SN in NGC 2357 = PSN J07174570+2320406

 

(1) 2015 May. 09.51874 UT


PSN J07174570+2320406
2015 May. 09.51874 UT, Mag.=14.8 (R mag for the reference stars from UCAC-4), on six stacked 120-s frames (limit mag.= 16.5) using a 0.30-m f/7.0 Cassegrain  + SBIG ST-1001E camera (+ I filter) at Osaki Lifelong Learning Center, Japan. Observer Y. Suzuki, T. Yusa, N. Wada, S. Tsunoda and K. Chiba.


 


 


          

 

(2) 2015 May 09.490 UT


PSN J07174570+2320406
2015 May 09.490 UT, V= 14.3, R =14.3 (reference stars from UCAC-4), on each three stacked 120-s frames
using 0.30-m f/7.0 Cassegrain + SBIG ST-1001E camera at Osaki Lifelong Learning Center, Japan.
Observer T. Yusa, Y. Suzuki, N. Wada, S. Tsunoda, S. Sasaki and H. Goto.

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T. Yusa,
Osaki Lifelong Learning Center, Japan
yusastar77@ybb.ne.jp