a history of the mcmath-pierce solar telescope - NSO
... The Sun - nothing can be of a more basic importance. It is the core of our solar system, the life giver. Worshiped as divine throughout history. So basic to our existence that it merits a single-syllable name in many cultures - Ra, Sol, and by us, Sun. Some may feel that the Sun has lost some of its ...
... The Sun - nothing can be of a more basic importance. It is the core of our solar system, the life giver. Worshiped as divine throughout history. So basic to our existence that it merits a single-syllable name in many cultures - Ra, Sol, and by us, Sun. Some may feel that the Sun has lost some of its ...
PDF - WM Keck Observatory
... provided by the TMT would provide scientists with a powerful new tool. TMT represents a big jump in the light collecting power. It will be the largest optical/IR observatory in the Northern Hemisphere ...
... provided by the TMT would provide scientists with a powerful new tool. TMT represents a big jump in the light collecting power. It will be the largest optical/IR observatory in the Northern Hemisphere ...
Astronomy Astrophysics Circumstellar emission in Be/X-ray binaries of the Magellanic
... All lines showed a full width at half maximum (FWHM) much higher than the spectral resolution of the different instrumental setups. Therefore, the impact of spectral resolution on the measured EW is negligible. Errors in the equivalent width measurements were estimated averaging over several adopted ...
... All lines showed a full width at half maximum (FWHM) much higher than the spectral resolution of the different instrumental setups. Therefore, the impact of spectral resolution on the measured EW is negligible. Errors in the equivalent width measurements were estimated averaging over several adopted ...
Lecture Notes and Essays in Astrophysics VOLUME III
... VIRTIS observations depend strongly on the wavelength and three cloud layers are clearly observed with uncorrelated structures at 380 nm and 980 nm in reflected light and at 1.74 µm in infrared transmitted light. In order to determine the altitude location of these clouds we used the following appro ...
... VIRTIS observations depend strongly on the wavelength and three cloud layers are clearly observed with uncorrelated structures at 380 nm and 980 nm in reflected light and at 1.74 µm in infrared transmitted light. In order to determine the altitude location of these clouds we used the following appro ...
RTICC Rapid Terrestrial Imaging CubeSat Constellation
... The Walker configuration initially chosen was 500 km altitude with 60° inclination, with 36 planes of 10 spacecraft each. The altitude was chosen to achieve 3 m imaging resolution while minimizing orbit decay. The inclination was chosen to allow reasonable delta-V (~3 km/s from 35° to 60°) while ac ...
... The Walker configuration initially chosen was 500 km altitude with 60° inclination, with 36 planes of 10 spacecraft each. The altitude was chosen to achieve 3 m imaging resolution while minimizing orbit decay. The inclination was chosen to allow reasonable delta-V (~3 km/s from 35° to 60°) while ac ...
chapter 5—x-ray equipment
... DIF: Difficult 2. What is the approximate rms voltage of a single-phase sine wave with a kVp of 75? ANS: ...
... DIF: Difficult 2. What is the approximate rms voltage of a single-phase sine wave with a kVp of 75? ANS: ...
Gamma Ray Bursts
... Designed to record data on tape and transmit while flying over USA In 1992, tape recorders broken NASA built telemetric stations in Africa and Australia Thanks to direct transmision ground based telescopes could immediately follow the bursts ...
... Designed to record data on tape and transmit while flying over USA In 1992, tape recorders broken NASA built telemetric stations in Africa and Australia Thanks to direct transmision ground based telescopes could immediately follow the bursts ...
Sample pages 1 PDF
... capabilities to find very distant, and thus very dim, objects and to examine them in detail have improved immensely thanks to the capability of these large optical telescopes. A second example is the technical evolution and size of optical detectors. Since the introduction of CCDs (charge-coupled de ...
... capabilities to find very distant, and thus very dim, objects and to examine them in detail have improved immensely thanks to the capability of these large optical telescopes. A second example is the technical evolution and size of optical detectors. Since the introduction of CCDs (charge-coupled de ...
Searching satellites of asteroid Itokawa by imaging observation with Hayabusa spacecraft
... satellites were confirmed, it would help to evaluate the mass of Itokawa determined using other scientific instruments on the Hayabusa spacecraft. The findings from previous radar studies were important to this study because the radar beam was about 1,000 km wide at Itokawa’s distance (Ostro et al., ...
... satellites were confirmed, it would help to evaluate the mass of Itokawa determined using other scientific instruments on the Hayabusa spacecraft. The findings from previous radar studies were important to this study because the radar beam was about 1,000 km wide at Itokawa’s distance (Ostro et al., ...
PVPhotFlux
... • internal calibration sources • fully covered by PVPhotBol (PHOT characterisation) • independent confirmation of minimum flux may be desirable – not only depends on detector properties – suitable weak calibration targets from ISO GBPP / ISOPHOT Cohen – observe set of targets to minimise impact of f ...
... • internal calibration sources • fully covered by PVPhotBol (PHOT characterisation) • independent confirmation of minimum flux may be desirable – not only depends on detector properties – suitable weak calibration targets from ISO GBPP / ISOPHOT Cohen – observe set of targets to minimise impact of f ...
JRASC, June 2014 Issue (PDF, low resolution)
... The observational program used the National Science Foundation’s Green Bank Telescope, the Arecibo radio telescope in Puerto Rico, and the Westerbork Synthesis Radio Telescope in the Netherlands. They also studied the system using data from the Sloan Digital Sky Survey, the GALEX satellite, the WIYN ...
... The observational program used the National Science Foundation’s Green Bank Telescope, the Arecibo radio telescope in Puerto Rico, and the Westerbork Synthesis Radio Telescope in the Netherlands. They also studied the system using data from the Sloan Digital Sky Survey, the GALEX satellite, the WIYN ...
The Norman Lockyer plate archive collection
... Last!” The line, however, remained an exquisitely coloured line absolutely coincident with the line C of the solar spectrum (a Fraunhofer line due to hydrogen in the red) and, as I saw it, a prolongation of that line. Leaving the telescope to be driven by the clock, I quitted the observatory to fetc ...
... Last!” The line, however, remained an exquisitely coloured line absolutely coincident with the line C of the solar spectrum (a Fraunhofer line due to hydrogen in the red) and, as I saw it, a prolongation of that line. Leaving the telescope to be driven by the clock, I quitted the observatory to fetc ...
Hot slumping glass technology and integration process to
... (RD2,RD3,RD4). Glass is characterized by a low density (less than 2.5 g/cm3) and can be produced into large amount of sheets also with very low thickness (down to 0.1 mm or less); glass sheet can be shaped with a proper thermal cycle performed in an oven onto (or into) a mould. By means of this repl ...
... (RD2,RD3,RD4). Glass is characterized by a low density (less than 2.5 g/cm3) and can be produced into large amount of sheets also with very low thickness (down to 0.1 mm or less); glass sheet can be shaped with a proper thermal cycle performed in an oven onto (or into) a mould. By means of this repl ...