Inter-scan Overheads for Sequences of Drifts with ALFA
... This note is a complement to our previous memo on the use of the “Fixed Azimuth Drift” observing mode using ALFA ( http://alfa.naic.edu/memos/memo041206.pdf) and is intended to be helpful for other ALFA observers, especially those using ALFA in drift mode. A concise summary of geometric issues assoc ...
... This note is a complement to our previous memo on the use of the “Fixed Azimuth Drift” observing mode using ALFA ( http://alfa.naic.edu/memos/memo041206.pdf) and is intended to be helpful for other ALFA observers, especially those using ALFA in drift mode. A concise summary of geometric issues assoc ...
Synopsis by Rachel Haynes
... and space telescopes. While astronomical and space telescope are both used for looking at objects really really far away (eg stars), terrestrial telescopes are used for imaging relatively close objects. That is, ones that are 50 – 1000 meters away, such as hunters would need to do. Important feature ...
... and space telescopes. While astronomical and space telescope are both used for looking at objects really really far away (eg stars), terrestrial telescopes are used for imaging relatively close objects. That is, ones that are 50 – 1000 meters away, such as hunters would need to do. Important feature ...
GAVRT/SETI Activity Which Waterfall Plot? (Lesson Two) Review the
... off of it for 2 seconds, and repeat this pattern for 3 times. Notice how that shows up on the waterfall plot. ...
... off of it for 2 seconds, and repeat this pattern for 3 times. Notice how that shows up on the waterfall plot. ...
Measuring the Solar Diameter with a Michelson Radio
... for a nearby TV satellite. You may need to adjust the receiver attenuation to use the same set of attenuators on the Sun and the satellite. 8. With the dish pointed toward the interferometer centerpiece with the two aluminum mirrors at 90◦ to each other, once again locate the Sun and re-calibrate th ...
... for a nearby TV satellite. You may need to adjust the receiver attenuation to use the same set of attenuators on the Sun and the satellite. 8. With the dish pointed toward the interferometer centerpiece with the two aluminum mirrors at 90◦ to each other, once again locate the Sun and re-calibrate th ...
What is Ocean Color Data? - USF College of Marine Science
... Excerpted from: http://daac.gsfc.nasa.gov/CAMPAIGN_DOCS/OCDST/seawifs_raq.html#Q1 ...
... Excerpted from: http://daac.gsfc.nasa.gov/CAMPAIGN_DOCS/OCDST/seawifs_raq.html#Q1 ...
James Webb Space Telescope
... Ball Aerospace & Technologies Corp. • 1600 Commerce St. • Boulder, CO 80301 • 303-939-6100 • Fax: 303-939-6104 • [email protected] • www.ballaerospace.com ...
... Ball Aerospace & Technologies Corp. • 1600 Commerce St. • Boulder, CO 80301 • 303-939-6100 • Fax: 303-939-6104 • [email protected] • www.ballaerospace.com ...
Resolving power
... Theory of the experiment:Rayleigh’s criterion of resolution: According to Rayleigh’s criterion of resolution, two equally bright sources can be just resolved by any optical system when their distance apart is such that in the diffraction pattern, the maximum due to one falls on the minimum of the du ...
... Theory of the experiment:Rayleigh’s criterion of resolution: According to Rayleigh’s criterion of resolution, two equally bright sources can be just resolved by any optical system when their distance apart is such that in the diffraction pattern, the maximum due to one falls on the minimum of the du ...
Declaration of the Sutherland Central Astronomy Advantage Areas
... regulations will be sent by registered post or a chosen preferred method for comment to persons in the permanent register of interested and affected parties for the Sutherland Central Astronomy Advantage Areas whose existing rights may be directly affected by such regulations before the regulations ...
... regulations will be sent by registered post or a chosen preferred method for comment to persons in the permanent register of interested and affected parties for the Sutherland Central Astronomy Advantage Areas whose existing rights may be directly affected by such regulations before the regulations ...
“Beautiful and cantankerous instruments”: telescopes, technology
... Edwin W. Dennison was one such person. After getting his PhD in astronomy at the University of Michigan, he was hired as a researcher at Caltech. He soon turned his attention toward the development of electronic systems for telescopes. In 1966, Dennison directed what came to be called the AstroElect ...
... Edwin W. Dennison was one such person. After getting his PhD in astronomy at the University of Michigan, he was hired as a researcher at Caltech. He soon turned his attention toward the development of electronic systems for telescopes. In 1966, Dennison directed what came to be called the AstroElect ...
Telescope notes (PowerPoint)
... • Combines information from several widely spread radio telescopes as if it came from a single dish • Resolution will be that of dish whose diameter = largest separation between dishes ...
... • Combines information from several widely spread radio telescopes as if it came from a single dish • Resolution will be that of dish whose diameter = largest separation between dishes ...
Choosing a Telescope - AbergavennyAS.org.uk
... Apochromatics are fantastic astrographs but one scope will not cover all requirements as different focal lengths needed Catadioptrics are good all-rounders, For low cost light buckets Newtonians are unbeatable Other factors to consider include portability, type of mount required, focal length, apert ...
... Apochromatics are fantastic astrographs but one scope will not cover all requirements as different focal lengths needed Catadioptrics are good all-rounders, For low cost light buckets Newtonians are unbeatable Other factors to consider include portability, type of mount required, focal length, apert ...
It might not work. And therefore is not enhancing the technology or
... telescopes for the same purpose because the first one fails before the objective is completed, then some people might believe that NASA is wasting money and then the general public might get angry that money is being wasted instead of being used to benefit them somehow. Telescopes are not cheap to b ...
... telescopes for the same purpose because the first one fails before the objective is completed, then some people might believe that NASA is wasting money and then the general public might get angry that money is being wasted instead of being used to benefit them somehow. Telescopes are not cheap to b ...
COURSE SYLLABUS ASTRONOMY 2015
... nighttime sky viewing, computer simulations, telescope use, and a field trip to Lowell Observatory. The math used is on a level with algebra I. The topics addressed are: the size and scale of our solar system, galaxy, and universe; our Sun and our Moon; the constellations in our sky; both ancient an ...
... nighttime sky viewing, computer simulations, telescope use, and a field trip to Lowell Observatory. The math used is on a level with algebra I. The topics addressed are: the size and scale of our solar system, galaxy, and universe; our Sun and our Moon; the constellations in our sky; both ancient an ...
See the press release - European Astronomical Society
... pupil masking. Over the last years, he benefits from a CNRS tenured position at the Observatory of Paris, allowing him to work on the application of the pupil masking technique to the study of young stellar objects. As an expert in high precision astrometry, he is also deeply involved in the GRAVITY ...
... pupil masking. Over the last years, he benefits from a CNRS tenured position at the Observatory of Paris, allowing him to work on the application of the pupil masking technique to the study of young stellar objects. As an expert in high precision astrometry, he is also deeply involved in the GRAVITY ...
Optics Education in the International Year of Astronomy
... location. Outdoor lighting is used for many reasons including security, sporting events, and advertising. Some outdoor lighting is more efficient in its design and/or placement and limits the amount of light shining up or away from the intended purpose. Using lights at night can be helpful, but ther ...
... location. Outdoor lighting is used for many reasons including security, sporting events, and advertising. Some outdoor lighting is more efficient in its design and/or placement and limits the amount of light shining up or away from the intended purpose. Using lights at night can be helpful, but ther ...
The Hubble Space Telescope Spherical Aberration – It All Started
... Fabrication: In order to eliminate lot-lot variations in material properties, all the key components need to be fabricated from the same lot of Beryllium. Three billets were prepared in this lot: one was reserved for the two mirrors and secondary mirror cell, one for the central tower, and one for t ...
... Fabrication: In order to eliminate lot-lot variations in material properties, all the key components need to be fabricated from the same lot of Beryllium. Three billets were prepared in this lot: one was reserved for the two mirrors and secondary mirror cell, one for the central tower, and one for t ...
PPT - Astron
... • Power lines - Australian standard AS/NZS 2344:1997. Frequency dependence: • Roads: increasing to 400 MHz, then constant • Rail: decreasing with frequency • Appliances/tools: increasing to 300 MHz, assumed constant beyond ...
... • Power lines - Australian standard AS/NZS 2344:1997. Frequency dependence: • Roads: increasing to 400 MHz, then constant • Rail: decreasing with frequency • Appliances/tools: increasing to 300 MHz, assumed constant beyond ...
Document
... stabilize mirrors rather than structure… • Unique access to optical/UV range • Plan on table to fly 2.4m mirror with existing HST instruments (Hubble Origins Probe or HOP); could be as low as $250M. • Need to decide who gets the instruments! ...
... stabilize mirrors rather than structure… • Unique access to optical/UV range • Plan on table to fly 2.4m mirror with existing HST instruments (Hubble Origins Probe or HOP); could be as low as $250M. • Need to decide who gets the instruments! ...
Student Project - Ott Planetarium
... stars. Like ultraviolet and x-rays, the atmosphere prevents gamma rays from reaching the surface of the earth so these wavelengths also need to be studied from space. During its mission, the Compton Gamma Ray Observatory made several important discoveries, such as the production of gamma rays fr ...
... stars. Like ultraviolet and x-rays, the atmosphere prevents gamma rays from reaching the surface of the earth so these wavelengths also need to be studied from space. During its mission, the Compton Gamma Ray Observatory made several important discoveries, such as the production of gamma rays fr ...
R FIXED UNIVERSAL TELESCOPE
... George Ellery Hale1 and the Mount Wilson Observatory stands today as a monument to their collaboration. Ritchey is usually associated with the Ritchey-Chretien system, used in almost all large reflecting telescopes today. The largest telescopes in activity clearly demonstrate the validity of many of ...
... George Ellery Hale1 and the Mount Wilson Observatory stands today as a monument to their collaboration. Ritchey is usually associated with the Ritchey-Chretien system, used in almost all large reflecting telescopes today. The largest telescopes in activity clearly demonstrate the validity of many of ...
AMSAT 1m Dish - Del Mar North
... Premise #3: The way we point antennas now is inadequate for these needs! • Present-day rotors rely on 50 year-old technology. • Rotors with sloppy gears, designed for big yagis • Potentiometers for positioning are unreliable and produce erratic results. • The typical Yaesu rotors equipped for two-a ...
... Premise #3: The way we point antennas now is inadequate for these needs! • Present-day rotors rely on 50 year-old technology. • Rotors with sloppy gears, designed for big yagis • Potentiometers for positioning are unreliable and produce erratic results. • The typical Yaesu rotors equipped for two-a ...
PowerPoint 프레젠테이션
... You have learned that the energy of a photon depends on its wavelength. Photons of radio energy have such long wavelengths that their individual energies are quite low. To get strong signals focused on the antenna, the radio astronomer must build large collecting dishes. ...
... You have learned that the energy of a photon depends on its wavelength. Photons of radio energy have such long wavelengths that their individual energies are quite low. To get strong signals focused on the antenna, the radio astronomer must build large collecting dishes. ...
2015 NSF REU Bifano
... How the REU project integrates with lab research • Along with colleagues in the Mertz lab, we have recently demonstrated an improved way to compensate aberrations in biological microscopes. The transmissive PAW sensor is a key enabler for us because it allows us to measure wavefront shape. Our indus ...
... How the REU project integrates with lab research • Along with colleagues in the Mertz lab, we have recently demonstrated an improved way to compensate aberrations in biological microscopes. The transmissive PAW sensor is a key enabler for us because it allows us to measure wavefront shape. Our indus ...
Synopsis by Michael Hammet
... improvement is to instead use a lightweight borosilicate primary mirror slumped to the net shape of the desired curvature. This method of producing the largest optic in the system reduces the mass of the primary by approximately 75%. When evaluating the optical performance, it is shown that due to e ...
... improvement is to instead use a lightweight borosilicate primary mirror slumped to the net shape of the desired curvature. This method of producing the largest optic in the system reduces the mass of the primary by approximately 75%. When evaluating the optical performance, it is shown that due to e ...
Arecibo Observatory
The Arecibo Observatory is a radio telescope in the municipality of Arecibo, Puerto Rico. This observatory is operated by SRI International, USRA and UMET, under cooperative agreement with the National Science Foundation (NSF). This observatory is also called the National Astronomy and Ionosphere Center, although ""NAIC"" refers to both the observatory and the staff that operates it. From its construction in the 1960s until 2011, the observatory was managed by Cornell University.The Observatory's 1,000 ft (305 m) radio telescope is the world's largest single-aperture telescope. It is used in three major areas of research: radio astronomy, atmospheric science, and radar astronomy. Scientists who want to use the Arecibo Telescope submit proposals that are evaluated by an independent scientific board.The Radio Telescope has made appearances in motion picture and television productions, gaining more recognition in 1999 when it began to collect data for the SETI@home project. It has been listed on the American National Register of Historic Places beginning in 2008. It was the featured listing in the National Park Service's weekly list of October 3, 2008. The Center was named in IEEE Milestone in 2001. It has a visitors center that is open part time.