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[vsnet-obs 32141] R CrB observations 2000 Dec 29 - 2001 Feb 6 (GRL)
- Date: Wed, 07 Feb 2001 00:36:22 +0100
- To: vsnet-obs@kusastro.kyoto-u.ac.jp
- From: "Bjorn H. Granslo" <b.h.granslo@astro.uio.no>
- Subject: [vsnet-obs 32141] R CrB observations 2000 Dec 29 - 2001 Feb 6 (GRL)
- CC: gp@star.sr.bham.ac.uk, Lars-Trygve.Heen@ffi.no, birger.andresen@fesil.no, b.h.granslo@astro.uio.no
- Sender: owner-vsnet-obs@kusastro.kyoto-u.ac.jp
Norwegian Astronomical Society - Variable Star Section
R Coronae Borealis has shown a major brightening since early January,
2001. I report the following visual observations:
Object YYYYMMDD(UT) Mag Obs Instrum. Estimates Seq.
CRBR 20001229.18 12.2: GRL L70;69x V=W (3) [faint] BAA
CRBR 20010103.12 12.0 GRL L70;69x U-2;W+2 (2) BAA
CRBR 20010114.10 9.5 GRL C203;123x 10-2;P-1;11+4 (1) TYC2
CRBR 20010116.06 9.1 GRL C203;123x M-3;10+1 (2) TYC2
CRBR 20010130.07 7.3 GRL L70;24x E-8;G+1 (2) HIP
CRBR 20010201.15 7.1 GRL B7x50 E-6;G+3 (2) HIP
CRBR 20010204.09 7.0 GRL B7x50 E-5;G+4 (1) HIP
CRBR 20010206.15 6.7 GRL L70;24x E-2;G+7 (2) HIP
Comparison stars (V magnitudes from HIP and TYC2, visual from BAA):
E = 6.46 (HIP), G = 7.43 (HIP), M = 8.86 (TYC2), 10 = 9.23 (TYC2),
P = 9.51 (HIP), 11 = 9.96 (TYC2), U = 11.79 (BAA), W = 12.20 (BAA).
Observer: B. H. Granslo (Fjellhamar, Norway). Instruments: 203-mm SCT,
70-mm refractor, 7x50 binoculars. Observations are Pogson step
estimates.
Yours sincerely,
Bjorn H. Granslo
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