ASTRONOMISCHE NACHRICHTEN.

In accordance with the request of Dr. E. von Rebeur the places of the following stars have been determined here by meridian observations. The list chiefly contains comparison stars for the Cape series of observations of Comet 1882 I, to which has been added some corn- parison stars employed for the same comet at other obser- vatories. . .

May I beg your advocacy in the hstr. Nachr. of a matter that has more than once been proposed, but which, SO far as I know, has never been carried out. I refer to the systematic devotion of one of the comparatively numerous suitably equipped European or American observatories to the determination of places of stars that have been employed in observations of Comets, faint stars of which occultations

NE 2688.

have been observed, zones of stars employed for scale or screw values, or stars that have been used for geodetic or other purposes. Engaged as this observatory is, and as many other observatories are, in special series of obser- vations, the determination of the places of such a list of stars as that now enclosed may form a serious interruption to work carefully prearranged, more particularly ' when a large number of stars occur within a limited period of Right Ascension. I am persuaded that such work could best be done by an observatory specially devoted to such purposes, and there is probably no field of labour in which an observatory could more surely and inimediately con- tribute to the advancement of astronomy.

Cape of Good Hope, I 885 July I 9. David Gill.

Der Wunsch, den der geehrte Verfasser obenstehenden Briefes ausspricht, scheint niir von seiner Seite durchaus gerechtfertigt, und es wird dies auch wohl sonst nur an- erkannt werden konnen. Wir haben in der That eine Anzahl Sternwarten, die fur die Bestimmungen von Ver- gleichsternen ausreichend ausgerustet sind und solche Be- obachtungen ubernehmen kijnnen, ohne ihre laufenden Arbeiten zu gefahrden. Nur in AusnahmefAllen, bei sehr sadlichen Sternen, wird man genothigt sein, die wenigen Sternwarten der Sudhalbkugel um Beobachtungen yon Ver- gleichsternen anzugehen ; im Uebrigen nerden die nordlichen Sternwarten in Europa und Amerika, die, zum Theil wenig

RA. 1885.0

6h 55"43513 1 3[.ag

7 '3 33.85 7 2 7 16.78 7 43 28.64 7 54 5 1 . 5 2 7 59 40.28 8 3 39.51 8 16 28.57 8 2 7 13.26 8 2 7 55.13

1 4 42.17

stens, weniger streng in Anspruch genommen sind, eintreten kiinnen.

In Folge obiger Anregung hat, nach einer Privatmit- theilung von Dr. Hilfiker, Assistent der Sternwarte zu Neu- chatel, der Director, Prof. Dr. Hirsch, die Absicht ausge- sprochen, die Bestirnmung von Vergleichsternen auf Ansuchen der Berechner von Corneten- oder Planetenbahnen zu uber- nehmen. Ich habe Grund anzunehmen, dass auch noch eioige andere Sternwarten sich zu dieser hochst verdienst- lichen Hulfsleistung bereit erklaren werden und hoffe daruber weitere Mittheilungen spater machen zu konnen.

Kiel 1885 Sept. 21 . A. Kmeger.

Prec.

+3?432 +3.432 +3.429 f-3.421 +3.407 +3.394 +3.380 4-3 314 +3.377 t-3.352 +3.338 +3.340

NPD. 1885.0 ~

7 4' 30' 0 : 2 7 74 23 14.96 14 28 44,05 74 38 44-27 74 54 55.99

7 5 '9 21.59 7 5 2 5 18-14 7 5 9 I - O Z 7 5 5 0 1-42

15 5 5 19.12

7 5 1 6.30

16 3 2 7 . 5 0

Prec.

+ 4"3 + 5.41 + 5.59 + 6.33 + 1.45

+ 9.64 + 8.15

+ 10.00

+ I 0.30 + 1 1 . 2 5 + I 2 . 0 1

+ I 2.06

- )bs -

2

2

2

2

2

2

3 2

.2

2 2

2

Red. ad 1. app. +1?2.1 + 7Y69

+1.22 + 8.00 +1.24 + 8.30 +1.26 + hi75 +1.29 + 9.24 +1.31 + 9.60

+ I . 2 2 + 7.91

- - - -

+?.35 4-10 .20

-14.38 4-10.47 - -

24

395 2688 396 - Rh. 1885.0

gh 29m4 7 s5 3 8 35 57.23 8 39 38.27

_____

8 49 14.34 8 5 2 37.89 9 4 31.0' 9 14 42.01 9 24 51.37 9 26 2 5 . 0 8 9 34 58.53 9 43 40.53 9 41 11.19

10 13 22.29 10 2 1 38.00 10 2 2 51.63 10 34 23.16 10 36 48.06 1 0 38 22.68

10 41 56.47

10 46 25.12

10 58 31.66 I I o 9.50

I I 9 16.04 11 11 40.01 1 1 13 41.64 I I 1 5 32.32 1 1 1 7 18.55 11 1 7 28.19 I I 18 16.61 I I 19 27.26 11 19 53.02 1 1 2 2 48.23 I 1 2 8 9.92 11 33 5.99 1 1 36 32.67 I I 38 24.58 I I 5 2 26.03 I I 5 2 36.87 1 1 54 2 1 . 9 1

I I 56 32.17 1 1 57 0.24 1 1 59 5099 1 2 2 25.00

I 2 2 34.08 1 2 6 37.41 I2 I 2 11.78 1 2 14 22.42 1 2 1 7 38.00 1 2 2 1 6.55 1 2 2 7 1 . 0 1

I 0 40 45.21

10 42 43.20

1 0 50 39.96

11 8 44.17

1 1 56 2 1 . 5 9

NPD. 1885.0

76 1 2 47.15 16 18 53.40 16 34 2 5 . 5 7 76 35 8.50 76 58 37.23 I 7 33 14-48 7 7 38 11.31 7 7 45 21.40 7 7 54 52.13 78 2 1 21.98 18 29 29,74 79 30 11.38

19 5 0 48.89 80 29 4 3 4 ' 80 43 10.76 80 29 38.87 80 5 ' 59.09 81 2 8.79 81 1 0 19.60 81 I 0 35.19 81 16 35.15 81 33 35.68

8 2 29 15.39

75'49'32:'41

79 32 7.23

82 3 15.70

82 2 0 13.63 8 2 23 21.67 8 2 30 11.82 82 44 5.87 8 2 46 57.93 83 I 20.98 83 5 2 35.03 83 1 5 32.81 8 2 5 1 48.34 83 4 39'49

83 34 37.35 83 26 14.81

83 51 2332 83 5 5 37.72 84 41 77.37 85 I 3.62

85 5 6.62 85 8 2 1 . 2 2

84 43 35.60

85 1 2 45.49 85 '5 52.79 85 42 4.32 85 28 4.98 85 5 7 23.24 86 46 30.96 86 1 7 59 26 86 30 3 ' 4 3 86 41 26.93 86 56 59.14

Prec. + I 2:20

-+I 2.62 + r 2 . 8 7 + 13.50 t 1 3 . 7 2 .+ I 4.46 + I 5.06 +15.63 f I 5 . 7 2 t 1 6 . 1 7

+16.61 +16;79

+ I 8.24 + 1 8 . 2 8 +18.67 +18.75 + 18.80 t r 8 . 8 7 + I 8.90 +18.92 -+ I 9.03

f 11.92

+I9.14 + 19.34 + 19.38 + I 9 4 5 +I9.57 +19.61 +19.6 j + 19.68 f-19.71 $..I9.11 +19.72 +'9.74 f I 9 - 7 5 +-'9.79 + I 9.86 S 19-92 + 19.95 +I9.97 +20.04 + 20.04 + 2 0 . 0 5

+20.05

+20 .05

+ 2 0 . 0 5

+ 2 0 . 0 5

+20.05

+20.05 + 20.03 +20.02

+ I 9.9 9 +'9.97 + 19.92

+zo.og

The last column gives the reductions from mean to apparent place, 188 were used at the Cape (see M. N. Vol. XL111.1).

- jb: - 2

2

2

2

2

2

2

2

2

2

2

2

2

2

I

2

I

2

2

2

2

I

I

I

2

I

2

2

I

2

I

2

I

2

2

I

I

I

2

2 2

I

2

2

I

I

2

I

2

I

2

I

2

1

2

for the dates on which the stars David Gill.