Comet C/2007 N3 Lulin

Comet N/2007 N3 Lulin was discovered on July 2007 by astronomers from Lulin Observatory located on Taiwan.

"Pi of the sky" automatic trigger has discovered the comet passing at pictures taken at the end of January 2008. It was found by algorithm dedicated to detection of the nova stars.

Below there are some pictures taken by us until today, which shows path of the comet through skies. Comet is in the middle of the picture unless it is near a frame border and then it cannot be inside central square.

Below there are "Pi of the Sky" images 400x400 arcmin (click at the picture to enlarge). Almost all of them were taken during a morning scan (and then picture is an average of 3 frames), but some were taken during normal observation and then there is an average of 20 frames, and this is written in comments.

In the table there is time and coordinates for each picture:

Some of our observations
HJD	Date	UT	α [h]	α [hh mm ss]	δ [°]	δ [° ′ ″]	Comment
2454856.8431	2009.01.25	8:16:46	15.53558853	15 32 08.12	-18.25304787	-18 15 10.97
2454857.8234	2009.01.26	7:48:16	15.49911957	15 29 56.83	-18.12206581	-18 07 19.44
2454858.8202	2009.01.27	7:43:25	15.46007642	15 27 36.28	-17.99271708	-17 59 33.78
2454859.8168	2009.01.28	7:38:20	15.41784911	15 25 04.26	-17.83740893	-17 50 14.67
2454860.8300	2009.01.29	7:57:03	15.37199915	15 22 19.20	-17.67775826	-17 40 39.93
2454862.8263	2009.01.31	7:51:13	15.27097208	15 16 15.50	-17.30463829	-17 18 16.70
2454863.8226	2009.02.01	7:45:42	15.21530048	15 12 55.08	-17.10055145	-17 06 1.99
2454864.8002	2009.02.02	7:13:11	15.15627556	15 09 22.59	-16.86443785	-16 51 51.98	clouds
2454865.8014	2009.02.03	7:14:32	15.08985721	15 05 23.49	-16.60553872	-16 36 19.94
2454866.8263	2009.02.04	7:50:07	15.01743229	15 01 02.76	-16.30952717	-16 18 34.30
2454867.8183	2009.02.05	7:38:19	14.94151385	14 56 29.45	-15.99329830	-15 59 35.87	near the α Lib (Zubenelgenubi)
2454868.8094	2009.02.06	7:25:14	14.85914061	14 51 32.91	-15.64271883	-15 38 33.79	near the α Lib (Zubenelgenubi)
2454869.7994	2009.02.07	7:10:25	14.76896584	14 46 08.28	-15.25266642	-15 15 9.60	near the α Lib (Zubenelgenubi)
2454870.7944	2009.02.08	7:02:53	14.6635	14 39 48.6	-14.78905	-14 47 20.58
2454872.8045	2009.02.10	7:16:38	14.44439680	14 26 39.83	-13.76539114	-13 45 55.41
2454879.8134	2009.02.17	7:26:07	13.24970609	13 14 58.94	-7.38162557	-7 22 53.85
2454880.8074	2009.02.18	7:17:03	13.01512588	13 00 54.45	-5.98401360	-5 59 2.45
2454882.8124	2009.02.20	7:23:10	12.48706877	12 29 13.45	-2.76100409	-2 45 39.61
2454883.8050	2009.02.21	7:12:09	12.20172534	12 12 06.21	-0.99664076	-0 59 47.91
2454884.8144	2009.02.22	7:25:13	11.89618394	11 53 46.26	0.91979424	0 55 11.26	near the β Vir (Zavijava)
2454885.8167	2009.02.23	7:28:14	11.58368363	11 35 01.26	2.87770540	2 52 39.74
2454886.8147	2009.02.24	7:35:07	11.26583943	11 15 57.02	4.81758790	4 49 3.32	Saturn and Sigma Leo in the upper left corner
2454887.8141	2009.02.25	7:24:09	10.94639814	10 56 47.03	6.73946040	6 44 22.06
2454888.8556	2009.02.26	8:23:52	10.61855672	10 37 06.80	8.64323846	8 38 35.66	average of 20 frames
2454889.6186	2009.02.27	2:42:39	10.38121080	10 22 52.36	9.97003059	9 58 12.11
2454890.8190	2009.02.28	7:31:18	10.02423394	10 01 27.24	11.87992451	11 52 47.73
2454891.6236	2009.03.01	2:50:03	9.79703549	9 47 49.33	13.02329926	13 01 23.88
2454891.8201	2009.03.01	7:33:06	9.74258147	9 44 33.29	13.29122007	13 17 28.39
2454892.6262	2009.03.02	2:54:06	9.52878328	9 31 43.62	14.31505381	14 18 54.19
2454893.6208	2009.03.03	2:46:34	9.28053310	9 16 49.92	15.43060513	15 25 50.18
2454894.6174	2009.03.04	2:41:58	9.04943198	9 02 57.96	16.41249900	16 24 45.00
2454895.7629	2009.03.05	6:11:50	8.81116302	8 48 40.19	17.34279827	17 20 34.07	average of 20 frames
2454904.6164	2009.03.14	2:43:41	7.58316741	7 34 59.40	20.99067066	20 59 26.41
2454906.6587	2009.03.16	3:45:10	7.41590930	7 24 57.27	21.33477314	21 20 5.18	the comet near the right border of the red square
2454908.6617	2009.03.18	3:50:03	7.27600506	7 16 33.62	21.53221456	21 31 55.97	the comet a little bit above the frame center