The effect of the fluorescence yield selection on the relative energy
... the energies EAuger and ETA that respectively Auger and TA would reconstruct for the same shower. Next we discuss the results for a particular example. The case is a CORSIKA shower initiated by a Fe nuclei of 10 EeV and a zenith angle θ = 26◦ . This shower reaches its maximum development at an atmos ...
... the energies EAuger and ETA that respectively Auger and TA would reconstruct for the same shower. Next we discuss the results for a particular example. The case is a CORSIKA shower initiated by a Fe nuclei of 10 EeV and a zenith angle θ = 26◦ . This shower reaches its maximum development at an atmos ...
Telescope Web Sites
... - The map of the top of Mauna Kea http://www.naoj.org/ - Subaru 8.3 meter http://www.noao.edu/usgp/usgp.html - Gemini North and South – 8.1 meter http://www.gemini.edu/media/ http://www.gemini.edu/media/GSDedication/ - Cerro Pachon in Chile has Gemini South http://www.eso.org/paranal/ http://www.eso ...
... - The map of the top of Mauna Kea http://www.naoj.org/ - Subaru 8.3 meter http://www.noao.edu/usgp/usgp.html - Gemini North and South – 8.1 meter http://www.gemini.edu/media/ http://www.gemini.edu/media/GSDedication/ - Cerro Pachon in Chile has Gemini South http://www.eso.org/paranal/ http://www.eso ...
A Beginner`s Guide to Choosing Binoculars and Telescopes for
... Because of their larger aperture, a pair of 10×80 binoculars lets you see fainter objects than a 10x50 pair. The trade-off? Bigger lenses mean more weight, and lenses larger than 50 mm are heavy which makes it harder to hold such binoculars steady for any length of time. Binoculars also allow viewin ...
... Because of their larger aperture, a pair of 10×80 binoculars lets you see fainter objects than a 10x50 pair. The trade-off? Bigger lenses mean more weight, and lenses larger than 50 mm are heavy which makes it harder to hold such binoculars steady for any length of time. Binoculars also allow viewin ...
6671-09_stacie_hvisc - LOFT, Large Optics Fabrication and
... This presentation will cover Why we want to do this (background)? What is a structure function? Describe a tool for people to use to convert commonly known information (Zernikes) into knowledge useful for telescopes (structure functions) ...
... This presentation will cover Why we want to do this (background)? What is a structure function? Describe a tool for people to use to convert commonly known information (Zernikes) into knowledge useful for telescopes (structure functions) ...
Spatial resolution and field of view, sensitivity
... Optical Design Aberrations: Spherical, Offaxis Parabola in AO System ...
... Optical Design Aberrations: Spherical, Offaxis Parabola in AO System ...
THE LAS CAMPANAS INFRARED SURVEY CAMERA S. E. Persson
... Recent rapid improvement in the quality and size of nearinfrared imaging array detectors has led to great advances in many areas of astronomy, and the time is opportune to apply them to ambitious surveys. The camera described in this paper has been developed for the purpose of conducting deep (Ks ...
... Recent rapid improvement in the quality and size of nearinfrared imaging array detectors has led to great advances in many areas of astronomy, and the time is opportune to apply them to ambitious surveys. The camera described in this paper has been developed for the purpose of conducting deep (Ks ...
AstroMaster Series Telescopes
... the image with an eyepiece would keep the reflector from working, a flat mirror called a diagonal intercepts the light and points it out the side of the tube at right angles to the tube. The eyepiece is placed there for easy viewing. ...
... the image with an eyepiece would keep the reflector from working, a flat mirror called a diagonal intercepts the light and points it out the side of the tube at right angles to the tube. The eyepiece is placed there for easy viewing. ...
this owner`s manual for Apertura dobs
... object relatively centered in the eyepiece. Using higher magnification means that you have to make more frequent tracking adjustments than when using lower magnification. A popular method for locating night sky objects is called “star-hopping.” Start by finding a known star or moon or planet, and s ...
... object relatively centered in the eyepiece. Using higher magnification means that you have to make more frequent tracking adjustments than when using lower magnification. A popular method for locating night sky objects is called “star-hopping.” Start by finding a known star or moon or planet, and s ...
Custom Solutions Catalog
... The Large Black frame features spring-hinged temples while the Small Black frame includes a gold metal accent around the side shields for additional style. The protection on both styles comes from shields on the top and bottom of the lens as well as from a custom made side shield. Although providing ...
... The Large Black frame features spring-hinged temples while the Small Black frame includes a gold metal accent around the side shields for additional style. The protection on both styles comes from shields on the top and bottom of the lens as well as from a custom made side shield. Although providing ...
Bioptic telescopes - The College of Optometrists
... Psychological adjustment to the onset of visual impairment mimics the grieving process as the individual can experience emotions of anger, depression and disbelief before ‘acceptance’. ‘Acceptance’ means realisation of the sight loss, with an attitude of employing available services and aids, whilst ...
... Psychological adjustment to the onset of visual impairment mimics the grieving process as the individual can experience emotions of anger, depression and disbelief before ‘acceptance’. ‘Acceptance’ means realisation of the sight loss, with an attitude of employing available services and aids, whilst ...
P2830syllSp07
... An investigation of naturally occuring optical phenomena, with an emphasis on observational characteristics and causes. Prerequisites: PHYS 1113 or PHYS 1213 or instructor's permission. Course objectives and learning goals: Optics is an interdisciplinary science, ranging from simple lenses to sophis ...
... An investigation of naturally occuring optical phenomena, with an emphasis on observational characteristics and causes. Prerequisites: PHYS 1113 or PHYS 1213 or instructor's permission. Course objectives and learning goals: Optics is an interdisciplinary science, ranging from simple lenses to sophis ...
What You need to know - Peterborough Astronomical Society
... bright views across the field, and this is nice to have if you can afford $500 or $1000 or more. But it’s not necessary to pay this much. As a rule of thumb, get stargazing binoculars with an aperture of 35 mm to 60 mm aperture and a magnification of 7x to 10x. So a pair of 7x35’s is about the minim ...
... bright views across the field, and this is nice to have if you can afford $500 or $1000 or more. But it’s not necessary to pay this much. As a rule of thumb, get stargazing binoculars with an aperture of 35 mm to 60 mm aperture and a magnification of 7x to 10x. So a pair of 7x35’s is about the minim ...
July-August 2015 - Nottingham Astronomical Society
... a focal length of 12000mm (40 feet). The large telescope in the NAS observatory has a focal length of 96" (2438mm), and an aperture of 24" (610mm); it is f/4 (see below). The focal ratio of a telescope (or other optical systems) is simply a value obtained by dividing the focal length of the telescop ...
... a focal length of 12000mm (40 feet). The large telescope in the NAS observatory has a focal length of 96" (2438mm), and an aperture of 24" (610mm); it is f/4 (see below). The focal ratio of a telescope (or other optical systems) is simply a value obtained by dividing the focal length of the telescop ...
Introduction - Arecibo Observatory
... (RIPL) that will survey 29 low-mass, active (radio-loud) M-dwarf stars over 3 years. This would have sub-Jovian planet mass sensitivity at distances of about 1~AU from the star. They also note that, ``Radio astrometric planet searches occupy a unique volume in planet discovery and characterization p ...
... (RIPL) that will survey 29 low-mass, active (radio-loud) M-dwarf stars over 3 years. This would have sub-Jovian planet mass sensitivity at distances of about 1~AU from the star. They also note that, ``Radio astrometric planet searches occupy a unique volume in planet discovery and characterization p ...
Astronomytests a
... collimation, both out of the box and as an ongoing process. I’ve seen many amateur astronomers dissatisfied with the performance of their SCTs and yet unaware of how to collimate them properly. Until fairly recently, the best way to collimate an SCT was the star test — checking optical alignment by ...
... collimation, both out of the box and as an ongoing process. I’ve seen many amateur astronomers dissatisfied with the performance of their SCTs and yet unaware of how to collimate them properly. Until fairly recently, the best way to collimate an SCT was the star test — checking optical alignment by ...
From Musician to Astronomer: The Great William Herschel
... astronomical observer in a climate like that of England. It may be hoped, that his name will endure as long as the planetary system, to illustrate which he has devoted his ...
... astronomical observer in a climate like that of England. It may be hoped, that his name will endure as long as the planetary system, to illustrate which he has devoted his ...
Planets Around M-dwarfs – Astrometric Detection and Orbit
... the isokinetic patch is the dominant scale for astrometric precision (Cameron, Britton & Kulkarni 2009), a wide field of view of several arcminutes will optimize the number of astrometric reference stars accessible. These capabilities are ...
... the isokinetic patch is the dominant scale for astrometric precision (Cameron, Britton & Kulkarni 2009), a wide field of view of several arcminutes will optimize the number of astrometric reference stars accessible. These capabilities are ...
Read the article
... collimation, both out of the box and as an ongoing process. I’ve seen many amateur astronomers dissatisfied with the performance of their SCTs and yet unaware of how to collimate them properly. Until fairly recently, the best way to collimate an SCT was the star test — checking optical alignment by ...
... collimation, both out of the box and as an ongoing process. I’ve seen many amateur astronomers dissatisfied with the performance of their SCTs and yet unaware of how to collimate them properly. Until fairly recently, the best way to collimate an SCT was the star test — checking optical alignment by ...
Lecture 22 - Louisiana State University
... which produces a real image on a “screen” (retina) which is transmitted to the brain via the optical nerve. The cristalline automatically adjusts itself so we see well any object placed between infinity and a distance called “near point” (about 25cm for a typical 20 year old). The “image distance” i ...
... which produces a real image on a “screen” (retina) which is transmitted to the brain via the optical nerve. The cristalline automatically adjusts itself so we see well any object placed between infinity and a distance called “near point” (about 25cm for a typical 20 year old). The “image distance” i ...
Frontiers of Astrophysics - Space Telescope Science Institute
... galaxies at redshift up to 10. Progress on these objects is going to be slow because they are too faint for any existing telescope to take spectra and verify their redshift and measure their properties. ...
... galaxies at redshift up to 10. Progress on these objects is going to be slow because they are too faint for any existing telescope to take spectra and verify their redshift and measure their properties. ...
EQUIPMENT
... Five of the eight PROMPTChile telescopes, with our Milky Way galaxy and the planet Venus in the background. Dr. Reichart and his students added a second PROMPT site in 2013, at the Siding Spring Observatory (SSO) in Australia. It is night in Australia when it is day in the United States. The PROMPT ...
... Five of the eight PROMPTChile telescopes, with our Milky Way galaxy and the planet Venus in the background. Dr. Reichart and his students added a second PROMPT site in 2013, at the Siding Spring Observatory (SSO) in Australia. It is night in Australia when it is day in the United States. The PROMPT ...
2. Astronomers` Tools - Lawrencehallofscience
... Nobel prize for this achievement in 2009. Today, it’s common for people to carry CCD cameras in their purses or pockets all the time, in the guise of mobile phones with cameras. CCDs have the ability to transfer electric charge along the surface of a semiconductor and can receive charge by convertin ...
... Nobel prize for this achievement in 2009. Today, it’s common for people to carry CCD cameras in their purses or pockets all the time, in the guise of mobile phones with cameras. CCDs have the ability to transfer electric charge along the surface of a semiconductor and can receive charge by convertin ...
Very Large Telescope
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The Very Large Telescope (VLT) is a telescope operated by the European Southern Observatory on Cerro Paranal in the Atacama Desert of northern Chile. The VLT consists of four individual telescopes, each with a primary mirror 8.2 m across, which are generally used separately but can be used together to achieve very high angular resolution. The four separate optical telescopes are known as Antu, Kueyen, Melipal and Yepun, which are all words for astronomical objects in the Mapuche language. The telescopes form an array which is complemented by four movable Auxiliary Telescopes (ATs) of 1.8 m aperture.The VLT operates at visible and infrared wavelengths. Each individual telescope can detect objects roughly four billion times fainter than can be detected with the naked eye, and when all the telescopes are combined, the facility can achieve an angular resolution of about 0.001 arc-second (This is equivalent to roughly 2 meters resolution at the distance of the Moon).In single telescope mode of operation angular resolution is about 0.05 arc-second.The VLT is the most productive ground-based facility for astronomy, with only the Hubble Space Telescope generating more scientific papers among facilities operating at visible wavelengths. Among the pioneering observations carried out using the VLT are the first direct image of an exoplanet, the tracking of individual stars moving around the supermassive black hole at the centre of the Milky Way, and observations of the afterglow of the furthest known gamma-ray burst.