An Investigation in Stellar Photography, Conducted At the Harvard College Observatory With the Aid of An Appropriation From the Bache Fund
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Imper. St. Petersbourg, XXXII. No. 6, p. 22 ; b, observations STELLAR PHOTOGRAPHY.
213 of Pritchard, Monthly Notices Royal Astron. Soc, XLII., p. 227; c, observations in Uranometria Oxoniensis, p. 94 ; and d, observations in Harvard Observatory Annals, XIV., p. 398. To correct for the difference in the zero of the scale of these four catalogues, their magnitudes were first corrected by adding the quantities —0.07, —0.15, —0.12, and +0.10, respectively, before -subtracting the photographic magni...- tudes. The sums of the positive and negative residuals for each catalogue were thus made nearly equal. The last column describes the spectrum. A denotes that the character of the spectrum is uncertain, owing to the presence of an adjacent star ; F, that the spectrum is too faint to render its character certain , I, that the spectrum belongs to Class I. as described above; R, that the spectrum possesses some peculiarity more fully explained in the remarks following the table. These remarks also indicate which stars interfere when A is entered in the last column, and give additional observations when the first measures are discordant.
What to read after An Investigation in Stellar Photography, Conducted At the Harvard College Observatory With the Aid of An Appropriation From the Bache Fund?
You can find similar books in the "Read Also" column, or choose other free books by Pickering, Edward C. (Edward Charles), 1846-1919 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Imper. St. Petersbourg, XXXII. No. 6, p. 22 ; b, observations STELLAR PHOTOGRAPHY.
213 of Pritchard, Monthly Notices Royal Astron. Soc, XLII., p. 227; c, observations in Uranometria Oxoniensis, p. 94 ; and d, observations in Harvard Observatory Annals, XIV., p. 398. To correct for the difference in the zero of the scale of these four catalogues, their magnitudes were first corrected by adding the quantities —0.07, —0.15, —0.12, and +0.10, respectively, before -subtracting the photographic magni...- tudes. The sums of the positive and negative residuals for each catalogue were thus made nearly equal. The last column describes the spectrum. A denotes that the character of the spectrum is uncertain, owing to the presence of an adjacent star ; F, that the spectrum is too faint to render its character certain , I, that the spectrum belongs to Class I. as described above; R, that the spectrum possesses some peculiarity more fully explained in the remarks following the table. These remarks also indicate which stars interfere when A is entered in the last column, and give additional observations when the first measures are discordant.
What to read after An Investigation in Stellar Photography, Conducted At the Harvard College Observatory With the Aid of An Appropriation From the Bache Fund?
You can find similar books in the "Read Also" column, or choose other free books by Pickering, Edward C. (Edward Charles), 1846-1919 to read onlineMoreLess
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