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Date: Tue, 20 Apr 1993 16:23:57 +0200
From: granslo@argo.uio.no
Subject: Observations(?) of Nova Oph 1993
Norwegian Astronomical Society - Variable Star Section
VISUAL OBSERVATIONS OF NOVA OPHIUCHI 1993 - REPORT NO. 001 (1993 April 20)
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YYYY MM DD.DDD OBSERVATION MAG CL INSTRUM. OBSERVER
1993 04 20.08 a-13;b-7 9.4: 3 C203,123x Granslo, B. H.
1993 04 20.090 (a-10);b-8;c-6;d+2;(e+4) 9.5 2 C203,133x Dahle, H.
Time system is Universal Time. Magnitudes were calculated from Pogson's
step method. CL = class: estimated accuracy of observation; 1 = good,
2 = fair, 3 = poor. Instrument (aperture in mm): C = Schmidt-Cassegrain.
Comparison stars (magnitudes from SAO Star Catalog): a (SAO 185397) = 7.9;
b (SAO 185380) = 8.8; c (SAO 185372) = 9.1; d (SAO 185361) = 9.3;
e (SAO 185369) = 8.5. Estimates in paranthesis have not been used in
calculating the magnitude. Observering was difficult due to twilight and
low altitude. Observations may refer to the mag. 10 star located 2' W of
the nova.
Observers and observing sites: Haakon Dahle (Oslo, Norway); Bjorn H. Granslo
(Fjellhamar, Norway).
Bjorn H. Granslo
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