Studies of the Nebulae: Made at the Lick Observatory, University of California, at Mount Hamilton, California, and Santiago, Chile, Volume 13University of California Press, 1918 - 268 pages |
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Page 15
... photographic plates soon learn , by hard necessity , to recognize the average flaw at a glance . A very large proportion of the objects counted are unmistakably nebulae ; as to the faintest nebulae , it is astonishing how faint and ...
... photographic plates soon learn , by hard necessity , to recognize the average flaw at a glance . A very large proportion of the objects counted are unmistakably nebulae ; as to the faintest nebulae , it is astonishing how faint and ...
Page 46
... photographic enlargement , because of small size or distortion due to distance from the center of the plate , and drawings of these are reproduced . These nebulae are 4282 ( 18 ) , 678 ( 19 ) , 169 ( 20 ) , I 1029 ( 30 ) , 5506 ( 31 ) ...
... photographic enlargement , because of small size or distortion due to distance from the center of the plate , and drawings of these are reproduced . These nebulae are 4282 ( 18 ) , 678 ( 19 ) , 169 ( 20 ) , I 1029 ( 30 ) , 5506 ( 31 ) ...
Page 53
... photographic tests has been made by Dr. W. K. Green at the Lick Observatory during the past year ; no certain evidence of polarisation could be detected . known " island universe " theory of the spiral nebulae OCCULTING MATTER IN THE ...
... photographic tests has been made by Dr. W. K. Green at the Lick Observatory during the past year ; no certain evidence of polarisation could be detected . known " island universe " theory of the spiral nebulae OCCULTING MATTER IN THE ...
Page 23
... photographic enlargement , of the many planetaries which do not exceed thirty seconds of arc in their greatest dimension . On the scale of the negatives taken with the Crossley Reflector , one inch equals 98377 , so that thirty seconds ...
... photographic enlargement , of the many planetaries which do not exceed thirty seconds of arc in their greatest dimension . On the scale of the negatives taken with the Crossley Reflector , one inch equals 98377 , so that thirty seconds ...
Page 24
... photographic reproduction can never be reached , and that such drawings can never supplant reference to the original negatives in all questions involving move- ment , change , or the relative intensities of structural features . In an ...
... photographic reproduction can never be reached , and that such drawings can never supplant reference to the original negatives in all questions involving move- ment , change , or the relative intensities of structural features . In an ...
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Studies of the Nebulae: Made at the Lick Observatory, University ..., Volume 13 Lick Observatory,Joseph Haines Moore Affichage du livre entier - 1918 |
Expressions et termes fréquents
appears bright bands bright lines brighter Campbell N₁ central portion central star continuous spectrum dark lane DETAILS OF OBSERVATION diameter diffuse nebulosity disk edge elongated exposure faint fainter figure g slitless Greater Magellanic Cloud H N₁ N₂ Haynes hydrogen hydrogen lines inclination km./sec Lick Obs LICK OBSERVATORY line Ia long Hẞ M. T. Exp major axis minor axis Miss Hobe N Miss Hobe N₁ moderately bright Moore Miss Hobe Moore N Moore N₁ N₂ N₁ N₂ Hẞ N₂ HB N₂ Hẞ Hy nearly round nucleus band object Orion nebula photographic planetary nebulae radial velocity region relative intensities ring Ring Nebula rotation s.n. Planetary Scott N Scott N₁ Sept Slit long small nebulae spectra spectrograms spiral nebulae spiral structure star of magn stellar condensations stellar nucleus ultra-violet under-exposed wave-lengths whorls Wolf-Rayet Wolf-Rayet stars Ηβ Ηγ