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Date: Mon, 10 May 1993 17:17:10 +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. 007 (1993 May 10)
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YYYY MM DD.DDD OBSERVATION MAGN CL INSTRUM. OBSERVER
1993 05 07.927 E-7;F-3;G=V;H+3 12.4 1 C203,123x Granslo, B. H.
1993 05 08.003 E-6;6-5;F-5;G-1;H+5; 12.4 1 C203,133x Dahle, H.
130+5
1993 05 08.963 F-6;G-2;H+4;130+4 12.5 1 C203,133x Dahle, H.
1993 05 08.989 E-7;F-3;G-1;H+4 12.4 1 C203,123x Granslo, B. H.
1993 05 09.892 F-6;G=V 12.5 2 C203,133x Dahle, H.
1993 05 09.943 E-7;6-6;F-4;G-1;H+4 12.5 1 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.
Comparison stars: E = 11.78, 6 = 11.85, F = 11.90, G = 12.45, H = 12.89,
130 = 13.0. Identifications: The Astronomer (E, F, G, H), Corwin (6),
Thompson-Bryan chart (130). Magnitudes: AAVSO mv (130), Corwin V (E, F, G,
H, 6).
Contributing observers: Haakon Dahle, Vestbrynet 12, N-1176 Oslo, Norway;
Bjorn H. Granslo, Nordahl Griegsvei 22 A, N-1472 Fjellhamar, Norway.
Bjorn H. Granslo
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