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[vsnet-history 1021] Nova Aql 1993 (NAS.VSS)


Date: Sun, 23 May 1993 21:57:59 +0200
From: granslo@argo.uio.no
Subject: Nova Aql 1993 - NAS.VSS Report No. 2

         Norwegian Astronomical Society - Variable Star Section

     OBSERVATIONS OF NOVA AQUILAE 1993 - REPORT NO. 002 (1993 May 23)
     ================================================================

YYYY MM DD.DDD  OBSERVATION                MAG  CL INSTRUM.   OBSERVER
1993 05 17.95   Bb-2;At+5                  7.9     M316,62x   Midtskogen, O.
1993 05 17.969  Bb-6;At+5                  8.1  1  C203,80x   Granslo, B. H.
1993 05 17.991  Ab-8;At+4                  8.0  1  C203,80x   Dahle, H.
1993 05 18.004  Bb-5;At+5                  8.1  1  C203,80x   Granslo, B. H.
1993 05 18.031  Bb-6;At+5;Db+8             8.1  1  C203,80x   Granslo, B. H.
1993 05 18.990  Bb-5;Ag-1;At+6;Db+8        8.0  1  C203,80x  *Granslo, B. H.
1993 05 19.019  Ab-8;Bb-2;At+6             7.8  1  C203,80x  *Dahle, H.
1993 05 20.006  Ab-8;Bb-2;Ag=V;At+8        7.8  1  C203,80x  *Granslo, B. H.
1993 05 20.949  Bb-2;At+5                  7.9  2  C203,80x  *Dahle, H.
1993 05 22.959  Ab-6;Bb=V;Cb+6             7.6  1  C203,80x  *Granslo, B. H.

Time system is Universal Time. Magnitudes were calculated from Pogson's step
method. 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): M = reflector, C = Schmidt-Cassegrain.

New or revised observations since Report No. 1 (1993 May 18) are marked with
an asterisk (*).

Comparison stars: 

Ident   R.A. (2000.0) Decl.       V   Sp.   SAO    Seq.
        h  m   s     o  '  "
 Ab    19 12 03.3  + 2 37 22    6.93  B9   124376  HIC
 Bb    19 09 01.8  + 1 21 09    7.56  F5   124317  HIC
 Ag    19 07 46.3  + 1 27 06    7.8   A2   123400  HIC
 Cb    19 17 14.8  + 1 03 34    8.27  B1   124467  HIC
 At    19 12 22.6  + 1 22 07    8.60  A0   124380  TA
 Db    19 09 42.1  + 1 14 05    8.89  G5   124332  HIC

Sequences: HIC = The Hipparcos Input Catalogue; TA = The Astronomer
Electronic Circular No. 742 (magnitude from Guide Star Catalog).
Stars Ab, Bb, Cb and Db are from a list supplied by H. Bengtsson.

The nova is located at RA = 19h 13m 07s, Decl. = +1d 34.5' (2000.0).

Observers: Haakon Dahle (Oslo, Norway); Bjorn H. Granslo (Fjellhamar,
Norway). Ornulf Midtskogen (Tranby, Norway).

                                                        Regards,
                                                    Bjorn H. Granslo

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