The Astrophysical Journal, Volumul 10University of Chicago Press, 1899 "Letters to the Editor" issued as Part 2 and separately paged from v. 148, 1967. Beginning in 2009, the Letters published only online. |
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... NEBULA IN ORION . J. Scheiner NOTE ON THE FOREGOING ARTICLE BY PROFESSOR SCHEINER . James E. Keeler - THE POSITION OF THE STARS OF TYPE IV AND OF THE VARIABLE STARS OF TYPE III IN REFERENCE TO THE MILKY WAY . T. E. Espin OBSERVATIONS OF ...
... NEBULA IN ORION . J. Scheiner NOTE ON THE FOREGOING ARTICLE BY PROFESSOR SCHEINER . James E. Keeler - THE POSITION OF THE STARS OF TYPE IV AND OF THE VARIABLE STARS OF TYPE III IN REFERENCE TO THE MILKY WAY . T. E. Espin OBSERVATIONS OF ...
Pagina
... NEBULA H IV . 13 IN CYGNUS . James E. Keeler - ON THE EFFECT OF PRESSURE UPON THE WAVE - LENGTHS OF THE LINES OF THE HYDROGEN SPECTRUM . J. Wilsing ON THE PRESENCE OF OXYGEN IN THE ATMOSPHERES OF CER- TAIN FIXED STARS . David Gill MINOR ...
... NEBULA H IV . 13 IN CYGNUS . James E. Keeler - ON THE EFFECT OF PRESSURE UPON THE WAVE - LENGTHS OF THE LINES OF THE HYDROGEN SPECTRUM . J. Wilsing ON THE PRESENCE OF OXYGEN IN THE ATMOSPHERES OF CER- TAIN FIXED STARS . David Gill MINOR ...
Pagina 22
... Nebula will , on reflection , easily convince themselves that the Purkinje phenomenon has very little to do with estimates of the relative intensities of the three principal lines . There remains the equally important question as to ...
... Nebula will , on reflection , easily convince themselves that the Purkinje phenomenon has very little to do with estimates of the relative intensities of the three principal lines . There remains the equally important question as to ...
Pagina 23
... Nebula made by those who see the lines as gray is absolutely zero . There remains the case of those who are able to perceive that the lines have a blue - green tinge , but who cannot distinguish differences in their colors . If the ...
... Nebula made by those who see the lines as gray is absolutely zero . There remains the case of those who are able to perceive that the lines have a blue - green tinge , but who cannot distinguish differences in their colors . If the ...
Pagina 19
... NEBULA OF ORION . By S. A. MITCHELL . A NOTE has been published in this JOURNAL regarding the application of the concave grating to stellar photography . ' The grating has been tried in several different ways , but the best results are ...
... NEBULA OF ORION . By S. A. MITCHELL . A NOTE has been published in this JOURNAL regarding the application of the concave grating to stellar photography . ' The grating has been tried in several different ways , but the best results are ...
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absorption aperture apparatus appear astronomers ASTROPHYSICAL JOURNAL axis bands blackening Board of Visitors bolometer bright lines brighter camera carbon catalogue cents chromosphere cluster Coin comparison compound spectrum corona corresponding curve density determined diameter disk displacement eclipse electrodes employed equal error exposure faint stars Fe lacking focal length given gives Harvard College Observatory hydrogen lines inches instrument intensity investigation Keeler Lick Observatory light line of sight luminosity magnitude maximum mean measured mercury vapor Messier 13 metallic meteors micrometer mirror Morris Travers Naval Observatory objective observations obtained orbit oxygen photographs photometric Pickering plate position Potsdam pressure prism Professor radiation rays refractor region ring nebula Scheiner screw slit spark spectra spectrograph spectroheliograph spectroscope stellar telescope temperature tenth-meters tion trum tube University of Chicago Ursae vanadium Variable Stars Variable Velocity visual W. W. Campbell wave-lengths wedge Widely separated Yerkes Observatory
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Pagina 49 - EMGs were sampled with surface electrodes for ten revolutions at the beginning, in the middle and at the end of each work...
Pagina 272 - When an appointment or detail is to be made to the office of astronomical director, director of the Nautical Almanac, astronomer, or assistant astronomer, the board of visitors may recommend to the Secretary of the Navy a suitable person to fill such office, but such recommendation shall be determined only by a majority vote of the members present at a regularly called meeting of the board held in the city of Washington.
Pagina 197 - The officers of the Society shall consist of a President, two Vice Presidents, a Secretary...
Pagina 197 - Society to serve for a period of one year, and two members shall be chosen annually to serve for a period of two years or until their successors are duly elected and qualified.
Pagina 272 - The board of visitors shall prepare and submit to the Secretary of the Navy regulations prescribing the scope of the astronomical and other researches of the Observatory and the duties of its staff with reference...
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