Experimental evaluation of geometric accuracy and stability of the image orthicon for astronomical applications
Image orthicon in high precision astronomical camera, evaluating geometric accuracy and stability by distortion measurement
Burns, J.↗
SEARCH · Search NASA
Results for “(Astronomical”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Application of space and astronomic techniques to solid earth and ocean physics
Space and astronomic methods applied to solid earth and ocean physics
Kaula, W. M.↗
Exploitation of ionospheric Faraday rotation to perform radar astronomical polarization measurements
Radar astronomical polarization measurements for lunar echoes by exploiting ionospheric Faraday rotation with linearly polarized antenna
Burns, A. A.↗
Problems encountered during development of an astronomical television system for an earth- orbiting observatory
OAO 2 satellite Celescope astronomical TV system, describing various developmental problems for future guidelines
Nozawa, Y.↗
A universal magnitude system for astronomical objects
Spectral power flux magnitude system for astronomical scaling
Kohman, T. P.↗
Hard X-ray experiment for Astronomical Netherlands Satellite /ANS/ program Final report
Hard X ray experiment for Astronomical Netherlands Satellite to detect and measure X ray sources and line emission
Source record↗
Astronomical use of television-type image sensors
Conference on using TV type image sensors in astronomical photometry
Boscarino, V. R.↗
Orbital science photography. Part H - Astronomical photography
Astronomical photography of zodiacal light and lunar libration clouds
Dunkelman, L.↗
Automation and remote control of astronomical telescopes
Astronomical telescope automation and remote control, discussing advantages and problems
Maran, S. P.↗
Evaluation of orbital optical contamination phenomena and its effect on astronomical experiments
Orbital environment contamination and effect on optical instruments and astronomical experiments in Skylab Program
Majoros, J.↗
Automated analysis of astronomical spectra
Automated analysis of high resolution IR astronomical spectra by computer program, presenting procedures for spectral line width, depth and frequency determination
Hutchison, R. B.↗
The SAS-D ultraviolet astronomical satellite
Explorer SAS-D astronomical satellites for UV spectra recording by TV cameras
Underhill, A. B.↗
Astronomical photography, part T
Photographic observations of astronomical interest conducted during the Apollo 15 mission are discussed. Procedures used in photographing the solar corona are described together with calibration and reduction methods. In addition, selected preliminary results obtained from the photography are presented.
Dunkelman, L.↗
Orbiting Astronomical Observatory-C (OAO-C): Press kit
Mission planning for the Orbiting Astronomical Observatory-C (OAO-C) is presented. The characteristics of the observatory and its capabilities are described. The following experiments are discussed: (1) Princeton Experiment Package, (2) X-ray experiment, and (3) guest investigator program. Results of the OAO-2 observatory are presented. A tabulation of flight events is included.
Allaway, H. G.↗
Ultraviolet photometry from the Orbiting Astronomical Observatory. II Interstellar extinction.
Evaluation of interstellar extinction curves over the region from 3600 to 1100 A for 17 stars. The observations were made by the two Wisconsin spectrometers on board the Orbiting Astronomical Observatory 2, with spectral resolutions of 10 and 20 A. The extinction curves generally show a pronounced maximum at 2175 plus or minus 25 A, a broad minimum in the region from 1800 to 1350 A, and finally a rapid rise to the far-ultraviolet. Large extinction variations from star to star are found, especially in the far-ultraviolet; however, with only two possible exceptions in this sample, the wavelength at the maximum of the extinction bump is essentially constant. These data are combined with visual and infrared observations to display the extinction behavior over a range in wavelength of about a factor of 20. The observations appear to require a multicomponent model of the interstellar dust.
Bless, R. C.↗
Interstellar scattering and the sizes of astronomical masers.
The suggestion is explored that scattering by inhomogeneities in the distribution of electrons causes astronomical masers to appear larger than their actual sizes. It is shown that neither scattering near the source nor scattering in the intervening medium is sufficiently strong to produce this effect.
Boyd, R. W.↗
Minor constituents in planetary atmospheres - Ultraviolet spectroscopy from the Orbiting Astronomical Observatory.
Orbiting Astronomical Observatory data between 2000 and 3600 A, obtained by the Wisconsin Experimental Package objective grating scanning spectrometer, are used to set upper limits to the abundances of many minor constituents in the atmospheres of Mars, Jupiter, Saturn, and Venus.
Owen, T.↗
The High Energy Astronomical Observatory.
The High Energy Astronomical Observatory (HEAO) is an earth satellite platform designed specifically around the very large and heavy instruments now required to make a significant advance in high-energy astrophysics. This new field of astronomy includes X-ray, gamma-ray, and cosmic-ray studies. The state of knowledge in high-energy astrophysics is discussed, giving attention to X rays, gamma rays, the diffuse component, emission mechanisms, and particle astrophysics. The observational objectives of the HEAO are considered together with the HEAO configuration and the experiments under study for the first HEAO, the HEAO-B, and the HEAO-C. HEAO-A is to be placed in orbit in 1975.-
Peterson, L. E.↗