Document
... • Allowing time and money for recovery from problems • Establish key dates for decisions, early Stick to them ...
... • Allowing time and money for recovery from problems • Establish key dates for decisions, early Stick to them ...
Deformable Mirrors Lecture 8
... • Large DMs have been demonstrated (continuous face sheet, adaptive secondary) for ~ 1000 - 3000 actuators • MEMs DMs hold promise of lower cost, more actuators • Deformable secondary DMs look very promising – No additional relays needed (no off-axis parabolas), fewer optical ...
... • Large DMs have been demonstrated (continuous face sheet, adaptive secondary) for ~ 1000 - 3000 actuators • MEMs DMs hold promise of lower cost, more actuators • Deformable secondary DMs look very promising – No additional relays needed (no off-axis parabolas), fewer optical ...
as PDF - Minnesota Academy of Science
... preceding which it follows more closely. By an increase of the number of ripples, and also by a decrease of distance between them, one can estimate the rate of motion of the object producing them, for, the decrease of distance between the ripples is just the distance the object travels in the time o ...
... preceding which it follows more closely. By an increase of the number of ripples, and also by a decrease of distance between them, one can estimate the rate of motion of the object producing them, for, the decrease of distance between the ripples is just the distance the object travels in the time o ...
Step-by-Step Instructions for Educators
... We are excited that you are interested in promoting the science of astronomy in your school and/or library programs. The SunSpotter Solar Telescope that you have just checked out is both educational and a lot of fun to use. Most telescopes allow only one person at a time to view an image. Th ...
... We are excited that you are interested in promoting the science of astronomy in your school and/or library programs. The SunSpotter Solar Telescope that you have just checked out is both educational and a lot of fun to use. Most telescopes allow only one person at a time to view an image. Th ...
White Paper on the Revival of Stellar Intensity Interferometry E. Ribak S. LeBohec
... path lengths to each receiver are much less stringent than in amplitude interferometry (AI). In particular, SII eliminates the need for adaptive optics and optical delay lines and is essentially insensitive to atmospheric turbulence and seeing conditions. As a consequence, baselines can virtually be ...
... path lengths to each receiver are much less stringent than in amplitude interferometry (AI). In particular, SII eliminates the need for adaptive optics and optical delay lines and is essentially insensitive to atmospheric turbulence and seeing conditions. As a consequence, baselines can virtually be ...
Galileo Theory Choice and Theory Change
... “Pluralism of theories and metaphysical views is not only important for methodology, it is also an essential part of a humanitarian outlook.” “There may, of course, come a time when it will be necessary to give reason a temporary advantage and when it will be wise to defend its rules to the exclusio ...
... “Pluralism of theories and metaphysical views is not only important for methodology, it is also an essential part of a humanitarian outlook.” “There may, of course, come a time when it will be necessary to give reason a temporary advantage and when it will be wise to defend its rules to the exclusio ...
laser safety toolbox talk handout
... Blink Reflex will protect workers from visible lasers unless a telescope or microscope is used. Exposure to beam may cause temporary “flash blindness.” Laser pointers typically fall into this category. Powerful laser no more than 500 mW continuous wave power. Direct beam and beam reflected from mirr ...
... Blink Reflex will protect workers from visible lasers unless a telescope or microscope is used. Exposure to beam may cause temporary “flash blindness.” Laser pointers typically fall into this category. Powerful laser no more than 500 mW continuous wave power. Direct beam and beam reflected from mirr ...
669 - Caltech Optical Observatories
... can be very fast (very likely < 2 sec), and the steering mirror could be used for fine guidance/centering on a slit, a spaxel, a coronagraphic spot or any location on a detector. This steering mechanism could be used to compensate for differential atmospheric refraction, differential tracking, or an ...
... can be very fast (very likely < 2 sec), and the steering mirror could be used for fine guidance/centering on a slit, a spaxel, a coronagraphic spot or any location on a detector. This steering mechanism could be used to compensate for differential atmospheric refraction, differential tracking, or an ...
The Optical Gravitational Lensing Experiment. Photometry of the
... http://darkstar.astro.washington.edu. Two observations were collected by the MACHO/GMAN group on June 22. The first one was made about 0.0308 day after the OGLE observation and is about 0.25 mag fainter than the next one taken another 0.0195 day later. Therefore we are convinced that the observed dr ...
... http://darkstar.astro.washington.edu. Two observations were collected by the MACHO/GMAN group on June 22. The first one was made about 0.0308 day after the OGLE observation and is about 0.25 mag fainter than the next one taken another 0.0195 day later. Therefore we are convinced that the observed dr ...
14CE303 - Bapatla Engineering College
... Classification of surveying based on instruments: Chain surveying is a type of survey in which the surveyor takes measurements in the field and then completes plot calculations and other processes in the office. Chain surveying is best used for smaller planes with few details. Compass surveying is a ...
... Classification of surveying based on instruments: Chain surveying is a type of survey in which the surveyor takes measurements in the field and then completes plot calculations and other processes in the office. Chain surveying is best used for smaller planes with few details. Compass surveying is a ...
COrE+ Optics options
... • Reimaging optics module can be included if required to place cold stop for planar pixels • Gaussian beam telescope configuration with 2 lenses is being investigated currently. • Paraxial lens options already added using ray tracing analysis. • Next step to add real lens – requires optimisation for ...
... • Reimaging optics module can be included if required to place cold stop for planar pixels • Gaussian beam telescope configuration with 2 lenses is being investigated currently. • Paraxial lens options already added using ray tracing analysis. • Next step to add real lens – requires optimisation for ...
Experience with the Hubble Space Telescope: Twenty Years
... Once the 256 nm of known spherical aberration are removed, remaining total system aberrations (OTA+SI) are observed between 25 and 70 nm rms, depending on the SI. The OTA is believed to contribute approximately 25 nm, 18 of which are in the form of mid-frequency “polishing” errors, and the remainder ...
... Once the 256 nm of known spherical aberration are removed, remaining total system aberrations (OTA+SI) are observed between 25 and 70 nm rms, depending on the SI. The OTA is believed to contribute approximately 25 nm, 18 of which are in the form of mid-frequency “polishing” errors, and the remainder ...
Diapositive 1
... - is the length of the projected baseline sufficient to resolve the structure? is the structure over-resolved? (*) (simulations with ASPRO) - is the angle of the projected baseline suitable to constrain the object morphology? (simulations with ASPRO) ...
... - is the length of the projected baseline sufficient to resolve the structure? is the structure over-resolved? (*) (simulations with ASPRO) - is the angle of the projected baseline suitable to constrain the object morphology? (simulations with ASPRO) ...
Cepheids in M100 - Indiana University Astronomy
... In astronomy, the "absolute magnitude" of a star is the apparent magnitude that star would have if it were at a distance of 10 parsecs (a parsec is 3.26 light years). Thus the difference between the absolute magnitude and the apparent magnitude is related to the distance. The relation can be written ...
... In astronomy, the "absolute magnitude" of a star is the apparent magnitude that star would have if it were at a distance of 10 parsecs (a parsec is 3.26 light years). Thus the difference between the absolute magnitude and the apparent magnitude is related to the distance. The relation can be written ...
EQUIPMENT
... Telescopes with excellent availability are open for at least part of >75% of nights. Telescopes with good availability are open for at least part of 50% 75% of nights. Telescopes with fair availability are open for at least part of 25% 50% of nights. Telescopes with poor availability are open fo ...
... Telescopes with excellent availability are open for at least part of >75% of nights. Telescopes with good availability are open for at least part of 50% 75% of nights. Telescopes with fair availability are open for at least part of 25% 50% of nights. Telescopes with poor availability are open fo ...
A detector telescope`s pitch angle sampling of
... plane, Z X aligned with the longitude φ, and so perpendicular the geomagnetic equator. The third rotation is along the new O Z axis in the clockwise sense through such an angle as to align the rotated Z X -plane with the satellite orbit. This angle is a function of both the satellite’s orbital incli ...
... plane, Z X aligned with the longitude φ, and so perpendicular the geomagnetic equator. The third rotation is along the new O Z axis in the clockwise sense through such an angle as to align the rotated Z X -plane with the satellite orbit. This angle is a function of both the satellite’s orbital incli ...
PARI Newsletter Spring
... earth from the heavens above. Obviously, for some reason or reasons, our atmosphere is transparent to visible light in exactly the wavelengths to which our eyes are sensitive. That is no coincidence. Our eyes evolved to take advantage of the type of energy that is available to us. It would do us no ...
... earth from the heavens above. Obviously, for some reason or reasons, our atmosphere is transparent to visible light in exactly the wavelengths to which our eyes are sensitive. That is no coincidence. Our eyes evolved to take advantage of the type of energy that is available to us. It would do us no ...
History - Astrophysical Research Consortium
... WSU and from the gathering of ideas from Kitt Peak and Greenbank was a welldeveloped concept for a lightweight, 2 m mirror only 6 cm thick with a support structure that would use tube structure members on an altazimuth mount with a servo control system driven by computer for precision pointing. The ...
... WSU and from the gathering of ideas from Kitt Peak and Greenbank was a welldeveloped concept for a lightweight, 2 m mirror only 6 cm thick with a support structure that would use tube structure members on an altazimuth mount with a servo control system driven by computer for precision pointing. The ...
Proceedings 22nd International Symposium on Space Terahertz
... Union, Japan, Russia, Chile and China attended. The local organizing committee would like to thank the conference manager Brian Duffy and his nd staff for making the 22 ISSTT an enjoyable and smooth event. Their many hours of hard work made the conference possible. All submitted manuscripts have bee ...
... Union, Japan, Russia, Chile and China attended. The local organizing committee would like to thank the conference manager Brian Duffy and his nd staff for making the 22 ISSTT an enjoyable and smooth event. Their many hours of hard work made the conference possible. All submitted manuscripts have bee ...
Annual report 2002 - Département d`Astrophysique, Géophysique et
... in preliminary reductions of time-series data from the Danish 1.54m telescope at La Silla revealed three new SX Phe candidates with very short periods. Non-adiabatic analysis of pulsating stars The study of the non-adiabatic character of stellar oscillations can give precise information about their ...
... in preliminary reductions of time-series data from the Danish 1.54m telescope at La Silla revealed three new SX Phe candidates with very short periods. Non-adiabatic analysis of pulsating stars The study of the non-adiabatic character of stellar oscillations can give precise information about their ...
Discovery of Cluster-Scale Lensed Quasars using the Subaru
... We are carrying out the Sloan Digital Sky Survey Quasar Lens Search （SQLS）. The main purposes of the SQLS are 1） constructing a large statistical sample of lensed quasars and 2） searching quasars lensed by clusters of galaxies, i.e., a new population of lensed quasars. So far we have succeeded in di ...
... We are carrying out the Sloan Digital Sky Survey Quasar Lens Search （SQLS）. The main purposes of the SQLS are 1） constructing a large statistical sample of lensed quasars and 2） searching quasars lensed by clusters of galaxies, i.e., a new population of lensed quasars. So far we have succeeded in di ...
Very Large Telescope Paranal Science Operations MIDI Template
... Interferograms are recorded in “Fourier” mode in a “fringe exposure”. In this mode, the length of each scan (linear OPD modulation over the time) is nominally 8×λ̄, where λ̄ corresponds to the central wavelength of the MIDI spectral window: around 10.3 µm. The interferogram results from the subtract ...
... Interferograms are recorded in “Fourier” mode in a “fringe exposure”. In this mode, the length of each scan (linear OPD modulation over the time) is nominally 8×λ̄, where λ̄ corresponds to the central wavelength of the MIDI spectral window: around 10.3 µm. The interferogram results from the subtract ...