Dana_Denis_talk_SDSS2013
... • Here the array comprises a grid of small antenna elements spaced by slightly less than l/2, thereby meeting the Nyquist criterion for full spatial sampling of the electric field configuration over the focal plane. The elements are often implemented as shortened “halfwave” dipoles. • The outputs of ...
... • Here the array comprises a grid of small antenna elements spaced by slightly less than l/2, thereby meeting the Nyquist criterion for full spatial sampling of the electric field configuration over the focal plane. The elements are often implemented as shortened “halfwave” dipoles. • The outputs of ...
Telescopes
... colors violet through red. EM radiation with wavelengths shorter than 400 nm or longer than 700 nm exists all around you —you just can’t see it. The full range of electromagnetic radiation, or the electromagnetic spectrum, is shown in Figure 1.4. Like our Sun, every star emits light at a wide range ...
... colors violet through red. EM radiation with wavelengths shorter than 400 nm or longer than 700 nm exists all around you —you just can’t see it. The full range of electromagnetic radiation, or the electromagnetic spectrum, is shown in Figure 1.4. Like our Sun, every star emits light at a wide range ...
star party survey data - Harvard Schools Trust
... Saturn has an asteroid belt. You can never see Venus at midnight. Saturn has no moons. How to find Orion’s belt. Orion nebula has four stars in the middle like mother stars. If you do not have a powered telescope, you have to move it by hand. Not all the moon’s craters are round. Saturn looks like a ...
... Saturn has an asteroid belt. You can never see Venus at midnight. Saturn has no moons. How to find Orion’s belt. Orion nebula has four stars in the middle like mother stars. If you do not have a powered telescope, you have to move it by hand. Not all the moon’s craters are round. Saturn looks like a ...
seeingandhearin5 ima..
... 1) When the object is on the same side of the reflecting or refracting surface as the incoming light the object distance s is positive, otherwise it is negative 2) When the image is on the same side of the reflecting or refracting surface as the outgoing light the image distance s’ is positive (real ...
... 1) When the object is on the same side of the reflecting or refracting surface as the incoming light the object distance s is positive, otherwise it is negative 2) When the image is on the same side of the reflecting or refracting surface as the outgoing light the image distance s’ is positive (real ...
Instruments
... Wide Field Channel (WFC), with a field of view of 202x202 square arcsec covering the range from 3500 Å to 11000 Å and a plate-scale of 0.05 arcsec/pixel; High Resolution Channel (HRC), with a field of view of 29x26 square arcsec covering the range from 1700 Å to 11000 Å and a plate-scale of 0.027 ar ...
... Wide Field Channel (WFC), with a field of view of 202x202 square arcsec covering the range from 3500 Å to 11000 Å and a plate-scale of 0.05 arcsec/pixel; High Resolution Channel (HRC), with a field of view of 29x26 square arcsec covering the range from 1700 Å to 11000 Å and a plate-scale of 0.027 ar ...
Image Formation in the Eye and the Telescope
... Pros and cons of an equatorial mount Once the polar axis has been properly aligned there needs only to be smooth rotation about this one axis (360 degrees per day, to compensate for the Earth’s rotation) to keep a particular celestial object in view. Because this is relatively easy, particularly if ...
... Pros and cons of an equatorial mount Once the polar axis has been properly aligned there needs only to be smooth rotation about this one axis (360 degrees per day, to compensate for the Earth’s rotation) to keep a particular celestial object in view. Because this is relatively easy, particularly if ...
Polarimetry with the Southern African Large Telescope
... With tracker and 11-m pupil centred on primary mirror array and central obstruction (from SAC optics), equivalent to a 9 metre telescope. ...
... With tracker and 11-m pupil centred on primary mirror array and central obstruction (from SAC optics), equivalent to a 9 metre telescope. ...
PowerPoint (PPT) One: The theories of light in historical perspective
... get help? In google, type in: “total internal reflection” + “underwater observer looking up”, first with quotation marks, then without them, and you should get links to Web documents in which the problem is discussed. PPT Four – it’s “self-explanatory”, I believe. Ray focusing by a concave mirror: T ...
... get help? In google, type in: “total internal reflection” + “underwater observer looking up”, first with quotation marks, then without them, and you should get links to Web documents in which the problem is discussed. PPT Four – it’s “self-explanatory”, I believe. Ray focusing by a concave mirror: T ...
PowerPoint (PPT) One: The theories of light in historical perspective
... get help? In google, type in: “total internal reflection” + “underwater observer looking up”, first with quotation marks, then without them, and you should get links to Web documents in which the problem is discussed. PPT Four – it’s “self-explanatory”, I believe. Ray focusing by a concave mirror: T ...
... get help? In google, type in: “total internal reflection” + “underwater observer looking up”, first with quotation marks, then without them, and you should get links to Web documents in which the problem is discussed. PPT Four – it’s “self-explanatory”, I believe. Ray focusing by a concave mirror: T ...
Near Point - Department of Physics and Astronomy
... •θ’ h / fe (look at thick ray which is parallel to axis) •The magnification is: M = θ’ / θ and thus: • Negative M indicates an inverted image. Ch 25 ...
... •θ’ h / fe (look at thick ray which is parallel to axis) •The magnification is: M = θ’ / θ and thus: • Negative M indicates an inverted image. Ch 25 ...
The Big Eye Solar System Now Has Eight Planets Palomar’s Astronomical
... redundant 45 Mbps path for a combined 200 megabitsper-second access speed at the observatory.” Last summer astronomers making use of the Palomar 48-inch Samuel Oschin Telescope announced the discovery of what some are calling our solar system’s tenth planet. The object has been confirmed to be large ...
... redundant 45 Mbps path for a combined 200 megabitsper-second access speed at the observatory.” Last summer astronomers making use of the Palomar 48-inch Samuel Oschin Telescope announced the discovery of what some are calling our solar system’s tenth planet. The object has been confirmed to be large ...
Document
... of square meters with sub-nanometer surface figure errors. Infrared versions will require cooling optics to cryogenic temperatures (to 4 K). Telescopes studying the Sun and its environment in the UV and EUV (20300 nm wavelength) require novel optical coatings and filters, high precision aspheric opt ...
... of square meters with sub-nanometer surface figure errors. Infrared versions will require cooling optics to cryogenic temperatures (to 4 K). Telescopes studying the Sun and its environment in the UV and EUV (20300 nm wavelength) require novel optical coatings and filters, high precision aspheric opt ...
What Comes Around, Goes Around
... The servicing missions that keep Hubble running smoothly have paid off. The orbiting observatory has made about 870,000 observations resulting in more than 560,000 images of celestial objects. Hubble’s contributions to astronomy include providing clues to how galaxies evolve over time and how stars ...
... The servicing missions that keep Hubble running smoothly have paid off. The orbiting observatory has made about 870,000 observations resulting in more than 560,000 images of celestial objects. Hubble’s contributions to astronomy include providing clues to how galaxies evolve over time and how stars ...
Review
... • Angle of reflection equals angle of incidence • Plane mirror: image is virtual, upright, and the same size as the object • Spherical mirror can be concave or convex • Focal length of the mirror: ...
... • Angle of reflection equals angle of incidence • Plane mirror: image is virtual, upright, and the same size as the object • Spherical mirror can be concave or convex • Focal length of the mirror: ...
Lecture - Galileo
... Rules for drawing images for mirrors • Initial parallel ray reflects through focal point. •Ray that passes in initially through focal point reflects parallel from mirror •Ray reflects from C the radius of curvature of mirror reflects along itself. • Ray that reflects from mirror at little point c i ...
... Rules for drawing images for mirrors • Initial parallel ray reflects through focal point. •Ray that passes in initially through focal point reflects parallel from mirror •Ray reflects from C the radius of curvature of mirror reflects along itself. • Ray that reflects from mirror at little point c i ...
Comparison of Solar Energy Output Variations Over Three Days in
... planets and comets, giant clouds of gas and dust, and stars and galaxies, emit light at many different wavelengths. Some of the light they emit has very large wavelengths sometimes as long as a mile! These long waves are in the radio region of the electromagnetic spectrum. • An optical telescope cou ...
... planets and comets, giant clouds of gas and dust, and stars and galaxies, emit light at many different wavelengths. Some of the light they emit has very large wavelengths sometimes as long as a mile! These long waves are in the radio region of the electromagnetic spectrum. • An optical telescope cou ...
ppt - Fusion Energy Research Program
... Peaks grow during exposure (unlike earlier results which exhibited etching) ...
... Peaks grow during exposure (unlike earlier results which exhibited etching) ...
Power Point 8, Oct. 18 - Department of Physics | Oregon State
... State-of-the-art instruments now can see objects with angular size as small as 0.001 second of arc – which corresponds to angular magnification of nearly one million! The simplest optical instrument that magnifies the angular size of distant object is a refracting telescope, consisting of just two l ...
... State-of-the-art instruments now can see objects with angular size as small as 0.001 second of arc – which corresponds to angular magnification of nearly one million! The simplest optical instrument that magnifies the angular size of distant object is a refracting telescope, consisting of just two l ...
Scattered Light in a DMD based Multi-Object Spectrometer
... Astronomers are interested in collecting full spectral information at many spatial locations within the telescope field of view. To this end, two general instrument approaches have been developed. The first involves machining a specific slit mask for the field of interest that is placed at the focal ...
... Astronomers are interested in collecting full spectral information at many spatial locations within the telescope field of view. To this end, two general instrument approaches have been developed. The first involves machining a specific slit mask for the field of interest that is placed at the focal ...
Instruction Manual Meade Instruments Corporation
... The 4 major moons of Jupiter, visible around the planet, changing position each night. ...
... The 4 major moons of Jupiter, visible around the planet, changing position each night. ...
InfraRed Multi-slit Spectrometer (IRMS)
... can be configured in up to 46 slitlets over the entire NFIRAOS field; in practice, some of the slitlets would be made into contiguous slits of lengths that are multiples of 2.4. The width of slits and their placement within the field are remotely configurable in real time. IRMS on TMT will also of ...
... can be configured in up to 46 slitlets over the entire NFIRAOS field; in practice, some of the slitlets would be made into contiguous slits of lengths that are multiples of 2.4. The width of slits and their placement within the field are remotely configurable in real time. IRMS on TMT will also of ...
06_Testbank - Lick Observatory
... adaptive optics), over more wavelengths (e.g., space telescopes), and more efficiently than before (e.g., with larger cameras and faster computers). These advances allow us to test scientific theories by having a wider range of objects to compare and by learning about the physical processes in each ...
... adaptive optics), over more wavelengths (e.g., space telescopes), and more efficiently than before (e.g., with larger cameras and faster computers). These advances allow us to test scientific theories by having a wider range of objects to compare and by learning about the physical processes in each ...
Reflecting telescope
A reflecting telescope (also called a reflector) is an optical telescope which uses a single or combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromatic aberration. Although reflecting telescopes produce other types of optical aberrations, it is a design that allows for very large diameter objectives. Almost all of the major telescopes used in astronomy research are reflectors. Reflecting telescopes come in many design variations and may employ extra optical elements to improve image quality or place the image in a mechanically advantageous position. Since reflecting telescopes use mirrors, the design is sometimes referred to as a ""catoptric"" telescope.