[vsnet-obs 36216] 2001 Oct 4-6 UT (GRL)

["Bjorn H. Granslo" <b.h.granslo@astro.uio.no>]

Norwegian Astronomical Society - Variable Star Section

Variable star observations from October 4-6 UT

Observer: Bjorn H. Granslo (GRL).
Locations: Blindern, Oslo & Fjellhamar, Norway.
Instruments: 20.3-cm f/10 SCT (C203), 15.2-cm f/5 reflector (M152),
  7x50 binoculars (B7x50), naked eye (NE).
Magnitude references: V-magnitudes from HIP and Tycho-2 (via VT and
  BT); CCD-V by A. Henden, USNO and Ouda observatory; visual (mv) by
  AAVSO and BAA.VSS.
Observations: Visual, Pogson step estimates.
Conditions: Nearly clear + Moon (Oct 4-5); cloudy (Oct 6).

Data corrections [vsnet-obs 36192]:
> Object   YYYYMMDD(UT)   Mag  Obs  Instrument Ref     Remarks
> CYGSS    2001004.045    8.9  GRL  C203;100x  TYC2    Brightening
> PERAX    2001004.05    12.0  GRL  C203;100x  AAVSO
> PERTX    2001004.05    10.4  GRL  C203;100x  TYC2
> TAUSU    2001004.11    10.9  GRL  C203;100x  Ouda    Active
> ORICZ    2001004.111   12.4  GRL  C203;100x  Ouda    Outburst
> CASrho   2001004.13     4.7  GRL  B7x50      HIP

Object     YYYYMMDD(UT)   Mag  Obs  Instrument Ref     Remarks
CYGSS      20011004.045   8.9  GRL  C203;100x  TYC2    Brightening
PERAX      20011004.05   12.0  GRL  C203;100x  AAVSO
PERTX      20011004.05   10.4  GRL  C203;100x  TYC2
TAUSU      20011004.11   10.9  GRL  C203;100x  Ouda    Active
ORICZ      20011004.111  12.4  GRL  C203;287x  Henden  Outburst
CASrho     20011004.13    4.7  GRL  B7x50      HIP

New observations:
Object     YYYYMMDD(UT)   Mag  Obs  Instrument Ref     Remarks
CRBT       20011004.81   10.7  GRL  M152;60x   TYC2
OPHRS      20011004.81   11.6  GRL  M152;167x  BAA
CYGSS      20011004.896   9.5  GRL  M152;60x   TYC2    Outburst
CYGV2275   20011004.897  12.2  GRL  M152;167x  Henden  Active
PEGEF      20011004.899  11.1  GRL  M152;167x  TYC2    Outburst
CETomicron 20011005.06    3.6  GRL  NE         HIP
TAUCQ      20011005.06   10.1  GRL  C203;100x  TYC2
PERX       20011005.07    6.6  GRL  B7x50      HIP
MONT       20011005.071   6.6  GRL  B7x50      HIP
CYGR       20011006.77    9.5  GRL  C203;100x  TYC2
PEGEF      20011006.771  11.1  GRL  C203;100x  TYC2    Outburst
VULV       20011006.78    9.6  GRL  C203;100x  TYC2
CYGV2275   20011006.785  12.2  GRL  C203;100x  Henden  Active
CYGSS      20011006.804   8.6  GRL  C203;100x  TYC2    Outburst
ANDZ       20011006.81    9.9  GRL  C203;100x  TYC2    Active

Observation of V2275 Cyg from Oct. 4.897: T-5; U+2 (class 2).
Observation of V2275 Cyg from Oct. 6.785: T-5; U+2 (class 2).
Comparison stars (Henden CCD-V): T = GSC 3596-0168 (V=11.70);
U = GSC 3592-0767 (V=12.39).

Observation of EF Peg from Oct. 3.914: a-3; c+1 (class 1 w/M152;107x).
Observation of EF Peg from Oct. 4.899: b-1; c+1 (class 2).
Observation of EF Peg from Oct. 6.771: b-1; c+1 (class 2).
Comparison stars (magnitudes derived from Tycho-2 photometry):
a = TYC 1117-1896 (V = 10.68); b = TYC 1117-1605 (V = 11.00);
c = TYC 1117-2065 (V = 11.20).

                                  Yours sincerely,
                                  Bjorn H. Granslo

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