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Date: Fri, 7 May 1993 15:34:06 +0200
From: granslo@argo.uio.no
Subject: SN 1993J - NAS.VSS Report No. 7
Norwegian Astronomical Society - Variable Star Section
VISUAL OBSERVATIONS OF SUPERNOVA 1993J IN M81 - REPORT NO. 006 (1993 MAY 7)
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YYYY MM DD.DDD OBSERVATION MAGN CL INSTRUM. OBSERVER
1993 04 03.838 E-1.5;F+3 11.8 1 M316,62x Midtskogen, O.
1993 04 09.902 D-5;E+1 11.4 1 M150 Midtskogen, O.
1993 04 10.845 D-6;E+1 11.5 1 M316,62x Midtskogen, O.
1993 04 11.903 D-1;E+5 11.0 1 M316,62x Midtskogen, O.
1993 04 12.884 103W-4.5;D+2 10.6 2 M316,62x Midtskogen, O.
1993 04 13.892 103W-3;D+2.5 10.6 1 M316,62x Midtskogen, O.
1993 04 14.904 103W-4;D+1 10.7 1 M316,62x Midtskogen, O.
1993 04 17.910 103W-3;D+2.5 10.5 1 M316,62x Midtskogen, O.
1993 04 18.915 103W-2;D+3 10.5 1 M316,62x Midtskogen, O.
1993 04 19.892 103W-4;D+0.5 10.7 1 M316,62x Midtskogen, O.
1993 04 26.920 D-4;E+2 11.3 1 M316,130x Midtskogen, O.
1993 04 27.936 E-2;F+3 11.8 1 M316,130x Midtskogen, O.
1993 04 29.942 E-1;F+3 11.7 2 M316,130x Midtskogen, O.
1993 04 30.927 3-4;Ar-6;E-1;F+2;6+2 11.9 1 C203,133x Dahle, H.
1993 04 30.978 E-1.5;F+2.5 11.8 2 M316,130x Midtskogen, O.
1993 05 01.008 Ar-5;E-2;F=V 11.9 2 C203,123x Granslo, B. H.
1993 05 01.978 Ar-5;E-1;F=V;G+4 11.9 2 C203,123x Granslo, B. H.
1993 05 01.979 Ar-7;F=V 12.0 2 C203,133x Dahle, H.
1993 05 02.903 Ar-8;3-4;F=V 12.0 1 C203,133x Dahle, H.
1993 05 05.941 E-5;F-3;G=V 12.3 1 C203,133x Dahle, H.
1993 05 05.968 E-5;F-2;G+2 12.2 2 C203,123x Granslo, B. H.
Time system is Universal Time. Magnitudes are calculated from the Pogson's
step method and the average magnitude is listed. CL = class: estimated
accuracy of observation; 1 = good (+/- 0.1 mag.), 2 = fair (+/- 0.2 mag.),
3 = poor (+/- 0.3 mag.). Instrument (aperture in mm): C = Schmidt-Cassegrain.
M 0 reflector. Comparison stars: 103W = 10.3; D = 10.7 (var?), 3 = 11Ar = 11.40,
E = 11.78, F = 11.90, G = 12.45. Identifications: The Astronomer (D, E, F, G),
Richmond (Ar), Corwin (3, 6), Thompson-Bryan chart (103W). Magnitudes: AAVSO
mv (103W, D), Corwin V (E, F, G, 3, 6), Richmond V (Ar). Star Ar is located
65" N and 23" E of star F. Contributing observers:
Haakon Dahle, Vestbrynet 12, N-1176 Oslo, Norway.
Bjorn H. Granslo, Nordahl Griegsvei 22 A, N-1472 Fjellhamar, Norway.
Oernulf Midtskogen, Svenskerud 127, N-3408 Tranby, Norway.
Bjorn H. Granslo
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