Lecture 9, 9/30/99 - University of Rochester
... their back sides. Their use in telescopes is therefore universal, at all wavelengths from X rays to radio. At ultraviolet, visible and infrared wavelengths, the mirrors are commonly made of polished low-expansion glass or glassy ceramics, coated with thin metallic and dielectric films to make them r ...
... their back sides. Their use in telescopes is therefore universal, at all wavelengths from X rays to radio. At ultraviolet, visible and infrared wavelengths, the mirrors are commonly made of polished low-expansion glass or glassy ceramics, coated with thin metallic and dielectric films to make them r ...
Modern Day astronomical tools
... The ability of a radio telescope to distinguish fine detail in the sky, called angular resolution, depends on the wavelength of observations divided by the size of the antenna. Combine the views of a group of antennas spread over a large area to operate together as one gigantic telescope. Many astro ...
... The ability of a radio telescope to distinguish fine detail in the sky, called angular resolution, depends on the wavelength of observations divided by the size of the antenna. Combine the views of a group of antennas spread over a large area to operate together as one gigantic telescope. Many astro ...
etx® premier edition
... profit, we stubbornly continue to hand craft the optics of every ETX Maksutov-Cassegrain telescope. Obsessive little things like oversized primary mirrors, premium-grade optical glass, ridiculously small engineering tolerances and high-transmission optical coatings add up to make a real difference i ...
... profit, we stubbornly continue to hand craft the optics of every ETX Maksutov-Cassegrain telescope. Obsessive little things like oversized primary mirrors, premium-grade optical glass, ridiculously small engineering tolerances and high-transmission optical coatings add up to make a real difference i ...
Herschel`s Telescopes
... Herschel’s two “workhorse” telescopes – those used for all his later various reviews of the heavens – were his 20-foot reflectors. The earlier and smaller of these in terms of aperture (referred to as the “Small 20-Foot”) used 12-inch mirrors, while the larger and later instrument (called the “Large ...
... Herschel’s two “workhorse” telescopes – those used for all his later various reviews of the heavens – were his 20-foot reflectors. The earlier and smaller of these in terms of aperture (referred to as the “Small 20-Foot”) used 12-inch mirrors, while the larger and later instrument (called the “Large ...
Independant Review
... AWR Technology have been supplying custom GOTO drives for telescopes from venerable Victorian Calvers to 32” Richey Cretiens for many years. They do upgrades for many well known telescope mounts, such as the Russian Alter D-6 and the EQ 5/6 series. So a new product from AWR is an exciting event! The ...
... AWR Technology have been supplying custom GOTO drives for telescopes from venerable Victorian Calvers to 32” Richey Cretiens for many years. They do upgrades for many well known telescope mounts, such as the Russian Alter D-6 and the EQ 5/6 series. So a new product from AWR is an exciting event! The ...
Waves & Oscillations Geometric Optics Physics 42200 3/20/2016
... – Given an optical system, what are the properties of the image that is formed (if any)? – What configuration of optical elements (if any) will produce an image with certain desired characteristics? ...
... – Given an optical system, what are the properties of the image that is formed (if any)? – What configuration of optical elements (if any) will produce an image with certain desired characteristics? ...
Telescopes
... Foci exist Telescope – Device used to detect light from a distance source o Optical telescope – Detects visible light only Reflecting telescope – Uses mirrors Refracting telescope – Uses lenses o Reflecting telescopes are much better than refracting telescopes Glass won’t sag under its own w ...
... Foci exist Telescope – Device used to detect light from a distance source o Optical telescope – Detects visible light only Reflecting telescope – Uses mirrors Refracting telescope – Uses lenses o Reflecting telescopes are much better than refracting telescopes Glass won’t sag under its own w ...
Famous Astronomers - Scholastic New Zealand
... Telescopes About 400 years ago, Galileo discovered that glass lenses in a tube could be used to make a telescope. This could be used to collect light and give a magnified image of a distant object, such as the Moon. After Galileo first turned his small homemade refractor telescope towards the sky an ...
... Telescopes About 400 years ago, Galileo discovered that glass lenses in a tube could be used to make a telescope. This could be used to collect light and give a magnified image of a distant object, such as the Moon. After Galileo first turned his small homemade refractor telescope towards the sky an ...
“Other ideas for gamma ray instruments” 1) Preserving the highest energies
... Benefits associated with extending our coverage at higher E * Required Mechanics/optics on smaller scales (experience, easier, cheaper) * E>10TeV astronomy now is a viable discipline-> Science output guarantied ...
... Benefits associated with extending our coverage at higher E * Required Mechanics/optics on smaller scales (experience, easier, cheaper) * E>10TeV astronomy now is a viable discipline-> Science output guarantied ...
Optics Education in the International Year of Astronomy
... d) Dark Skies Are a Universal Resource Recently, two global, citizen-scientist programs have started to heighten the awareness about the impact of artificial lighting on local environments, and the ongoing loss of a dark night sky as a natural resource for much of the world’s population. Students, f ...
... d) Dark Skies Are a Universal Resource Recently, two global, citizen-scientist programs have started to heighten the awareness about the impact of artificial lighting on local environments, and the ongoing loss of a dark night sky as a natural resource for much of the world’s population. Students, f ...
Telescopes: Windows to the Universe
... CCDs have a much wider dynamic range and greater sensitivity than film cameras – 90% of photon that strike the chip are recorded (only 10% of photons on film are recorded) ...
... CCDs have a much wider dynamic range and greater sensitivity than film cameras – 90% of photon that strike the chip are recorded (only 10% of photons on film are recorded) ...
Long time-series photometry on temperate sites
... This average offset is fed into a PID-loop The PID output is applied to the telescope at f=1/5 Hz. Problems with high wind gusts. Dependency of optimal PID parameters on seeing and guider dead-time, from a telescope model Currently, three PID parameter set per axis are used, ...
... This average offset is fed into a PID-loop The PID output is applied to the telescope at f=1/5 Hz. Problems with high wind gusts. Dependency of optimal PID parameters on seeing and guider dead-time, from a telescope model Currently, three PID parameter set per axis are used, ...
HERA-B RICH light collection system
... speci"c role of this RICH detector. The photosensitve component of the photon detector consists of both the 4 and 16 anode versions of the Hamamatsu R5900 multianode photomultiplier arranged on 36 mm centers as shown in Fig. 2. A basic problem for any RICH detector is to collect Cherenkov light with ...
... speci"c role of this RICH detector. The photosensitve component of the photon detector consists of both the 4 and 16 anode versions of the Hamamatsu R5900 multianode photomultiplier arranged on 36 mm centers as shown in Fig. 2. A basic problem for any RICH detector is to collect Cherenkov light with ...
Introduction History of Optics Slides
... Euclid ~300BC • Greek mathematician • His book Elements used to teach geometry for over 2000 years. • Also wrote about optics of the eye, but thought rays exit the eye and we “see” whatever these rays fall on. ...
... Euclid ~300BC • Greek mathematician • His book Elements used to teach geometry for over 2000 years. • Also wrote about optics of the eye, but thought rays exit the eye and we “see” whatever these rays fall on. ...
Chris_Salter_RadioAst_Tech_2011_REU
... Yes — Thanks to radio interferometery! Despite dealing with the longest wavelength electromagnetic waves, radio astronomy has provided our most detailed images of the Universe, achieving not only arcsec resolution, but even sub-milliarcsec resolution! Combining the voltages from 2 telescopes separat ...
... Yes — Thanks to radio interferometery! Despite dealing with the longest wavelength electromagnetic waves, radio astronomy has provided our most detailed images of the Universe, achieving not only arcsec resolution, but even sub-milliarcsec resolution! Combining the voltages from 2 telescopes separat ...
Optical telescope
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.There are three primary types of optical telescope: refractors, which use lenses (dioptrics) reflectors, which use mirrors (catoptrics) catadioptric telescopes, which combine lenses and mirrorsA telescope's light gathering power and ability to resolve small detail is directly related to the diameter (or aperture) of its objective (the primary lens or mirror that collects and focuses the light). The larger the objective, the more light the telescope collects and the finer detail it resolves.People use telescopes and binoculars for activities such as observational astronomy, ornithology, pilotage and reconnaissance, and watching sports or performance arts.