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[vsnet-obs 40592] R CrB, SS Cyg, Chi Cyg (2002 April, ABG)




Norwegian Astronomical Society - Variable Star Section

Variable star observations for 2002 April 04-28 UT

Observer: Birger Andresen (ABG).
Location: Trondheim, Norway.
Instruments: 7x50 binoculars and 70mm TeleVue Ranger refractor at 24X.
Magnitude references: Tycho-1, Tycho-2 w/Bessel and Henden.
Observations: Visual, Argelander step estimates.
Conditions: Good

Object    YYYYMMDD(UT)    Mag  Obs Instrument  Ref    Estimates  (Class)
CRBR      20020404.865    6.2  ABG  B7x50     TYC1-V  B4V3C          (1)
CRBR      20020407.892    6.2  ABG  B7x50     TYC1-V  B4V3C          (1)
CRBR      20020413.942    6.2  ABG  B7x50     TYC1-V  B5V3C          (1)
CRBR      20020414.883    6.2  ABG  B7x50     TYC1-V  B5V3C          (1)
CRBR      20020420.917    6.2  ABG  B7x50     TYC1-V  B4V3C          (1)
CRBR      20020428.938    6.3  ABG  B7x50     TYC1-V  B5V2C          (1)
CYGSS     20020413.993  <11.2  ABG  L70;24X   Henden  V>11.2         (1)
CYGSS     20020421.031   12.0  ABG  C280;140X Henden  K2V3L          (1)
CYGchi    20020407.930    5.8  ABG  B7x50     TYC2-V  A7V1B;V3C      (1)
CYGchi    20020413.988    6.2  ABG  B7x50     TYC2-V  B2V2T;V=C      (1)
CYGchi    20020428.944    7.0  ABG  L70;24X   TYC2-V  T5V2E          (1)

Comparison stars for R CrB (V-magnitudes from Tycho-1):
A = rho CrB       ( 5,39 mag)   B = ups CrB       ( 5,80 mag)
C = TYC 2032-195  ( 6,46 mag)   D = TYC 2040-1324 ( 7,11 mag)
E = TYC 2039-642  ( 7,43 mag)   F = TYC 2040-1138 ( 7,81 mag)
G = TYC 2039-401  ( 8,67 mag)   H = TYC-2040-1749 ( 9,34 mag)
I = TYC 2039-242  ( 9,94 mag)   J = TYC 2039-1040 (10,56 mag)
K = TYC 2039-1198 (10,94 mag)   X = TYC 2036-276  ( 8,06 mag)

Comp. stars for SS Cyg (V-mags. from Tycho-2 w/Bessel and Henden):
A = TYC 3196-1605 ( 7,81 mag)   B = TYC 3196-1137 ( 8,31 mag)
C = TYC 3196-1988 ( 8,69 mag)   D = TYC 3196-2202 ( 9,06 mag)
E = TYC 3196-1227 ( 9,40 mag)   F = TYC 3196-0785 ( 9,75 mag)
G = TYC 3196-1019 (10,31 mag)   H = TYC 3196-0857 (10,90 mag)
K = GSC 3196-0829 (11,86 mag)   L = GSC 3196-0831 (12,28 mag)
X = TYC 3196-1427 ( 7,52 mag)   Y = TYC 3196-701  ( 8,49 mag)
Z = TYC 3195-1324 ( 6,81 mag)

Comparison stars for Chi Cygni (V-magnitudes from Tycho-2):
A = 17 Cyg        ( 5,01 mag)   B = TYC 2660-4230 ( 5,93 mag)
C = TYC 2660-4229 ( 6,19 mag)   D = TYC 2677-0206 ( 6,75 mag)
E = TYC 2673-0060 ( 7,27 mag)   F = TYC 2660-2556 ( 7,49 mag)
G = TYC 2673-210  ( 7,90 mag)   H = TYC 2673-4170 ( 8,21 mag)
I = TYC 2673-117  ( 8,44 mag)   J = TYC 2673-196  ( 8,82 mag)
K = TYC 2673-4361 ( 9,19 mag)   L = TYC 2673-4474 ( 9,49 mag)
M = TYC 2673-4455 ( 9,65 mag)   N = TYC 2673-172  (10,02 mag)
O = TYC 2673-1766 (10,48 mag)   P = TYC 2673-2709 (10,51 mag)
R = TYC 2673-2569 (11,16 mag)   S = GSC 2673-1868 (11,60 mag)
T = TYC 2673-0065 ( 6,47 mag)   U = Eta Cyg       ( 3,89 mag)