C/2014E2 Jacques观测和摄影渐入佳期
随着朔月的到来，黎明前月光的影响彻底消失，直到8月中旬再次满月之前，C/2014E2 Jacques继续快速拉开和太阳的角距，亮度下降缓慢，彗星观测渐入佳期。以下是7月25日几张国外拍摄的照片：
根据到目前观测资料拟合的光度曲线和修正的星历表：
Ephemeris of comet C/2014 E2 Jacques
日期Top R.A.Top DecR (AU)距离El ? Mag
26 七月 201405h 16m 50.2s+32°28' 08"0.82261.192342.86.2
27 七月 201405h 14m 49.9s+33°09' 15"0.83451.168544.26.3
28 七月 201405h 12m 45.0s+33°51' 53"0.84671.144645.76.3
29 七月 201405h 10m 34.6s+34°36' 10"0.85911.120647.16.3
30 七月 201405h 08m 18.1s+35°22' 12"0.87171.096448.66.4
31 七月 201405h 05m 54.5s+36°10' 07"0.88451.072050.06.4
01 八月 201405h 03m 22.9s+37°00' 01"0.89751.047751.56.4
02 八月 201405h 00m 42.2s+37°52' 02"0.91071.023353.16.5
03 八月 201404h 57m 51.1s+38°46' 20"0.92400.998954.66.5
04 八月 201404h 54m 48.1s+39°43' 02"0.93750.974556.26.5
05 八月 201404h 51m 31.4s+40°42' 16"0.95110.950257.86.5
06 八月 201404h 47m 59.1s+41°44' 13"0.96490.926159.46.5
07 八月 201404h 44m 08.7s+42°49' 00"0.97880.902161.16.6
08 八月 201404h 39m 57.7s+43°56' 45"0.99280.878362.86.6
09 八月 201404h 35m 22.6s+45°07' 36"1.00690.854864.56.6
10 八月 201404h 30m 19.7s+46°21' 39"1.02110.831666.36.6
11 八月 201404h 24m 44.2s+47°38' 58"1.03530.808868.26.6
12 八月 201404h 18m 30.8s+48°59' 33"1.04970.786570.16.6
13 八月 201404h 11m 32.7s+50°23' 21"1.06410.764672.06.7
14 八月 201404h 03m 41.9s+51°50' 11"1.07860.743474.06.7
15 八月 201403h 54m 48.7s+53°19' 45"1.09310.722876.06.7
16 八月 201403h 44m 41.5s+54°51' 33"1.10770.703078.16.7
17 八月 201403h 33m 06.5s+56°24' 47"1.12240.684180.36.7
18 八月 201403h 19m 47.3s+57°58' 21"1.13710.666182.56.7
19 八月 201403h 04m 25.6s+59°30' 39"1.15180.649284.86.7
20 八月 201402h 46m 41.3s+60°59' 33"1.16650.633587.16.7
21 八月 201402h 26m 15.4s+62°22' 15"1.18130.619189.56.8
22 八月 201402h 02m 53.0s+63°35' 15"1.19620.606191.96.8
23 八月 201401h 36m 29.9s+64°34' 25"1.21100.594794.36.8
24 八月 201401h 07m 20.3s+65°15' 18"1.22580.584996.76.8
25 八月 201400h 36m 02.5s+65°33' 43"1.24070.576899.16.8
26 八月 201400h 03m 39.5s+65°26' 28"1.25560.5707101.56.9
27 八月 201423h 31m 28.6s+64°52' 08"1.27050.5665103.86.9
28 八月 201423h 00m 44.6s+63°51' 25"1.28540.5642105.97.0
29 八月 201422h 32m 24.1s+62°26' 50"1.30030.5641108.07.0
30 八月 201422h 06m 58.3s+60°42' 13"1.31520.5660109.97.1
31 八月 201421h 44m 35.3s+58°41' 55"1.33020.5700111.77.2
01 九月 201421h 25m 07.4s+56°30' 14"1.34510.5760113.27.3
02 九月 201421h 08m 17.8s+54°11' 06"1.36000.5840114.67.4
03 九月 201420h 53m 47.0s+51°47' 53"1.37490.5939115.77.5
04 九月 201420h 41m 15.2s+49°23' 21"1.38980.6057116.67.6
05 九月 201420h 30m 24.6s+46°59' 42"1.40470.6192117.37.7
06 九月 201420h 20m 59.6s+44°38' 37"1.41960.6344117.87.8
07 九月 201420h 12m 47.0s+42°21' 22"1.43450.6511118.17.9
08 九月 201420h 05m 35.8s+40°08' 50"1.44940.6692118.28.0
09 九月 201419h 59m 16.8s+38°01' 36"1.46420.6886118.28.1
10 九月 201419h 53m 42.3s+35°59' 59"1.47910.7093118.08.2
11 九月 201419h 48m 46.1s+34°04' 12"1.49390.7310117.78.3
12 九月 201419h 44m 23.0s+32°14' 13"1.50870.7538117.38.5
13 九月 201419h 40m 28.5s+30°30' 00"1.52350.7775116.78.6
14 九月 201419h 36m 58.9s+28°51' 21"1.53830.8021116.18.7
15 九月 201419h 33m 51.3s+27°18' 06"1.55310.8275115.58.8
16 九月 201419h 31m 03.0s+25°49' 59"1.56780.8536114.78.9
17 九月 201419h 28m 31.8s+24°26' 46"1.58260.8803114.09.1
18 九月 201419h 26m 15.8s+23°08' 10"1.59730.9076113.29.2
19 九月 201419h 24m 13.3s+21°53' 55"1.61200.9354112.39.3
20 九月 201419h 22m 23.0s+20°43' 47"1.62660.9638111.59.4
21 九月 201419h 20m 43.6s+19°37' 29"1.64130.9926110.69.5
22 九月 201419h 19m 14.1s+18°34' 47"1.65591.0218109.79.6
23 九月 201419h 17m 53.5s+17°35' 27"1.67051.0513108.79.7
彗星路线图：（东经111.67，北纬29.01 凌晨4:30）
等天气好了，一定得至少观测一次，好久没见过彗星了。 用20cm口径APO拍的吧，不知道国内有没有这么大口径价格28万多人民币的APO
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