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IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... In the communication world, satellite optical wireless communication (SOWC) is one of the major areas that remains to be comprehensively researched (1).Optical inter satellite links (ISL) provide an attractive alternate to microwave systems for both commercial and military applications. The advantag ...
... In the communication world, satellite optical wireless communication (SOWC) is one of the major areas that remains to be comprehensively researched (1).Optical inter satellite links (ISL) provide an attractive alternate to microwave systems for both commercial and military applications. The advantag ...
Physical Characterization Studies of Near
... again be in that same location) can otherwise be as much as decades long. At the first instant of discovery, however, all we know about these bodies is their rough orbits and absolute magnitudes. Since we need much more information to select a potential spacecraft target, efforts must be immediate t ...
... again be in that same location) can otherwise be as much as decades long. At the first instant of discovery, however, all we know about these bodies is their rough orbits and absolute magnitudes. Since we need much more information to select a potential spacecraft target, efforts must be immediate t ...
Telescope Service - LX200 Classic Telescopes
... clip assembly onto the wall of the base. Make sure the clip assembly is down far enough tat the wires from the resistors have clearance with the cover plate. o If the double sided tape won’t hold the clip mount in place apply a bead of Silicone Adhesive between the clip and the drive base wall. 4. G ...
... clip assembly onto the wall of the base. Make sure the clip assembly is down far enough tat the wires from the resistors have clearance with the cover plate. o If the double sided tape won’t hold the clip mount in place apply a bead of Silicone Adhesive between the clip and the drive base wall. 4. G ...
Coating Gemini Telescopes with Protected Silver
... of tarnish and lost reflectivity has been restored after both in-situ washes that it has undergone. The Gemini North and South primary mirrors have shown minimal tarnish as a result of minor contamination during the coating process. Tarnish on the primary mirrors manifests as small ~1 mm diameter ar ...
... of tarnish and lost reflectivity has been restored after both in-situ washes that it has undergone. The Gemini North and South primary mirrors have shown minimal tarnish as a result of minor contamination during the coating process. Tarnish on the primary mirrors manifests as small ~1 mm diameter ar ...
image degradations of an aerodynamically shaped optical window
... primary boresight errors occur, and window aberrations can be attributed primarily to astigmatism dependent on elevation angle. If the telescope pivot is moved off the window axis closer to the window, an additional aberration appears at nonzero azimuth viewing angles. This feature is apparent when ...
... primary boresight errors occur, and window aberrations can be attributed primarily to astigmatism dependent on elevation angle. If the telescope pivot is moved off the window axis closer to the window, an additional aberration appears at nonzero azimuth viewing angles. This feature is apparent when ...
Swanson User Manual - Von Braun Astronomical Society
... Focus the Stellacam (A)Using CdC, select a moderately bright star low in the southwest. (B)Left-click on it in CdC to select it, (C)Right click to bring up the context menu and select “GOTO current object”. (D)The scope will slew to the star. (E)If you don’t see the star in the StellaCam VirtualDub ...
... Focus the Stellacam (A)Using CdC, select a moderately bright star low in the southwest. (B)Left-click on it in CdC to select it, (C)Right click to bring up the context menu and select “GOTO current object”. (D)The scope will slew to the star. (E)If you don’t see the star in the StellaCam VirtualDub ...
2008-03 LAAS Bulletin I - Los Angeles Astronomical Society
... Canopus, Rigil Kentaurus (a Centauri A), Arcturus, Vega, Capella and Rigel. Much cooler than Sirius, Procyon is spectral class F5IV-V, where class F star temperatures range from 6,000 to 7,500 Kelvins, and the “IV-V” tells us it is either a subgiant or main sequence star. Its effective temperature o ...
... Canopus, Rigil Kentaurus (a Centauri A), Arcturus, Vega, Capella and Rigel. Much cooler than Sirius, Procyon is spectral class F5IV-V, where class F star temperatures range from 6,000 to 7,500 Kelvins, and the “IV-V” tells us it is either a subgiant or main sequence star. Its effective temperature o ...
LXO-Hardware
... Research joint funded by UK industry (E2V) and PPARC Application in this case was X-ray macromolecular crystallography 5.5 cm x 4.1 cm active area, 3.2M pixel, 27 µm, 2 MHz pixel readout, Device is 3-sides buttable ...
... Research joint funded by UK industry (E2V) and PPARC Application in this case was X-ray macromolecular crystallography 5.5 cm x 4.1 cm active area, 3.2M pixel, 27 µm, 2 MHz pixel readout, Device is 3-sides buttable ...
Instructions for the HALO Setting Circle/Leveling Base
... chosen star is to Polaris, the less it will move in your eyepiece, which will make calibrating the HALO easier and more accurate. Once you have Polaris (or your other reference star) centered in your eyepiece, slide the magnetic pointer on your Dobsonian base to the azimuth of your reference star. I ...
... chosen star is to Polaris, the less it will move in your eyepiece, which will make calibrating the HALO easier and more accurate. Once you have Polaris (or your other reference star) centered in your eyepiece, slide the magnetic pointer on your Dobsonian base to the azimuth of your reference star. I ...
The COMPLETE Survey of Star-Forming Regions
... spectral resolution than in the past. The two prime results of these efforts were: 1) evidence for “inflow” (a.k.a. infall) in many sources4 (e.g. Mardones et al. 1997); and 2) evidence for depletion of many (allegedly) high-density-tracing molecular species (e.g. Caselli et al. 1999; Tafalla et al. ...
... spectral resolution than in the past. The two prime results of these efforts were: 1) evidence for “inflow” (a.k.a. infall) in many sources4 (e.g. Mardones et al. 1997); and 2) evidence for depletion of many (allegedly) high-density-tracing molecular species (e.g. Caselli et al. 1999; Tafalla et al. ...
Benjamin Banneker
... Henjamin grew up working hard o n his father's tobacco farm and continued to develop his extraordinary mind. He bought a violin and a flute and taught himself to play both instruments. When h e was twenty-one years old, he decided to build a clock. A clock was a rare thing in colonial America, and B ...
... Henjamin grew up working hard o n his father's tobacco farm and continued to develop his extraordinary mind. He bought a violin and a flute and taught himself to play both instruments. When h e was twenty-one years old, he decided to build a clock. A clock was a rare thing in colonial America, and B ...
Experimental FLIR study Gruber, James Powell Calhoun: The NPS Institutional Archive 1979-06
... the nonfeedback type mirror is limited much more in its ...
... the nonfeedback type mirror is limited much more in its ...
The Ages of Astrophotography - Powered by Catchers of the Light
... “The process of M. Daguerre is much more sensitive to the action of light than those which had been used so far. Never before has natural moonlight produced any perceptible physical effect, even when magnified with the largest lens, or focused by the biggest reflective mirror. The plates prepared by ...
... “The process of M. Daguerre is much more sensitive to the action of light than those which had been used so far. Never before has natural moonlight produced any perceptible physical effect, even when magnified with the largest lens, or focused by the biggest reflective mirror. The plates prepared by ...
P2830syllSp07
... Course objectives and learning goals: Optics is an interdisciplinary science, ranging from simple lenses to sophisticated laser communication and interferometry. In this course we will explore the fundamentals as well as applications including ray tracing, telescope design and use, eyepieces, photom ...
... Course objectives and learning goals: Optics is an interdisciplinary science, ranging from simple lenses to sophisticated laser communication and interferometry. In this course we will explore the fundamentals as well as applications including ray tracing, telescope design and use, eyepieces, photom ...
Learning Outcomes for GSUSA Camp Activities
... c. Women have always been involved with STEM. Their contributions have not always been recorded or recognized and so it may appear that they have only recently started “making their mark.” 7. Integrate numerical thinking, and language, into ALL your troops’ activities. a. Demonstrate through persona ...
... c. Women have always been involved with STEM. Their contributions have not always been recorded or recognized and so it may appear that they have only recently started “making their mark.” 7. Integrate numerical thinking, and language, into ALL your troops’ activities. a. Demonstrate through persona ...
Real-time measurement of volcanic SO2 emissions: validation of a
... Comparison measurements were made in a variety of conditions incorporating areas of both low and high plume pathconcentration, changes in elevation, and diverse sky conditions. Five simultaneous traverses were made with both COSPEC and FLYSPEC in the summit region of Kilauea in March 2002 and result ...
... Comparison measurements were made in a variety of conditions incorporating areas of both low and high plume pathconcentration, changes in elevation, and diverse sky conditions. Five simultaneous traverses were made with both COSPEC and FLYSPEC in the summit region of Kilauea in March 2002 and result ...
Acquisition, Tracking and Pointing control
... choosing a set of attitude parameters (we used the Euler parameters). The motion of the receiver telescope with respect to the transmitter is considered to follow the pm-computed reference angular motion, designed in order to maintain the optical link between source and target during an orbital pass ...
... choosing a set of attitude parameters (we used the Euler parameters). The motion of the receiver telescope with respect to the transmitter is considered to follow the pm-computed reference angular motion, designed in order to maintain the optical link between source and target during an orbital pass ...
Exploring the physical properties of the first galaxies
... Hubble/WFC3 observations now allow us to explore galaxies present in the first billion years of the Universe’s history. Predictions from large hydro-dynamical are in fairly good agreement with the observed intrinsic UV LF. These simulations can also be used to test and refine observational technique ...
... Hubble/WFC3 observations now allow us to explore galaxies present in the first billion years of the Universe’s history. Predictions from large hydro-dynamical are in fairly good agreement with the observed intrinsic UV LF. These simulations can also be used to test and refine observational technique ...
My Planets
... Panorama of peaceful rural scene We all live on planet Earth. Maybe you knew that. Our planet Earth is much bigger than any of us, so we can only see a little bit of it. But astronauts have gone high up into the sky, into outer space. A long time ago some astronauts went all the way to the moon. Whe ...
... Panorama of peaceful rural scene We all live on planet Earth. Maybe you knew that. Our planet Earth is much bigger than any of us, so we can only see a little bit of it. But astronauts have gone high up into the sky, into outer space. A long time ago some astronauts went all the way to the moon. Whe ...
Planet Observing 24 Oct 2015
... clear, observations will be made with PARI’s telescopes to see the phases of Venus and Mercury and the moons of Jupiter. In case of inclement weather, a sky software will be used by PARI astronomers to show visitors how to observe these beautiful planets through the end of the year. Visitors are inv ...
... clear, observations will be made with PARI’s telescopes to see the phases of Venus and Mercury and the moons of Jupiter. In case of inclement weather, a sky software will be used by PARI astronomers to show visitors how to observe these beautiful planets through the end of the year. Visitors are inv ...
The University of Lethbridge Chemistry 2740
... Notes: 1) In order to finish this lab in the time allotted, students must be well organized and prepared to start this experiment at the beginning of the period. 2) The ~ 0.40 M NaOH solution will need to be standardized by each group. This can be done before or after the experiment is completed, bu ...
... Notes: 1) In order to finish this lab in the time allotted, students must be well organized and prepared to start this experiment at the beginning of the period. 2) The ~ 0.40 M NaOH solution will need to be standardized by each group. This can be done before or after the experiment is completed, bu ...
MERLIN (Methane Remote Sensing Lidar Mission)
... regional to continental scale CH4 fluxes can be estimated to generally within less than 20% of their mean values. This requires high-precision and high accuracy observations, the ability to make measurements globally (even in the high-latitudes, during the winter months), and to avoid geographical b ...
... regional to continental scale CH4 fluxes can be estimated to generally within less than 20% of their mean values. This requires high-precision and high accuracy observations, the ability to make measurements globally (even in the high-latitudes, during the winter months), and to avoid geographical b ...
The Scuti star XX Pyx is an ellipsoidal variable
... abundance values. We show that an increase in the relative number fraction of iron throughout the whole star or a large decrease in the initial hydrogen abundance make the stellar models matching the four selected modes satisfy all observational constraints and we provide the general properties of ...
... abundance values. We show that an increase in the relative number fraction of iron throughout the whole star or a large decrease in the initial hydrogen abundance make the stellar models matching the four selected modes satisfy all observational constraints and we provide the general properties of ...
9. Telescope structure and kinematics
... The design, fabrication, integration operation and maintenance of the supporting structure of a 100-m class telescope is one of the major challenges of the OWL project. The structure must provide sufficient bandpass for the motion control system as well as the required tracking accuracy and dimensio ...
... The design, fabrication, integration operation and maintenance of the supporting structure of a 100-m class telescope is one of the major challenges of the OWL project. The structure must provide sufficient bandpass for the motion control system as well as the required tracking accuracy and dimensio ...
The WSO, a world-class observatory for the ultraviolet
... There are several driving principles behind the design of the WSO mission. The plan is to operate a 1-2 meter class telescope in Earth orbit with a spectroscopic and imaging capability specific to the UV wavelength range. The telescope should have a high throughput and the mission optimized for oper ...
... There are several driving principles behind the design of the WSO mission. The plan is to operate a 1-2 meter class telescope in Earth orbit with a spectroscopic and imaging capability specific to the UV wavelength range. The telescope should have a high throughput and the mission optimized for oper ...