------------------------------------------------------------------- THE ASTRONOMER Charts Sequence Notes No 108 2002 Feb 14 11.07UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074 INTERNET: GUY@TAHQ.DEMON.CO.UK GMH at AST.STAR.RL.AC.UK WORLD WIDE WEB http://www.theastronomer.org ------------------------------------------------------------------- SUPERNOVA 2002ap IN MESSIER 74 Since the issue of the chart and sequence on CSN 107, Arne Henden has reported that major revisions are necessary to the original measures. Broadly speaking the new comparison star values are 0.2 brighter than the original values for the brightest stars. However the faintest stars have been found to be 0.4 magnitudes brighter. There remains an inconvenient 1.1 magnitude gap between comparisons 1 and 2 which are being used by most observers to estimate the object at present but this seems unavoidable. If you have already reported magnitudes to the editor, could you please re-submit them reduced to the new sequence below. \\\\\\SN2002ap b In M74 Found by Yoji Hirose S,400,6,S O,200,200,12.4?,[20 -C, 1.6067, 15.7533,2000 P,01h 36.4m +15 45' (2000) -T,SN Seq: V by Arne Henden -G,243,182,450,350,0 -L,R,M74 -S,TA020214 SN/044.02 R,11.8,142,214,1,L R,12.9,153,219,2,B R,13.1,189,199,3,B R,13.7,177,202,4,L R,13.9,177,216,5,R R,14.4,156,227,6,A M,10,131,16,219,70 M,11,366,6,372,141,173,53 M,12,4,303,74,172,89,236,89,121,102,150,4,304,247,94 M,12,219,201,295,252,283,174,353,290,252,365 M,13,14,305,135,269,14,305,16,372,66,369,368,219,157,120 M,13,389,237,238,271,177,182,393,109,293,4 M,13,208,187,216,107,281,188,384,300,269,246,179,269 M,13,343,203 M,14,52,53,78,266,45,233,77,266,120,113,38,208,124,261 M,14,23,148,131,285,49,307,82,169,54,295,43,286,15,151 M,14,49,308,45,234,43,285,54,294,250,101,176,178,332,162 M,14,185,92,384,106,395,182,250,156,198,174,344,117,326,252 M,14,201,273,381,67,178,179,359,296,201,300 M,14,326,242,266,164,256,174,294,389,382,326,277,336,258,383 M,14,368,396,234,371,211,345 M,15,15,29,14,55,25,256,22,4,37,48,69,185,40,274 M,15,94,304,49,364,8,211,4,359,36,335,124,373,164,23 M,15,185,2,326,14,150,44,280,71,352,304,228,81,286,184 M,15,373,221,178,239,308,172,274,399,267,259,385,317,252,187 M,16,73,90,55,270,81,307,73,77,357,182,352,149,214,299 E,121 ////// Basic chart automatically generated by CHART ver 1.6 Guy M Hurst