| OCR Text |
Show 45 Normal equations. 0 = _ 4 . 6 8 + 11.00 i t- 3.09 a- 2.80 c it= - 0-. 525 0 = + 4 2 . 8 0 - 3 . 0 9 at+ 14.42 a + 5.64 c a= - 2 » . 858 0 = + 4 3 . 1 7 - 2L80 d « + 5.64 a+ 49.98c c= + 0-. 570 Adopted azimuth, - 10*. 00; whole azimuth of the instrument, - 12*. 658. Austin, Xev. f June 29,1871. Name of atar. { Clamp. I A. m. *. 14 27 40. 83 34 16.22 38 5a 40 43 19.20 50 57.08 i 56 43.98 15 3 18.96 9 38.22 20 45.32 28 50.50 37 3a 08 Mean for 15h 0 ™ local sidereal time . 5 Urase M in o r i s . , i E. * Bootis .1 t Bootis ; • a Libra • 0 Urate Minoris..• 0 Bootis 46 Cepbei, L . C W. 0 Librae >* " Crise Minoria.. a Coronie a Serpentis * B 8 oA t. - 0.41 - 10.64 - 0.20 + 1. 83 - 0.31 - 0.20 - 0.16 - 0.20 + 0.43 - 0.22 - a 86 + 1.05 + 3.90 - 10.00 - 0.18 + 18.57 + 3.62 - a 16 - o . 3 5 ; + i. io - 0.31 + 2.48 cC 8. - 1.11 - 0.28 - 0.30 - 0.27 - 1.00 - 0.40 - 1.19 + 0.27 + 0.87 + 0.29 + 0.27 AR. k. m. f. 14 27 2a 67 34 17.57 38 58.84 43 22.63 50 45.90 56 43.20 3 36.77 9 41.89 20 37.17 28 51.54 37 32.49 15 h. m. 14 27 34 39 43 51 57 15 3 10 21 29 37 52.32 41.00 22.04 46.02 9.25 6.62 59.96 5.45 0.04 15.07 56.36 A T m. 8. f 0 23.65 23.43 23.20 23.39 23.35 23.42 2a 19 23.56 22.87 2a 53 + 0 2a 87 + 0 23.405 Normal equations. 0 = + 1.48 + 11.00 dt+ 0.78 o+ 10.86c 0 = - i a 5 7 + 0 . 7 8 df+ 31.61 a+ 2.91c a = - 0 » . 415 0 = - 15.71 + 10.86 6t+ 2.91 a+ 72.60c c= - 0-. 263 Adopted azimuth, + 5*. 00: whole azimuth of the instrument, + 4'. 585. The following table shows the corrections and rates for the sidereal chronometer: Negus 1344. Date. Local sidereal time. ( Jorrection of Adopted hourly chronometer. rate. Jnne 16,1871 . June 26.1871 . Jane 29.1871 . h. 17.0 U .7 15.0 + 0 31.612 + 0 29.475 + 0 2a 405 8. + 0.042 + 0.070 + 0.085 The signals were sent by sonnd from the mean- time chronometer Hatton No. 288. It was compared with Negus 1344, both before and after exchange. The comparison, Juue 16,1871, made before exchange, is: h. m. 8. h. m. 8. Negus 1344 14 45 45.0 14 48 50.0 Hutton 288 8 45 37.0 8 48 41.5 and after exchange- ft. m. « . h. m. 8. Negus 1344 18 44 16.0 18 47 20.0 Hutton 288 12 43 37.0 12 46 40.5 The hourly rate of Hutton 288, derived from these comparisons, would be 78.773; this first comparison has to be rejected, as there is evidently a mistake in it, as shown by the comparison below. Both chronometers were compared again the next morning. Negus 1344 6* 44 37*. 0 Hutton 288 0 41 59.5 The rate derived from this comparison and that made after exchange is 98.8561, and is used for the determination of the change of Hutton 288 against sidereal time. |
