2018/03/25T20:49:09 から 21:11:18(+30s) まで
30秒*20=10分00秒 ISO3200 長秒時露光のノイズ低減：する t-JST=+09秒
Mewlon210FR/2050mm + LPS-P2 + 60D +EM-200Temma2
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CBAT "Transient Object Followup Reports" TCP J07134590-2112330 TCP J07134590-2112330 2018 03 24.4964* 07 13 45.90 -21 12 33.0 12.0 U CMa 9 1 2018 03 24.4964 Yuji Nakamura, Kameyama, Mie, Japan, reports his discovery of this TCP (mag 12.0) in CMa on a CCD frame taken on 2018 Mar 24.4964 UT (limiting mag 15.1) using a 10cm reflector F3.0 telescope. He confirmed this object on other 3 frames taken on the same night. The object was not shown on a frame taken on 2018 Mar 17.5107 UT (limiting mag 15.4). 2018 03 24.79 USNO-B1.0 0687-0122255 (07 13 45.83 -21 12 27.3, R= 19.6 mag; G= 20.21 mag in Gaia DR1) is 5.4" away, the nearest Pan-STARRS1 source (07 13 45.84 -21 12 31.3, g= 21.55 mag) is 1.9" away from the transient's position. No previous outbursts or eruptions were recorded by the ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) in 2012 February and since 2014 December; latest available observation: 2018 March 23.153 UT, V= 15.5 mag, contaminated by a 15 mag star 9" away): https://asas-sn.osu.edu/light_curves/b38524a4-4dff-49e8-af69-18d14ce7406a --- Patrick Schmeer (Saarbrucken-Bischmisheim, Germany) 2018 03 24.831 Visual magnitude estimate by P. Schmeer, Bischmisheim, Germany: 2018 Mar. 24.831 UT, 12.8 (203-mm Schmidt-Cassegrain telescope). 2018 03 25.4111 Photometry results were V=12.14, Rc=11.54 and Ic=11.01. Seiichiro Kiyota (Kamagaya, Japan) |
2018年03月25日
