “speed” of telescope where speed is brightness per pixel per second at focal plane Large F ratio -> slower speed -> longer exposure times for detector Small F ratio -> faster speed -> shorter exposure times for detector Small F ratio is also good for telescopes w ...
CAPTURING STARLIGHT
... CCDs convert light into electronic signals via the photoelectric effect. Images are stored on computers in digital form. Most research-grade CCDs are cryogenically-cooled to extremely low temperatures to improve their performance. ...
... CCDs convert light into electronic signals via the photoelectric effect. Images are stored on computers in digital form. Most research-grade CCDs are cryogenically-cooled to extremely low temperatures to improve their performance. ...
Lecture 4: Telescopes Web site Stuff from last time Naked eye and magnitudes
... FOV- Angular size of the viewing field. Usually given in degrees, arcminutes (1/60 th of a degree) or arcseconds (1/60 th of an arcminute) Magnification - ratio of the focal length of telescope and focal length of eyepiece (f_telescope / f_eyepiece) Light Gathering Power - proportional to the squar ...
... FOV- Angular size of the viewing field. Usually given in degrees, arcminutes (1/60 th of a degree) or arcseconds (1/60 th of an arcminute) Magnification - ratio of the focal length of telescope and focal length of eyepiece (f_telescope / f_eyepiece) Light Gathering Power - proportional to the squar ...
Observatories_handout - Department of Physics and Astronomy
... It was a small silver ball, less than 1 foot across with antennas that sent out a “beep-beep-beep,” signaling it was the first satellite to make it successfully into space. PRESENT The Hubble Space Telescope (HST), launched in 1990 and still in space, is a large, space based observatory. Has r ...
... It was a small silver ball, less than 1 foot across with antennas that sent out a “beep-beep-beep,” signaling it was the first satellite to make it successfully into space. PRESENT The Hubble Space Telescope (HST), launched in 1990 and still in space, is a large, space based observatory. Has r ...
Presentazione di PowerPoint
... angular diameter for several measurements of seeing for a perfect guiding and well pointed instrument For this reason we choose to increase the pinhole dimension for IQuEYE as we will see later ...
... angular diameter for several measurements of seeing for a perfect guiding and well pointed instrument For this reason we choose to increase the pinhole dimension for IQuEYE as we will see later ...
E 3.1 Notes addition The James Webb and MOST Telescope
... Matthews was named Principal Investigator and Mission Scientist. About the size and shape of a large suitcase, the satellite weighs only 54 kilograms and is equipped with an ultra high precision telescope that measures only 15 centimetres in diameter. Despite its diminutive size, it is ten times mor ...
... Matthews was named Principal Investigator and Mission Scientist. About the size and shape of a large suitcase, the satellite weighs only 54 kilograms and is equipped with an ultra high precision telescope that measures only 15 centimetres in diameter. Despite its diminutive size, it is ten times mor ...
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).