Popular Astronomy, Volume 54Goodsell Observatory of Carleton College, 1946 |
From inside the book
Results 1-3 of 77
Page 297
... plate or telescope was shifted , and a second exposure , of the same duration as the first , and of the same field was taken on the same plate . Thus each star left on the plate two images , and the pattern of large and small images of ...
... plate or telescope was shifted , and a second exposure , of the same duration as the first , and of the same field was taken on the same plate . Thus each star left on the plate two images , and the pattern of large and small images of ...
Page 390
... plate . An isochro- matic plate exposed behind a yellow filter registered the yellow image . The necessary blue images , or to use better terminology , possibly , the predominately blue images were taken by exposing the same plate ...
... plate . An isochro- matic plate exposed behind a yellow filter registered the yellow image . The necessary blue images , or to use better terminology , possibly , the predominately blue images were taken by exposing the same plate ...
Page 394
... plate and a Nicol prism . Öhman employed in his device three plane crystal plates which he palced in front of the photographic plate . The light first passed through a thin ( 4 mm ) calcite plate that split the light beam into two plane ...
... plate and a Nicol prism . Öhman employed in his device three plane crystal plates which he palced in front of the photographic plate . The light first passed through a thin ( 4 mm ) calcite plate that split the light beam into two plane ...
Contents
Morgan H R Motions in the solar system | 2 |
Names of the sateillites The Samuel G Barton | 122 |
THE SEVENTYFOURTH MEETING OF THE AMERICAN ASTRO | 159 |
18 other sections not shown
Other editions - View all
Common terms and phrases
AAVSO aerolite American appeared asteroids Astronomical Society atmosphere average brighter brightness California catalog cell color comet computed constant coördinate number corona Crater curve cycle determined diameter distance earth eclipse effective wave length energy ephemeris equation error exposure fall field filter galvanometer Harvard Harvard College Observatory instruments intensity Jupiter Kepler latitude light longitude lunar magnitude scale maximum means measurements meeting meteorites Meteoritic Falls meteors method moon motion Mount Wilson nebulae North Polar Sequence Nova objective observations Observatory obtained OCCULTATIONS VISIBLE orbit period photoelectric photographic photographic magnitudes photometer photometry Pickering planets plate Polar Sequence present prism Professor Puente-Ladron radiation region reported satellites Saturn September siderites solar spectral spectrophotometry spectrum standard Stebbins stellar sun-spot sunspot surface Table telescope tion U. S. Naval Observatory University Variable Star Venus visual visual magnitude Yerkes Observatory