David W. Bishop: 120524_NGC4424_SN2012cg_560mm_f7_30x300s_Zilch_marker
David W. Bishop: 120524_NGC4424_SN2012cg_560mm_f7_30x300s_Zilch_marker
David W. Bishop: 120527_M95_SN2012aw_560mm_f7_8x300s_ZILCH
David W. Bishop: 110923_M101+SN2011fe_7x300s_560mm_f7_Zilch
David W. Bishop: 110924_M51+SN2011dh_12x300s_560mm_f7_Zilch
David W. Bishop: 111001_M101_SN2011fe_7x300s_560mm_f7_Zilch