Publisher's Synopsis
Excerpt from Monograph of the Central Parts of the Nebula of Orion: R. A. 5h 28m 24s; O, N. P. D. 952910; 9, 1860; 0
The main Object of this memoir is to leave such measures and descriptions of the brightest parts of the nebula of Orion as shall enable another person Observing in after years with the same telescope, under like conditions, to say with certainty whether or no changes have occurred in these parts of this nebula. The brightest parts are chosen so as to avoid as far as possible any uncertainty in the conclusion then to be reached, and also because there is little to be added to the complete Observations of Lord rosse and of Gr. P. Bond on, the fainter portions. A second and an important Object is to make a thorough discussion of the vast mass of material now on hand.
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