David's Astronomy Pages Variable Stars Project (2) (2002-2003) Projects (Main)   Home Page   Images 2002-09-12

This page comprises baseline reference images and rough light curves for around 19 variable stars in constellations Andromeda, Lacerta and Pegasus.   The images were taken with a CCD without IR blocking and therefore please note that for red, Mira type variables, the magnitudes calculated are generally much brighter than Visual Magnitudes.    Nevertheless the variable trends are distinctly evident.

For detailed preliminary discussion and analysis please see CCD Images Session 32 (2002-11-24)  

The baseline Images shown below were taken on 2002-10-02 (Peg, And, Lac).  Light Curves show data till 2003-01-25.

 R And

R And Mira-type variable (Andromeda) Catalog  : Variation +5.8 to +14.9, Period 409.33 days Alt Name : HIP 1901, SAO 53860, GSC 2783:2031

R And, baseline image, 5 sec exposure (north down)

2002-10-02  23:34h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28160-62)

2002-10-02  23:36h UT CCD Image, 3 x 30 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28166-68)

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RX And

RX And  UGZ-type variable (Andromeda) Catalog : Variation +10.3 to +14.0, Period (14) days Alt Name : GSC 2807:1623

NSV 00389 suspected variable (Andromeda) Catalog  : ? Variation +11.0 to +12.5.  Period  ?  days Alt Name : GSC 2807:675

RX And, baseline image, 10 sec exposure (north down)

2002-10-03 00:03h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28199-201)

2002-10-03  00:04h UT CCD Image, 4 x 30 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28202-06)

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ST And

ST And,  SRa-type variable (Andromeda) Catalog  : Variation +7.7 to +11.8, Period 328.34 days Alt Name : GSC 2778:765, HIP 116681

ST And, baseline image,  5 sec exposure (north down)

2002-10-03  00:11h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28211-13)

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SW And

SW And,  RRab-type variable (Andromeda) Catalog  : Variation +9.14 to +10.09, Period 0.44228 days Alt Name : GSC 1737:1702, HIP 1878

SW And, baseline image,  5 sec exposure (north down)

2002-10-03  00:18h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28223-25)

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U And

U And,  Mira-type variable (Andromeda) Catalog  : Variation +8.9 to +15.0, Period 346.55 days Alt Name : GSC 2804:1144

U And, baseline image,  5 sec exposure (north down)

2002-10-02  23:44h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28172-74)

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W And

W And,  Mira-type variable (Andromeda) Catalog  : Variation +6.7 to +14.6, Period 395.93 days Alt Name : GSC 2842:951, HIP 10687

Note there  is a suspicion that the star GSC 2842:1765  is the suspected Variable Star NSV 771 (+11.5)

W And, baseline image,  5 sec exposure (north down)

2002-10-02  23:50h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28184-86)

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UZ And (and EK And)

UZ And,  Mira-type variable (Andromeda) Catalog  : Variation +9.1 to +15.6, Period 314.3 days Alt Name : GSC 2808:2063

EK And,  SRa-type variable (Andromeda) Catalog  : Variation +10.3 to +11.4, Period 185 days Alt Name : GSC 2808:2027

UZ And/EK And, baseline image,  5 sec exposure (north down)

2002-10-03  00:21h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28227-29)

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RS Lac

RS Lac,  Mira-type variable (Andromeda) Catalog  : Variation +9.6 to +12.5, Period 237.26 days Alt Name : GSC 3211:1056

RS Lac, baseline image,  5 sec exposure (north down)

2002-10-02  23:14h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28128-30)

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RV Lac (and RW Lac)

RV Lac,  SRb type variable (Lacerta) Catalog  : Variation +11.0 to +12.7, Period 57 days Alt Name : GSC 3269:2273, HIP 112292

RW Lac,  EA/DM type variable (Lacerta) Catalog  : Variation +10.40 to +11.0, Period 10.369 days Alt Name : GSC 3269:740

RV Lac, baseline image,  5 sec exposure (north down)

2002-10-02  23:25h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28143-45)

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RY Lac

RY Lac,  SRb type variable (Lacerta) Catalog  : Variation +12.5 to +13.2, Period ? Type : SRb

RY Lac, baseline image,  10 sec exposure (north down)

2002-10-02  23:20h UT CCD Image, 3 x 10 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28137-39)

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S Lac

S Lac,  Mira type variable (Lacerta) Catalog  : Variation +7.6 to +13.9, Period 241.5 days Type : M

S Lac, baseline image,  10 sec exposure (north down)

2002-10-02  23:06h UT CCD Image, 3 x 10 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28119-21)

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R Peg

R Peg Mira-type variable (Pegasus) Catalog  : Variation +6.9 to +13.8, Period 378.1 days Alt Name : HD 218292, SAO 108403

R Peg, baseline image 2 sec exposure (north down)

2002-10-02  22:15h UT CCD Image, 3 x 2 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28022-24)

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S Peg

S Peg Mira-type variable (Pegasus) Catalog  : Variation +6.9 to +13.8, Period 319.22 days Type : M Alt Name : HIP 115242 , SAO 128130

S Peg, baseline image 5 sec exposure (north down)

2002-10-02  22:21h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28026-28)

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RU Peg

RU Peg,  Mira-type variable (Andromeda) Catalog  : Variation +9.0 to +13.2, Period 74.3 days

RU Peg, baseline image, 5 sec exposure (north down)

2002-10-02  22:40h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28065-67)

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RV Peg

RV Peg,  Mira-type variable (Andromeda) Catalog  : Variation +9.0 to +15.5, Period 396.8 days Type M

RV Peg, baseline image, 5 sec exposure (north down)

2002-10-02  22:49h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28077-79)

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T Peg

T Peg,  Mira-type variable (Andromeda) Catalog  : Variation +8.4 to +15.4, Period 379.4 days Type M. Alt Name : GSC 1144:990

Reference Star has an adjusted Mag of +9.10  (the combined magnitude of +9.14 and +12.75)

T Peg, baseline image, 5 sec exposure (north down)

2002-10-02  22:27h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28036-38)

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TW Peg

TW Peg,  SRb-type variable (Andromeda) Catalog  : Variation +7.5 to +8.4, Period 929.3 days Alt Name : GSC 2216:1365, SAO 90201, HIP 108928

TW Peg, baseline image, 2 sec exposure (north down) No suitable reference star within CCD frame. Magnitude difference between offset stars and  variable star is really too large for tracking the +7.5 to +8.4 variation.

2002-10-02  22:58h UT CCD Image, 3 x 2 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28100-02)

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W Peg

W Peg,  Mira-type variable (Andromeda) Catalog  : Variation +7.6 to +13.0, Period 345.5 days Alt Name : GSC 2245:115, HIP 115188

W  Peg, baseline image, 10 sec exposure (north down) Control 2 initially selected as Reference, but it seems  to be dimmer than its catalog Mag suggests Note : Lenticular Galaxy UGC 12515 (Catalog Mag +13.9)

2002-10-02  22:31h UT CCD Image, 3 x 10 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28048-50)

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Z Peg

Z Peg,  Mira-type variable (Andromeda) Catalog  : Variation +7.6 to +13.0, Period 345.5 days Alt Name : GSC 2245:115, HIP 115188

Z  Peg, baseline image, 5 sec exposure (north down) Variable star could be better framed to show one of  the  two brighter control star which are present to north and south of image

2002-10-02  22:35h UT CCD Image, 3 x 5 sec exposure (2x2 binning) 11.4 x 7.6 arc min  (#28055-57)

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