Laser guide star adaptive optics at the Keck Observatory
... Hartman, David Le Mignant, Christopher R. Neyman, Paul J. Stomski, Jr., and Douglas Summers W.M. Keck Observatory SPIE Astronomical Telescopes and Instrumentation Conference 23 August 2002, Waikoloa, HI ...
... Hartman, David Le Mignant, Christopher R. Neyman, Paul J. Stomski, Jr., and Douglas Summers W.M. Keck Observatory SPIE Astronomical Telescopes and Instrumentation Conference 23 August 2002, Waikoloa, HI ...
B2_TC_OGSE_MGSE
... internal and external calibration sources Provision of FIR background based on Herschel telescope temperature of 70K-90K 3 cryogenic mechanisms for different internal and external calibration source selection ...
... internal and external calibration sources Provision of FIR background based on Herschel telescope temperature of 70K-90K 3 cryogenic mechanisms for different internal and external calibration source selection ...
Measuring Ozone Using Differential absorption
... Sending balloon-borne instruments through the atmosphere is helpful, but not on the continuous scale that is necessary to fully characterize tropospheric ozone Tropospheric ozone is created by complex (non-linear) interactions with NOx and Volatile Organic Compounds (VOC) in the presence of near ...
... Sending balloon-borne instruments through the atmosphere is helpful, but not on the continuous scale that is necessary to fully characterize tropospheric ozone Tropospheric ozone is created by complex (non-linear) interactions with NOx and Volatile Organic Compounds (VOC) in the presence of near ...
Solar Physics with LOFAR
... limitation, e.g. it is shown below that this does not limit solar applications. All sky surveys that need large fields of view will mainly use the central core of LOFAR that is not subject to station beam limitations. • Since the antenna receivers are connected to either the low or the high band ant ...
... limitation, e.g. it is shown below that this does not limit solar applications. All sky surveys that need large fields of view will mainly use the central core of LOFAR that is not subject to station beam limitations. • Since the antenna receivers are connected to either the low or the high band ant ...
Principles, Limitations and Performance of Multi
... to an inversion process, and usual constraints apply, like for instance the number of GSs has to be larger than the number of layers to be reconstructed, to insure stability. Tomography as such was rst conceived as an open loop measurement scheme. One of the problem associated with open-loop tomogr ...
... to an inversion process, and usual constraints apply, like for instance the number of GSs has to be larger than the number of layers to be reconstructed, to insure stability. Tomography as such was rst conceived as an open loop measurement scheme. One of the problem associated with open-loop tomogr ...
nexgUide User`s ManUal
... multiple stars in the NexGuide’s field of view (FOV), the noise menu can also be used to filter out dimmer stars and reduce the chances of misidentifying the guide star during auto-guiding. Higher value of the noise setting leads to a stronger filter effect, but it may affect NexGuide’s ability to d ...
... multiple stars in the NexGuide’s field of view (FOV), the noise menu can also be used to filter out dimmer stars and reduce the chances of misidentifying the guide star during auto-guiding. Higher value of the noise setting leads to a stronger filter effect, but it may affect NexGuide’s ability to d ...
Light and Telescopes Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015
... B. Largest diameter secondary mirror C. eyepiece with the largest magnification D. tube with the longest length Astronomy 1 - Elementary Astronomy ...
... B. Largest diameter secondary mirror C. eyepiece with the largest magnification D. tube with the longest length Astronomy 1 - Elementary Astronomy ...
instituto de astrofísica de canarias
... FPGAs helped conventional processors doing interfacing, glue logic,... FPGAs have grown to a level capable of accepting a microprocessor inside... Traditional approach is to manufacture big quantities of a general purpose microelectronics hardware, and write a (specific) program to solve the s ...
... FPGAs helped conventional processors doing interfacing, glue logic,... FPGAs have grown to a level capable of accepting a microprocessor inside... Traditional approach is to manufacture big quantities of a general purpose microelectronics hardware, and write a (specific) program to solve the s ...
Night-time image quality at Roque de los Muchachos Observatory
... G ≈ 3. The twin images of a star are captured by the intensified camera with a exposure time ∆T ≈ 10 ms, short enough to freeze the wave-front. The video signal is then digitized. Seeing is referred to zenith taking into account the appropriate air-mass correction, the zenithal angle being small (≤ ...
... G ≈ 3. The twin images of a star are captured by the intensified camera with a exposure time ∆T ≈ 10 ms, short enough to freeze the wave-front. The video signal is then digitized. Seeing is referred to zenith taking into account the appropriate air-mass correction, the zenithal angle being small (≤ ...
george ellery hale - National Academy of Sciences
... of State and Washington Streets which was destroyed in the great fire of 1871. During its reconstruction the possibilities of hydraulic elevators attracted him greatly, and in partnership with his brother George W. Hale he established the firm of William E. Hale and Company to manufacture and instal ...
... of State and Washington Streets which was destroyed in the great fire of 1871. During its reconstruction the possibilities of hydraulic elevators attracted him greatly, and in partnership with his brother George W. Hale he established the firm of William E. Hale and Company to manufacture and instal ...
A Synopsis of the Paper, “Optical Performance of the James Webb
... The James Webb Space Telescope (JWST) will be used for gathering science data of astronomical objects with a spectral range of 0.6 to 27 μm. JWST is designed to have superb sensitivity with an aperture area of 25 m^2. As can be imagined, maintaining image quality with such a large aperture calls for ...
... The James Webb Space Telescope (JWST) will be used for gathering science data of astronomical objects with a spectral range of 0.6 to 27 μm. JWST is designed to have superb sensitivity with an aperture area of 25 m^2. As can be imagined, maintaining image quality with such a large aperture calls for ...
Reflecting `Popular Culture`: The Introduction, Diffusion, and
... at their disposal could eventually obtain the necessary results. The relatively few professional instrument-makers active at the beginning of the eighteenth century could not simply permit themselves to undertake such time-consuming activities.15 In 1723, the first ‘Hadleyan’ reflecting telescope wa ...
... at their disposal could eventually obtain the necessary results. The relatively few professional instrument-makers active at the beginning of the eighteenth century could not simply permit themselves to undertake such time-consuming activities.15 In 1723, the first ‘Hadleyan’ reflecting telescope wa ...
ctioPI
... dome flats should be done. You should take 17 bias frames, 11 V dome flats, 11 R dome flats, and 11 I dome flats. This makes a total of 50 calibration frames. Before taking any type of calibration frame, it is best to take a test frame to see if everything is working as expected. Type "imstat f*" to ...
... dome flats should be done. You should take 17 bias frames, 11 V dome flats, 11 R dome flats, and 11 I dome flats. This makes a total of 50 calibration frames. Before taking any type of calibration frame, it is best to take a test frame to see if everything is working as expected. Type "imstat f*" to ...
AAS205_poster - FUSE - Johns Hopkins University
... imagery from the Hubble Space Telescope. The spatial distribution of NIR emissions are consistent with that seen in optical and hard X-ray, indicating an origin in the primary shock wave as it interacts with a circumstellar and/or interstellar medium. Left: A composite view of Kepler’s SNR combining ...
... imagery from the Hubble Space Telescope. The spatial distribution of NIR emissions are consistent with that seen in optical and hard X-ray, indicating an origin in the primary shock wave as it interacts with a circumstellar and/or interstellar medium. Left: A composite view of Kepler’s SNR combining ...
METIS Visible light relay optics concept and design
... function of the incidence angle, the red dots for MgF2 and Ag. The lines are the fits relative to the two series, the relation is quadratic. To improve VL path polarimetric performances it is needed either change coatings or change incidence angle. In Figure 5 is plotted the index Pn for some angles ...
... function of the incidence angle, the red dots for MgF2 and Ag. The lines are the fits relative to the two series, the relation is quadratic. To improve VL path polarimetric performances it is needed either change coatings or change incidence angle. In Figure 5 is plotted the index Pn for some angles ...
The Stellar Content of Obscured Galactic Giant H II Regions
... B stars in M17, a relatively nearby but partially obscured giant HII region. In addition, the central 50 pc of the Milky Way have been intensely studied with the application of near infrared spectroscopy. It has been revealed that the stellar cluster in the central parsec, as well as two other nearb ...
... B stars in M17, a relatively nearby but partially obscured giant HII region. In addition, the central 50 pc of the Milky Way have been intensely studied with the application of near infrared spectroscopy. It has been revealed that the stellar cluster in the central parsec, as well as two other nearb ...
GMT Enclosure Wind and Thermal Study
... CPP, 1415 Blue Spruce Drive, Fort Collins, CO 80524, USA ABSTRACT The GMT (Giant Magellan Telescope) is a large ground-based telescope for astronomical research at optical and infrared wavelengths. The telescope is enclosed inside an Enclosure that rotates to follow the tracking of the telescope. Th ...
... CPP, 1415 Blue Spruce Drive, Fort Collins, CO 80524, USA ABSTRACT The GMT (Giant Magellan Telescope) is a large ground-based telescope for astronomical research at optical and infrared wavelengths. The telescope is enclosed inside an Enclosure that rotates to follow the tracking of the telescope. Th ...
Pupil Mapping (aka PIAA)
... Concentric rings, 4λ/D Concentric rings, 8λ/D Pupil mapping, 2λ/D Pupil mapping, 4λ/D Pupil mapping, 8λ/D ...
... Concentric rings, 4λ/D Concentric rings, 8λ/D Pupil mapping, 2λ/D Pupil mapping, 4λ/D Pupil mapping, 8λ/D ...
Overview and first year observation of CALET Gamma ray Burst
... synchrotron radiation. The spectra of the prompt emissions show a broad energy distribution from keV to MeV range. These spectra are well represented by a smoothly jointed broken power-law, namely Band function (Band et al. 1993 ). To study its wide band nature, spectral observations of prompt emiss ...
... synchrotron radiation. The spectra of the prompt emissions show a broad energy distribution from keV to MeV range. These spectra are well represented by a smoothly jointed broken power-law, namely Band function (Band et al. 1993 ). To study its wide band nature, spectral observations of prompt emiss ...
Minutes SSWG_10
... Draft: 28 April 2004 The tenth meeting of the SSWG took place on Sunday 26th October 2003, in the SALT Boardroom, Cape Town. Gerald Cecil kindly volunteered to take the minutes. Presentations given at the meeting can be downloaded from the SSWG website (www.salt.ac.za/content/science/restrict/restri ...
... Draft: 28 April 2004 The tenth meeting of the SSWG took place on Sunday 26th October 2003, in the SALT Boardroom, Cape Town. Gerald Cecil kindly volunteered to take the minutes. Presentations given at the meeting can be downloaded from the SSWG website (www.salt.ac.za/content/science/restrict/restri ...