(NWNH) recommends WFIRST
... WFIRST will carry out a powerful extrasolar planet search by monitoring a large sample of stars in the central bulge of the Milky Way for small deviations in brightness due to microlensing by intervening solar systems. This census, combined with that made by the Kepler mission, will determine how ...
... WFIRST will carry out a powerful extrasolar planet search by monitoring a large sample of stars in the central bulge of the Milky Way for small deviations in brightness due to microlensing by intervening solar systems. This census, combined with that made by the Kepler mission, will determine how ...
An optical/UV space coronagraph concept for the terrestrial planet finder
... the habitable zone. This requires an optical system capable of extremely high contrast imaging (roughly 10−10 in the visible) within several Airy rings. The traditional coronagraph approach to this utilizes an image plane field stop (usually Gaussian) followed by a Lyot stop at a reimaged pupil. Kuc ...
... the habitable zone. This requires an optical system capable of extremely high contrast imaging (roughly 10−10 in the visible) within several Airy rings. The traditional coronagraph approach to this utilizes an image plane field stop (usually Gaussian) followed by a Lyot stop at a reimaged pupil. Kuc ...
Scientific Equipment
... Used to observe small objects with different lenses. Objects are placed on a microscope slide. ...
... Used to observe small objects with different lenses. Objects are placed on a microscope slide. ...
L.Barsotti: Virgo commissioning progress
... further improvement of the locking stability ITF conditions more repeatable * new alignment procedure tested and implemented ...
... further improvement of the locking stability ITF conditions more repeatable * new alignment procedure tested and implemented ...
Presentation Title - Caltech Optical Observatories
... These additions will not vignette any part of the stimulus beam nor will they block the off-axis relay mounts. The second fold mirror will be permanently fixed to the magnetic mount’s twin for quick and easy assembly. ...
... These additions will not vignette any part of the stimulus beam nor will they block the off-axis relay mounts. The second fold mirror will be permanently fixed to the magnetic mount’s twin for quick and easy assembly. ...
The Michelson Interferometer The Michelson
... finite width, and the light is diffracted through it in a single slit diffraction pattern. It is these patterns that should be superposed to give the final intensity. Usually, the width of each of the slits is quite a bit less than the separation of their centers. You can get the result by drawing a ...
... finite width, and the light is diffracted through it in a single slit diffraction pattern. It is these patterns that should be superposed to give the final intensity. Usually, the width of each of the slits is quite a bit less than the separation of their centers. You can get the result by drawing a ...
Observing Double Stars
... interferometry, both of which can use electron-multiplying CCD cameras to allow short (30 ms or less) exposures that are read out at high speed with very low noise. Analysis of thousands of high speed exposures allows normal seeing limitations to be overcome so very close doubles can be accurately m ...
... interferometry, both of which can use electron-multiplying CCD cameras to allow short (30 ms or less) exposures that are read out at high speed with very low noise. Analysis of thousands of high speed exposures allows normal seeing limitations to be overcome so very close doubles can be accurately m ...
sporadic solar radio emission at decameter wavelengths
... The broadband T-shaped radio telescope UTR-2 consists of two antenna arrays: “NorthSouth” (1800 m along the North-South direction) and “East-West” (900 m along the East-West direction). The antenna “North-South” is in its turn divided in two separate arrays each of which includes 720 broadband dipol ...
... The broadband T-shaped radio telescope UTR-2 consists of two antenna arrays: “NorthSouth” (1800 m along the North-South direction) and “East-West” (900 m along the East-West direction). The antenna “North-South” is in its turn divided in two separate arrays each of which includes 720 broadband dipol ...
X-Ray Telescopes
... these types of studies is readily undertaken with nonimaging instruments. Other imaging approaches employing such devices as modulation collimators or scanned, tightly collimated detectors provide much poorer resolution (∼1 arcmin.) than that available with current x-ray telescopes and suffer from i ...
... these types of studies is readily undertaken with nonimaging instruments. Other imaging approaches employing such devices as modulation collimators or scanned, tightly collimated detectors provide much poorer resolution (∼1 arcmin.) than that available with current x-ray telescopes and suffer from i ...
Slide 1
... accessible eyepiece locations in large aperture scopes without requiring the user to tolerate a double FOV or a large central obstruction. A new all-spherical relay Cassegrain design is presented that substantially improves upon the imaging performance of previously published, similar designs. ...
... accessible eyepiece locations in large aperture scopes without requiring the user to tolerate a double FOV or a large central obstruction. A new all-spherical relay Cassegrain design is presented that substantially improves upon the imaging performance of previously published, similar designs. ...
Solar Physics, Space Weather, and Wide-field X-ray
... ● GOES-N is the first of the next generation weather satellites that will include a Solar X-ray Imager (SXI) instrument to provide full solar disc images of the sun at X-ray wavelengths. ● The first model was incorporated into the GOES-N satellite and scheduled for launch in May 2005 (launch was scr ...
... ● GOES-N is the first of the next generation weather satellites that will include a Solar X-ray Imager (SXI) instrument to provide full solar disc images of the sun at X-ray wavelengths. ● The first model was incorporated into the GOES-N satellite and scheduled for launch in May 2005 (launch was scr ...
Planets Around M-dwarfs – Astrometric Detection and Orbit
... at FGK stars. It follows that there are many discoveries to be made by extending the search to hitherto little-covered stellar masses – in particular M-dwarfs, where low stellar mass improves detection sensitivity for many techniques. The Exoplanet Task Force has identified the search for planets ar ...
... at FGK stars. It follows that there are many discoveries to be made by extending the search to hitherto little-covered stellar masses – in particular M-dwarfs, where low stellar mass improves detection sensitivity for many techniques. The Exoplanet Task Force has identified the search for planets ar ...
solartele
... an erect image telescope (McColly), although here Schyrle de Rheita is a likely predecessor. For his early solar observations, he used blue or green glass filters, observing at sunrise and sunset or through clouds, and quickly scanning the sun from the edge to the center. (Letter of 12 Nov. 1611, Sh ...
... an erect image telescope (McColly), although here Schyrle de Rheita is a likely predecessor. For his early solar observations, he used blue or green glass filters, observing at sunrise and sunset or through clouds, and quickly scanning the sun from the edge to the center. (Letter of 12 Nov. 1611, Sh ...
Differential measurement of atmospheric
... When carrying out the trajectory measurement in shooting ranges, the farther the target is away from the observer, the lower angle of elevation it becomes, and even a negative angle of elevation will appear, the correction error of atmospheric refraction has become one of the main errors for the mea ...
... When carrying out the trajectory measurement in shooting ranges, the farther the target is away from the observer, the lower angle of elevation it becomes, and even a negative angle of elevation will appear, the correction error of atmospheric refraction has become one of the main errors for the mea ...
to access chapter 16
... distant objects in space. Radio telescopes often consist of multiple dishes arranged in a group, or array. The radio signals detected by the dishes in an array can be added together. An array of dishes is like one giant dish that is as large as the space covered by all the dishes in the array. ...
... distant objects in space. Radio telescopes often consist of multiple dishes arranged in a group, or array. The radio signals detected by the dishes in an array can be added together. An array of dishes is like one giant dish that is as large as the space covered by all the dishes in the array. ...
Comparison of the expected and observed supernova remnant
... To estimate the sensitivity of Fermi/LAT, we used the Fermi/LAT Second source catalogue [11], which lists all the sources detected with Fermi/LAT with more than 4σ significance during the first two years of its observations. Our analysis is focused on the Galactic plane, where all the SNRs are situa ...
... To estimate the sensitivity of Fermi/LAT, we used the Fermi/LAT Second source catalogue [11], which lists all the sources detected with Fermi/LAT with more than 4σ significance during the first two years of its observations. Our analysis is focused on the Galactic plane, where all the SNRs are situa ...
AIP Conference Paper including MPIfR 19 Channel
... The MAMBO bolometers are of composite type, which allows the separate optimisation of critical bolometer parameters, like thermal conductivity, heat capacity and absorptivity. Freestanding membranes of Silicon Nitride provide low thermal conductivity for the bolometers by virtue of their amorphous s ...
... The MAMBO bolometers are of composite type, which allows the separate optimisation of critical bolometer parameters, like thermal conductivity, heat capacity and absorptivity. Freestanding membranes of Silicon Nitride provide low thermal conductivity for the bolometers by virtue of their amorphous s ...
The E-ELT instrument roadmap: a status report
... MAORY (Diolaiti et al.8) uses the telescope adaptive M4 and two post-focal deformable mirrors (conjugated to 12.7km and 4km) to correct a field of view of up to 2arcminutes. The predicted Strehl ratio is about 0.5 at λ = 2.16 µm, averaged over the MICADO FoV, over about 50% of the sky at the Galacti ...
... MAORY (Diolaiti et al.8) uses the telescope adaptive M4 and two post-focal deformable mirrors (conjugated to 12.7km and 4km) to correct a field of view of up to 2arcminutes. The predicted Strehl ratio is about 0.5 at λ = 2.16 µm, averaged over the MICADO FoV, over about 50% of the sky at the Galacti ...
New results on a Cn2 profiler for GeMS
... already complies with several WFSs and several guide sources, the SLODAR implementation was straightforward. Three main modifications to the classical SLODAR approach are however required. First the SLODAR is usually implemented with natural stars while the WFS of GeMS observe LGS at finite distance ...
... already complies with several WFSs and several guide sources, the SLODAR implementation was straightforward. Three main modifications to the classical SLODAR approach are however required. First the SLODAR is usually implemented with natural stars while the WFS of GeMS observe LGS at finite distance ...
슬라이드 1
... only their coordinate and size were known. The observation was performed at maidanak observatory, and we find about 420 stars of cluster's member in V filter photometry. Through the radial profile, we determine the cluster's angular size extends out to R = 1.6arcmin. The color magnitude diagram of t ...
... only their coordinate and size were known. The observation was performed at maidanak observatory, and we find about 420 stars of cluster's member in V filter photometry. Through the radial profile, we determine the cluster's angular size extends out to R = 1.6arcmin. The color magnitude diagram of t ...
THE BASICS OF RADAR ASTRONOMY
... rapidly during World War II. After the war, it improved tremendously and was soon being used for many different purposes. Planetary radar operates by sending and receiving a narrow beam of electromagnetic energy either in the microwave or radio range into space from an antenna. The object reflects t ...
... rapidly during World War II. After the war, it improved tremendously and was soon being used for many different purposes. Planetary radar operates by sending and receiving a narrow beam of electromagnetic energy either in the microwave or radio range into space from an antenna. The object reflects t ...