Ground-Conjugate Wide Field Adaptive Optics for the ELTs F. Rigaut
... considerations of more practical sites for the construction of an ELT. It has to be noted that during this discussion, the issue of how the turbulent volume is sensed was not addressed. The computations made here assume a perfect knowledge of the turbulence volume. This might seem restrictive, but i ...
... considerations of more practical sites for the construction of an ELT. It has to be noted that during this discussion, the issue of how the turbulent volume is sensed was not addressed. The computations made here assume a perfect knowledge of the turbulence volume. This might seem restrictive, but i ...
User`s Manual (Updated 9
... errors are multiplied by the gain setting in order to correct part of the calculated error. In general these calculations and tip-tilt updates are done at least 100 times per second. By correcting only a portion of the error at a relatively high frequency it is possible to minimize the effects of no ...
... errors are multiplied by the gain setting in order to correct part of the calculated error. In general these calculations and tip-tilt updates are done at least 100 times per second. By correcting only a portion of the error at a relatively high frequency it is possible to minimize the effects of no ...
The US Air Force Academy Falcon Telescope Network
... The Falcon Telescope Network (FTN) is a global network of small aperture telescopes developed by the Center for Space Situational Awareness Research in the Department of Physics at the United States Air Force Academy (USAFA). Consisting of commercially available equipment, the FTN is a collaborative ...
... The Falcon Telescope Network (FTN) is a global network of small aperture telescopes developed by the Center for Space Situational Awareness Research in the Department of Physics at the United States Air Force Academy (USAFA). Consisting of commercially available equipment, the FTN is a collaborative ...
History of the Telescope
... used as a meridian instrument. Since almost all light is passed through the glass, and with a telescope constructed from Crown and Flint not only the aberration by chromatic dispersion is compensated, but also that from the spherical glass surfaces, the effect of an achromatic telescope, compared to ...
... used as a meridian instrument. Since almost all light is passed through the glass, and with a telescope constructed from Crown and Flint not only the aberration by chromatic dispersion is compensated, but also that from the spherical glass surfaces, the effect of an achromatic telescope, compared to ...
Lecture #1 Basic Concepts and Principles of Adaptive Optics
... This approach is completely geometric in nature and so has no dependence on the coherence of the sensed optical beam. The incoming wavefront is broken into an array of spatial samples, called subapertures of the primary aperture, by a two dimensional array of lenslets. The subaperture sampled by eac ...
... This approach is completely geometric in nature and so has no dependence on the coherence of the sensed optical beam. The incoming wavefront is broken into an array of spatial samples, called subapertures of the primary aperture, by a two dimensional array of lenslets. The subaperture sampled by eac ...
Galileo galilei
... experimenting with balls, lever, and other objects while he tried to describe how they moved with mathematic equation. That makes him an idea to create an invention called Hydrostatics Balance. ...
... experimenting with balls, lever, and other objects while he tried to describe how they moved with mathematic equation. That makes him an idea to create an invention called Hydrostatics Balance. ...
System Level # Requirements Document
... identified as the highest-priority ground-based facility in the 2001 National Academy of Sciences report “Astronomy and Astrophysics in the New Millennium” (also known as the 2001 “Decadal Survey”). Responding to the Decadal Survey report, TMT is a 30-meter aperture facility with broad capabilities ...
... identified as the highest-priority ground-based facility in the 2001 National Academy of Sciences report “Astronomy and Astrophysics in the New Millennium” (also known as the 2001 “Decadal Survey”). Responding to the Decadal Survey report, TMT is a 30-meter aperture facility with broad capabilities ...
Spike: AI Scheduling for Hubble Space Telescope After 18 Months
... ties havebeendeleted, then a simplebest-first pass through Spiketreats scheduleconstructionas a constrainedoptithe unscheduled activities is used to fill them.This final mizationproblemanduses a heuristic repair-basedschedul- phaseof "scheduledeconflicting"has beenlittle studiedand ing search techni ...
... ties havebeendeleted, then a simplebest-first pass through Spiketreats scheduleconstructionas a constrainedoptithe unscheduled activities is used to fill them.This final mizationproblemanduses a heuristic repair-basedschedul- phaseof "scheduledeconflicting"has beenlittle studiedand ing search techni ...
PDF only - at www.arxiv.org.
... In 2015 the Associated Universities for Research in Astronomy (AURA) published a new vision for the 2030s entitled “From Cosmic Birth to Living Earths: The Future of UVOIR Space Astronomy”. The report caps a two-year AURA-chartered study of how the ambitious goals of exoplanet and cosmic origins sci ...
... In 2015 the Associated Universities for Research in Astronomy (AURA) published a new vision for the 2030s entitled “From Cosmic Birth to Living Earths: The Future of UVOIR Space Astronomy”. The report caps a two-year AURA-chartered study of how the ambitious goals of exoplanet and cosmic origins sci ...
... optics, the instrument and the AOF. The following sections provide the simulated performance, a description of the design of the module, and some management aspects of the project and schedule. 1.1 Ground layer adaptive optics Ground layer adaptive optics (GLAO) relies on the correction of the lowes ...
497 Autostar Manual for DS-2090AT-TC and DS-2102AT-TC
... Daylight Savings Time: The next screen requests the status of Daylight Savings Time. Press one of the Scroll keys to toggle between the YES/NO settings. When the desired setting displays, press ENTER. Set Your Location or Zip Code: The Location screen displays. This screen asks you if you wish to ch ...
... Daylight Savings Time: The next screen requests the status of Daylight Savings Time. Press one of the Scroll keys to toggle between the YES/NO settings. When the desired setting displays, press ENTER. Set Your Location or Zip Code: The Location screen displays. This screen asks you if you wish to ch ...
ALTERNATIVE DESIGNS FOR SPACE X
... less if compared with electroformed nickel layers. The glass foils may be used either as flats, or alternatively may be shaped or thermally slumped to achieve the required geometry [19]. The thermal forming of glass is not a new technology since it has been used in various regions of glass industry ...
... less if compared with electroformed nickel layers. The glass foils may be used either as flats, or alternatively may be shaped or thermally slumped to achieve the required geometry [19]. The thermal forming of glass is not a new technology since it has been used in various regions of glass industry ...
Simbol-X: x-ray baffle for stray–light reduction. - IASF Palermo
... length: the shorter is the focal length the larger are the mirror slopes. This determines, as a consequence, a strong limitation of the available collecting area at high energies for optics with usual focal lengths (< 10 m). Larger focal lengths are therefore mandatory in order to focus harder X-ray ...
... length: the shorter is the focal length the larger are the mirror slopes. This determines, as a consequence, a strong limitation of the available collecting area at high energies for optics with usual focal lengths (< 10 m). Larger focal lengths are therefore mandatory in order to focus harder X-ray ...
siamois
... - 7 bright targets, type: F, G, K class: IV & V - many red giants; d Scuti (v sin i < 20 km/s) Scientific program for more than 6 winterings Program complementary to CoRoT Granada:16 - 18/04/ 08 ...
... - 7 bright targets, type: F, G, K class: IV & V - many red giants; d Scuti (v sin i < 20 km/s) Scientific program for more than 6 winterings Program complementary to CoRoT Granada:16 - 18/04/ 08 ...
Problem Statement
... The error in the primary mirror went undiscovered. This is primarily due to the fact that both NASA and Perkin Elmer relied solely on the RNC for measurements. They had complete trust in the RNC to properly and accurately direct the grinding process. This was because they supposedly “certified” the ...
... The error in the primary mirror went undiscovered. This is primarily due to the fact that both NASA and Perkin Elmer relied solely on the RNC for measurements. They had complete trust in the RNC to properly and accurately direct the grinding process. This was because they supposedly “certified” the ...
SOFIA Engineering Meeting 12-May-2011
... – Need to have at least order-of-magnitude improvement over GREAT without sacrificingg frequency q y agility g y • Since we can’t yet get this improvement in sensitivity, get it in mapping speed with more pixels ...
... – Need to have at least order-of-magnitude improvement over GREAT without sacrificingg frequency q y agility g y • Since we can’t yet get this improvement in sensitivity, get it in mapping speed with more pixels ...
TECHNICAL REPORT
... MIRI transiting planet observations will focus on measuring the planet’s thermal emission by observing the dip in the mid-infrared light curve as the planet passes behind its host star. Extra-solar giant planets typically emit ~1% of the mid-infrared emission measured from the aggregate system; ther ...
... MIRI transiting planet observations will focus on measuring the planet’s thermal emission by observing the dip in the mid-infrared light curve as the planet passes behind its host star. Extra-solar giant planets typically emit ~1% of the mid-infrared emission measured from the aggregate system; ther ...
Performance of the Hobby-Eberly Telescope and facility instruments
... carefully controlled engineering conditions would vindicate the quality of the corrector figure and alignment. Tip and tilt errors of the corrector with respect to the primary mirror result in astigmatic images, as revealed by the Hartmann mask imaging. With the HET tracking, the tip and tilt of the ...
... carefully controlled engineering conditions would vindicate the quality of the corrector figure and alignment. Tip and tilt errors of the corrector with respect to the primary mirror result in astigmatic images, as revealed by the Hartmann mask imaging. With the HET tracking, the tip and tilt of the ...
Natural Regions Near the Collinear Libration Points Ideal for Space
... mission for the two phases of the mission scenario [8]. They compare different control methods for satellite imaging arrays in multi-body systems such as optimal nonlinear control, geometric control methods, a linear quadratic regulator and input state feedback linearization. Kolemen and Kasdin focu ...
... mission for the two phases of the mission scenario [8]. They compare different control methods for satellite imaging arrays in multi-body systems such as optimal nonlinear control, geometric control methods, a linear quadratic regulator and input state feedback linearization. Kolemen and Kasdin focu ...
The following is a supplemental addendum to the included
... In order for the telescope to accurately point to objects in the sky, it must first be aligned with known positions (stars) in the sky. With this information, the telescope can create a model of the sky, which it uses to locate any object with known coordinates. There are many ways to align your tel ...
... In order for the telescope to accurately point to objects in the sky, it must first be aligned with known positions (stars) in the sky. With this information, the telescope can create a model of the sky, which it uses to locate any object with known coordinates. There are many ways to align your tel ...
GM-8 manual-05.cdr
... The mount can be moved ± 8.5° in azimuth using these knobs. Keep in mind that adjusting the mount is done during the polar alignment process only. Once polar aligned, the mount must NOT be moved. Pointing the telescope is done by moving the mount in right ascension and declination, as described earl ...
... The mount can be moved ± 8.5° in azimuth using these knobs. Keep in mind that adjusting the mount is done during the polar alignment process only. Once polar aligned, the mount must NOT be moved. Pointing the telescope is done by moving the mount in right ascension and declination, as described earl ...
Full paper - The Institute of Mathematical Sciences
... medium energy resolution spectral studies and localization of Transients in soft and hard X-ray bands. • A Scanning Sky X-ray Monitor to detect and monitor Transients and known objects. • High time resolution (10 µs ) and high count rate capability ( 40 k Counts with PHA and 60 k Counts without PHA ...
... medium energy resolution spectral studies and localization of Transients in soft and hard X-ray bands. • A Scanning Sky X-ray Monitor to detect and monitor Transients and known objects. • High time resolution (10 µs ) and high count rate capability ( 40 k Counts with PHA and 60 k Counts without PHA ...
AstroMaster Series Telescopes
... Setting up the Tripod ................................................................................................................................6 Attaching the Equatorial Mount ...............................................................................................................7 Inst ...
... Setting up the Tripod ................................................................................................................................6 Attaching the Equatorial Mount ...............................................................................................................7 Inst ...
WAVEFRONT SENSOR FOR THE GAIA MISSION
... velocity measurements for about one billion stars in our Galaxy and throughout the local group. Each of its target stars will be monitored about 100 times over 5 year, precisely charting their distances, movements and changes in brightness. It is expected to discover hundreds of thousands of new cel ...
... velocity measurements for about one billion stars in our Galaxy and throughout the local group. Each of its target stars will be monitored about 100 times over 5 year, precisely charting their distances, movements and changes in brightness. It is expected to discover hundreds of thousands of new cel ...
how to set out an angle with the theo020 theodolite
... Turn the horizontal alignment knob until the vertical crosshair is lined up with B. 15 Unlock the vertical clamp and rotate the telescope until the horizontal crosshair is near B. 16 Lock the vertical clamp 17 Turn the vertical alignment knob until the horizontal crosshair is exactly on B 18 Release ...
... Turn the horizontal alignment knob until the vertical crosshair is lined up with B. 15 Unlock the vertical clamp and rotate the telescope until the horizontal crosshair is near B. 16 Lock the vertical clamp 17 Turn the vertical alignment knob until the horizontal crosshair is exactly on B 18 Release ...
Allen Telescope Array
The Allen Telescope Array (ATA), formerly known as the One Hectare Telescope (1hT) is a radio telescope array dedicated to astronomical observations and a simultaneous Search for Extraterrestrial Intelligence (SETI). The array is situated at the Hat Creek Radio Observatory, 290 miles (470 km) northeast of San Francisco, California.Originally developed as a joint effort between the SETI Institute and the Radio Astronomy Laboratory (RAL) at the University of California, Berkeley (UC Berkley) with funds obtained from an initial US$11.5 million donation by the Paul G. Allen Family Foundation, the project completed the first phase of construction and become operational on 11 October 2007 with 42 antennas (ATA-42), after Paul Allen (co-founder of Microsoft) pledged an additional $13.5 million to support the construction of the first and second phases.Though overall Allen has contributed more than $30 million to the project, the project has not succeeded in building the 350 six metre (19.7 feet) dishes originally conceived, and suffered an operational hiatus due to funding shortfalls between April and August 2011. Subsequently, UC Berkeley exited the project, completing divestment in April 2012. The facility is now managed by SRI International (formerly Stanford Research Institute), an independent, nonprofit research institute.In August 2014 the installation was threatened by a forest fire in the area and was briefly forced to shut down, but ultimately emerged largely unscathed.