David's Astronomy Pages CCD Images - Session 96 (2005-10-02) Images (S95)   Images (Main)   Home Page   Images (S97)

Notes (S00096)

- 2.9 hour session, calm (no wind)
- Sky conditions deteriorated after 2 hours and forced the session to eventually finish
- Aim of session was to record baseline images on RR Lyrae (RR Lyrae type variable) and Delta Cepheid (Cepheid variable)
 - Opportunity was taken to record images of M56 and monitor AXP stars in Cassiopeia
- An attempt was made to make a mosaic over part of Hydaes cluster (Taurus), but was unsuccessful due to developing cloud.
- More Notes

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Vega - Star

Vega (Lyra) Mag +0.03 star shows significant glare

CCD  Image  20s exposure, C filter 2005-10-02  20:40h UT (#96002)

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RR Lyrae - Variable Star

RR Lyrae (Lyra)

Approximate Colour CCD Image  Red 3 x 10s (av, R Filter),  Green 3x10s (V Filter), Blue 3x20s (B Filter) 2005-10-02  20:55h UT (#96020-28)

CCD  Image  20s exposure, C filter 2005-10-02  20:53h UT (#96018)

Reference Stars for Magnitude Estimation

CCD  Image  10s exposure, C filter 2005-10-02  21:08h UT (#96051)

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Delta Cepheid - Variable Star (Cepheid)

Delta Cepheid (Cepheus) [ Delta Cepheid is the brightest star , mag +3.6 SAO 34506 is located nearby (41 arc sec separation)  ]

CCD  Image  10s exposure, C filter 2005-10-02  21:41h UT (#96081)

Delta Cepheid through photometric filter (V)

CCD  Image  1s exposure, V filter 2005-09-30 21:54h UT (#96126)

Nearby Reference Star  SAO 34542, Alpha Lacertae ( Lacerta) Mag +3.8

CCD  Image  10s exposure, C filter 2005-10-02  21:49h UT (#96108)

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AXP Monitoring (4U 0142+615 & 1E 2259+586)

Two Anomalous X-ray pulsers (AXPs),  4U 0142+615 and  1E 2259+586 (both lying in Cassiopeia) were checked for brightening. No indication of activity was observed for either AXP.   

Star field of 4U 0142+615 area  no sign of AXP (mag limit +17)
CCD Image 2 min exposure,  C Filter 2005-10-02  22:32h UT (#96289)		Reference Image  (#81089)
Star field of 1E 2259+586 area  no sign of AXP (mag limit +17)
CCD Image 2 min exposure,  C Filter 2005-10-02  22:37h UT (#96293)		Reference Image  (#81094) [ Baseline Images and More Information ]

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M56 - Globular Cluster

M56 (Lyra)

CCD  Image  8 x 20s exposure (average combine), C filter 2005-10-02   21:29h UT (#96063-79)

Approximate Colour CCD  Image  Luminance : 8 x 20s (av, C filter), Red : 3 x 30s (av, R Filter) Green : 3 x 30s (av, V Filter), Blue: 3x60s (av B Filter) 2005-10-02  21:29h UT (#96063-79)

CCD  Image  60s exposure, C filter 2005-10-02 21:35h UT (#96080)

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