

^>u^^ >v 





M.-P.— Vol. I.] j9yi VIDSON— APPARENT PROJECTION, ETC. 75 



emersion from behind the narrow, dark edge of the Moon 

 (which was one day past the full) the 6.4-inch Equatorial 

 noted the reappearance 0.17 second earlier than the two 

 three-inch telescopes. 



At the Chabot Observatory, thirty-six seconds of time 

 east of the Davidson Observatory, the observer used the 

 Clark eight-inch Equatorial for the same occultation. The 

 atmospheric conditions were nearly the same as mentioned. 

 The star advanced upon the apparent limb of the Moon, 

 but not so far as above mentioned, and some of the apparent 

 rays of the star projected outside the Moon's border. 



On March 29, 1887, we observed the immersion of 

 a Tauri at the dark limb, and the emersion at the bright 

 limb; the former by daylight, and the ash-gray limb not 

 visible. The disappearance was instantaneous. At reap- 

 pearance the Moon's limb was blurred and very unsteady, 

 and the star reappeared upon this blurred bright image 

 inside of the outermost limit, which was very fuzzy and 

 decreasing in brightness outward. The star was not so 

 bright as anticipated, but its almost sparkling red color left 

 no doubt whatever in our mind as to the nearest tenth of a 

 second of the epoch. The star left the limb in two and one- 

 half or three seconds, when it appeared much brighter. At 

 emersion a power of 250 was employed- » 



We do not mention the hundred and more occultations 

 which we have observed when the above phenomenon was 

 not present, or when the smallness and whiteness of the star 

 may have prevented its detection. 



Other Observed Occultations of the Stars by 



THE Moon, and of Stars and Satellites 



BY Jupiter. 



In 1890, the Astronomer Royal called the attention of the 

 Royal Astronomical Society to the occultations of ^ Tauri 

 (3.0 magn.) that presented matter of "interest" to 

 observers and astronomers. On September 16, 1889, ^''' 

 Turner, of the Greenwich Observatory, observed the occul- 

 tation of the same star by the bright limb of the Moon with 



