28 CATALOGUE OF STARS WITHIN 
TABLE IV.—PLATE CONSTANTS. 


H 
Plate. jImage.| Standard stars. g n 


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__ | |_| 

mm. 
3 
= 
= 








Sept. 16 | Big a, 8,5,¢,Y, x, w. — 1.4046 | + 60.9458 | 67 
no. 2 | Mid. — 1.3959 | + 61.3492 | 67 
Sept. 16 | Big | 4,x,A,H, », p. — 0.9446 | — 58.8603 | 67 
no. 4 | Mid. — 0.9310 | — 58.4621 | 67 
Sept. 16 | Big | u,»,&,0, 7, p, d. + 1.1355 | — 57.8153 |112 
no. 5 | Mid. 4-" 1.1323 | — S7.4290 j112 
Sept. 16 | Big ap, ose 8 a. + 1.3521 | + 62.1408 [112 
no. 7 | Mid. 143466 | A OF .54210 1 T2 
Sept. 18 | Big | p,¢,7,v,¢,, x, 0. — 2.8353 | + 60.5764 | 22 
no. 1 | Mid. — 2.8232 | + 60.9637 | 22 
Sept. 18 | Big | 65,7, 6,¢,k, ». — 2.2755 | — 60.3089 | 22 
no. 3 | Mid. — 2.2685 | — 59.9306 | 22 
Sept. 21 Big ¥,0,7,P,0,7T,V, ?, Y. ah 5529 Ca 58.7921 155 
no. 13 | Mid. + 2.5464 | — 58.3941 |155 
Sept. 21 | Big | a,6,¢,¢ 7, 6,«. + 2.2749 | + 61.2484 |155 
+ 2.2736 | + 61.6462 |155 

no. 15 | Mid. 

The numbers in the last column of Table V are the probable errors 
of the single determinations of polar distance for each plate, and 
r cosec z will be the probable error of one determination of right ascen- 
sion for any star of polar distance =. 
TABLE V.—PROBABLE ERRORS OF PLATE CONSTANTS. 
Probable error of 
Plate. Im. 
E or 7 w A 
mm. Mu uv 
OTs EG 910 29 6 hess Big + .0015 | + .oo12 + 4 
Mid. .OOI5 .OOI2 4 
mene ixGinio; 4 (i) Big .OOI5 .OOII 4 
Mid. 0018 .OO13 5 
sept. 1670, 5 .....- Big .OO19 .OO14 5 
Mid. .OOI19 .OO14 5 
or oy BU he Tt Me dae Pg Big .0022 .0018 6 
Mid. .0025 .0020 7 
PEDU TOO, 1 oie 2s Big .0024 .0o18 6 
Mid. .0022 .OO17 6 
eek BS T10.03 eve Big .oo18 .OOI5 5 
Mid. .OO17 .OOT4 5 
Seat INO TS. ie .0013 .OO10 3 
Mid. .OOII .0008 3 
Sept. 21 no. 15 .....] Big .OO19 .0016 5 
Mid. .0o18 .OO14 5 

