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Date: Fri, 17 Dec 1993 20:56:59 +0200
From: granslo@argo.uio.no
Subject: N1993 Cas - NAS.VSS Report No. 5
Norwegian Astronomical Society - Variable Star Section
OBSERVATIONS OF NOVA CASSIOPEIAE 1993 - REPORT NO. 004 (1993 December 17)
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YYYY MM DD.DDD OBSERVATIONS MAG CL INSTRUM. OBSERVER
1993 12 12.045 1-7;Bd-7;Cd-5;Dd-1;Ed-1; 6.3 1 B7x50 Dahle, H.
2-1;Gd+3;Hd+1;Kd+7;Ld+9
1993 12 12.666 2-3;Ed-4;Gd+1;Kd+5 6.5 1 B7x50 Dahle, H.
1993 12 12.670 Ag-3;2-2;3+5 6.5 1 B7x35 Granslo, B.H.
1993 12 12.708 Ag-2 6.4 2 M152,49x Lauvstad, A.
1993 12 12.722 Ag-2;4+9 6.4 C203,44x Helbak, K.
1993 12 12.861 Ag=V 6.2 C203,44x Helbak, K.
1993 12 12.869 Ag(1)V(4)3;2=V 6.4 1 B7x50 Lauvstad, A.
1993 12 12.929 Ag-2;2=V;3+6 6.4 1 B7x35 Granslo, B.H.
1993 12 12.983 Ag(2)V(3)3;2-1 6.5 1 B7x50 Lauvstad, A.
1993 12 13.056 1-6;Ag-2;2=V 6.3 1 B7x50 Dahle, H.
1993 12 13.675 1-7;Ag-1;2=V;3+6 6.3 1 B7x35 Granslo, B.H.
1993 12 13.722 1-8;Ag-2;2=V 6.4 2 B7x35 Dahle, H.
1993 12 13.722 Ag=V 6.2 C203,44x Helbak, K.
1993 12 13.889 Ag=V 6.2 C203,44x Helbak, K.
1993 12 14.004 1-7;2=V;Ag-2 6.3 1 B7x50 Dahle, H.
1993 12 14.006 1-5;Ag+2;2+2 6.0 2 C203,80x Granslo, B.H.
1993 12 14.276 1-7;Ag=V;2+1;3+7 6.2 1 B7x35 Granslo, B.H.
1993 12 14.719 Ag+1;2+2 6.1 1 B7x50 Lauvstad, A.
1993 12 15.824 Ag(2)V(3)3;2-1 6.5 1 B7x50 *Lauvstad, A.
1993 12 15.976 Ag-1 6.3 2 B7x50 *Lauvstad, A.
1993 12 17.663 1-4;Ag+3;2+4 5.9 1 B7x35 *Granslo, B. H.
1993 12 17.671 1-2;Ag+4;2+7 5.7 1 B7x50 *Dahle, H.
1993 12 17.686 1(6)V(4)Ag;1-3;Ag+3 5.9 1 B7x50 *Skjaeraasen, O.
Time system is Universal Time. Magnitudes were calculated from the fractional
method or Pogson's step method. CL = class: estimated accuracy of observation;
1 = good (+/- 0.1 mag.), 2 = fair (+/- 0.2 mag.). Instrument (aperture in mm):
B = binoculars, C = Schmidt-Cassegrain reflector, M = Newtonian reflector. New
observations since report no. 4 (December 15) are marked with an asterisk (*).
Comparison stars:
Ident. R.A. (2000.0) Decl. V B-V Spec. SAO Seq. Notes
h m o '
1 23 47.03 +57 27.1 5.52 +1.66 K3 35761 HIC Ad
Bd 00 01.61 +61 13.4 5.55 +0.41 A5 21009 SC2000
Cd 00 05.10 +61 18.9 5.80 -0.09 B6 10962 SC2000
Dd 00 00.51 +59 33.6 6.19 +1.01 K0 35983 SC2000
Ag 23 41.91 +57 15.6 6.24 +1.0 G8 35682 HIC
Ed 23 48.90 +59 58.7 6.34 -0.01 A0 35794 SC2000
2 23 49.20 +58 57.8 6.36 +0.40 F2 35798 HIC Fd
Hd 23 57.56 +60 01.4 6.47 +0.01 B8 35922 SC2000
Kd 00 26.20 +56 46.8 6.68 +0.87 G5 21395 SC2000
3 23 38.37 +58 39.2 6.94 +1.02 K1 35631 HIC
Ld 23 59.46 +57 40.3 7.20 +1.60 K5 35959 SC2000
4 23 41.01 +57 50.3 7.23 +0.19 Am 35665 HIC
Sequences: HIC = The Hipparcos Input Catalogue; SC2000 = Sky Catalogue
2000.0 (1. edition). Identifications: The Astronomer (1, 2, 3, 4); H.Dahle
(Ad, Bd, Cd, Dd, Ed, Fd, Gd, Hd, Kd, Ld); B.H.Granslo (Ag).
The nova is located at RA = 23h 41m.79, Decl. = +57d 31'.0 (2000.0).
Observers: Haakon Dahle (Oslo, Norway); Bjoern H. Granslo (Fjellhamar, Nor-
way); Knut Helbak (Slependen, Norway); Andreas Lauvstad (Levanger, Norway);
Olaf Skjaeraasen (Oslo, Norway).
Bjorn H. Granslo
Director, NAS.VSS
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