The System of the Stars |
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Page xiii
... Common Proper Motion - Colour Contrasts - Relative Variability - Future Investigations 163 CHAPTER XII . VARIABLE DOUBLE STARS . Nature of Light - Changes in Compound Stars - Relative Variability- Satellite of Cygni - Variable Double ...
... Common Proper Motion - Colour Contrasts - Relative Variability - Future Investigations 163 CHAPTER XII . VARIABLE DOUBLE STARS . Nature of Light - Changes in Compound Stars - Relative Variability- Satellite of Cygni - Variable Double ...
Page 14
... of different kinds . Proper ' motions - so - called to distinguish them from common ' apparent displacements due to the slow shifting of the points 6 RARY THE UNIVERSITY CF THE METHODS OF SIDEREAL RESEARCH 15 14 THE SYSTEM OF THE STARS.
... of different kinds . Proper ' motions - so - called to distinguish them from common ' apparent displacements due to the slow shifting of the points 6 RARY THE UNIVERSITY CF THE METHODS OF SIDEREAL RESEARCH 15 14 THE SYSTEM OF THE STARS.
Page 15
... it is an equatoreal telescope ; its micrometrical powers are conferred by the division of the object - glass into two halves sliding along their common diameter , and dupli- cating by their separation the combined image formed by them.
... it is an equatoreal telescope ; its micrometrical powers are conferred by the division of the object - glass into two halves sliding along their common diameter , and dupli- cating by their separation the combined image formed by them.
Page 18
... common to both can thus easily be identified ; and their genuine occur- rence leaves no doubt that the element compared -hydrogen , sodium , iron , magnesium , or any other - enters into the compo- sition of the star . But this process ...
... common to both can thus easily be identified ; and their genuine occur- rence leaves no doubt that the element compared -hydrogen , sodium , iron , magnesium , or any other - enters into the compo- sition of the star . But this process ...
Page 32
... Common and Roberts and by M. von Gothard , strongly re- commend their application to that and other special purposes . Each telescopic genus thus has its place in the boundless fields of photographic research ; each has its own line of ...
... Common and Roberts and by M. von Gothard , strongly re- commend their application to that and other special purposes . Each telescopic genus thus has its place in the boundless fields of photographic research ; each has its own line of ...
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Common terms and phrases
61 Cygni 70 Ophiuchi absorption Aldebaran Algol Andromeda Andromeda nebula appear Arcturus Argûs Astr astronomy atmospheric bands Betelgeux blue bodies bright lines brilliant Cassiopeia Catalogue centre century cluster colour comets condensation Cygni dark detected distance double stars effect extent faint galactic Harvard heavens heliometer hence Huggins hydrogen hydrogen lines Ibid interval less light Lockyer luminous lustre Lyræ magnitude star mass maximum measured ment miles Milky Mira Monthly Notices movements nearly nebula ninth magnitude objects observations Observatory Ophiuchus orbit Orion Orion nebula pair parallax peculiarities period Phil photographic photosphere planetary plates Pleiades present Professor proper motion rays red stars refractor remarkable remote satellite Schjellerup seems sidereal Sir John Herschel Sirian Sirius sixth magnitude small stars solar southern space spectra spectroscopic spectrum stellar Struve sun's telescope tion Trans variable stars velocity visible visual Vogel yellow
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