50 Mr. South' s observations of the apparent distances 



No. CCCCXLIII. R. A. 3^ 57" ; Decl. 13° 54' N. 



Nova ; 

 Double ; 9th and 10th magnitudes : a star C of the 5th mag- 

 nitude precedes it to the north. 



Measures of A B. 

 Passy ; February 9, 1825 ; Seven-feet Equatorial. 



Position = 23° 56' sf I 5 Obs. I DifF. = 2° o' ) r)5ffir,i1t 

 Distance = 44".o87 | 5 Obs. | DifF. = ©".793 ] ^^^^uit. 



Passy ; February 10, 1825 ; Seven-feet Equatorial. 



9th and 11th magnitudes. 



Position 2 ° s i' ./ 1 5 Obs. Diff. = 0° 47' ) y jigj 1 

 Distance 44".337 | 5 Obs. [ DifF. = o".9i3 ] ^^^ dimcult. 



The fog is very troublesome. 



Measures of A C. 

 Passy ; February 10, 1825 ; Seven-feet Equatorial. 



9th and 5th magnitudes. 



Position = 31° 11' np 

 Distance = 3' i'.gog 



5 Obs. 

 5 Obs. 



DifF. = 0° 32' 1 T, , , , ^ . 

 DifF. = i".o82 \ Tolerably steady. 



The star C preceding A to the north. 



Passy ; February 10, 1825 ; Portable Transit.* 

 Observed R. A. of the star A = 3'' 56' 44".9i. 



Mean Result. 

 of AB. Position 23'' 53' 5/; Distance 44".2 12 ; Epoch 1825.10. 

 of AC. 3i°ii' np; 3' i"-909; Epoch 1825.10. 



• My Troughton's Seven-feet Transit, to which reference was occasionally 

 made in the former Memoir, being, on account of its bulk, ill calculated for a tra- 

 velling companion, Mr. Simms was requested to construct me one that should be 

 more appropriate ; and as it fully answers the purpose for which it was designed, a 

 brief description of it may not prove altogether uninteresting to the travelling 

 Astronomer. 



The centre piece of this instrument is spheroidal : the length of the horizontal or 

 transverse axis, including the pivots, is 28 inches: on one end of this axis is a circle 

 of 9.9 inches diameter, having a ring of silver soldered to its circumference, on 

 which the dividing lines are drawn ; the circle is provided with a level and two ver- 

 niers ; the scale of the former reading to 10 seconds, the latter to minutes only ; it is 

 intended solely as a finder, but will give the apparent altitude of a celestial object ac- 

 curate to one minute. The tubes of the telescope are conical, screw into the centre- 

 piece, and may be removed from it at pleasure, as may be also the circle from the 



