David's Astronomy Pages
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 Images (S130) |
 Images Sessions |
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 Images (S132) |
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Objects Session Notes
- 2 hr 35m session - main aim was to acquire baseline images of of HD 149026 and TrES-1 (exosolar planet parent star project) , Gliese 1245 (nearby star project), - also acquired were images of SS Cyg (variable star project), 61 Cygni, Ross 248 and Groombridge 34 (nearby stars project) and the mira variable (U Her) - developing cloud prevented acquisition of planned infrared imaging of Maffei 1, Maffei 2 (galaxies largely obscured by Milky Way dust) - More Notes
Further baseline images of XO-1 were acquired as
part of a project to detect the transit of an exosolar planet, that is known to
orbit this star
(exosolar planet project).
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XO-1 (Corona Borealis) |
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| Annotated CCD Image 60s exposure, 2x2 binning, R Filter 2006-07-23 22:31 hUT (#131021) |
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U Her (Hercules) |
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U Her is a mira variable with catalog period of 406.1
days and magnitude range of +6.4 to +13.4. Images were acquired in C, B, V, R & I filters A magnitude of +7.5 (V band) is estimated fro U Her using the comparison star technique, suggesting that the variable is near peak brightness. |
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| Annotated CCD Image 3 x 20s exposure, 2x2 binning, C Filter 2006-07-23 22:36 hUT (#131027-29) |
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The comparative brightness of
U Her in Infrared band is |
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CCD Images (cropped) |
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Colour analysis of U Her |
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Baseline images of HD 149026 were acquired as
part of a project to detect the transit of an exosolar planet, that is known to
orbit this star
(exosolar planet project).
| HD 149026 (Hercules) |
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Annotated
CCD Image 3 x 30s (average combine), C filter) 2006-07-23 22:50h UT (#131053-55) |
| Monitoring HD 149026 for small magnitude
changes during exosolar planet transits will be difficult due to the lack of a suitable reference star of similar brightness within the same field of view. Less accurate method of monitoring will be to alternate frames of HD 149026 with frames from offset reference star. |
| Possible offset stars : |
| HIP 80885 (Hercules) HIP 80885 is actually a double star (Struve 2059) with 1 arc sec separation (too small to be seen at resolution of image) |
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CCD Image 3 x 15s (average combine), C filter) 2006-07-23 23:14h UT (#131092-94) |
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Measurements made in B, V, R filters as part of ongoing study.
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SS Cyg (Cygnus) |
| SS Cyg variation between 2006-05-24 and 2006-07-23 |
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Baseline images of TrES-1 parent star were
acquired as part of a project to detect the transit of an exosolar planet, that
is known to orbit this star
(exosolar planet project).
| TrES-1 Parent Star (Lyra) ~ 500 light years, distance Planet orbit 3.03 days |
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Annotated CCD Image 3 x 20s (average combine), C filter) 2006-07-23 23:32h UT (#131124-26) |
| Note : Discrepancy seen with GSC 2652:1291
(V Band) mag. Catalog +11.2, Measured Estimate +10.3. Recommend monitoring for variability |
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Astrometric measurements made, as part of a ongoing study to attempt to measure proper
motion and annual parallax of 61 Cygni.
( 61 Cygni Project )
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| Gliese 1245 (Cygnus) (Alt Name V1581 Cyg) |
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Annotated CCD Image (50% size) 7 x 60s (average median combine), 1x1 binning, C filter 2006-07-23 23:49h UT (#131146-52) |
| Gliese 1245 - detail A, B, C : can't be resolved) |
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| Annotated CCD Image (200% size) Images details as above |
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Astrometric measurements made, as part of a
ongoing study to attempt to measure proper motion and annual parallax of
Groombridge 34
(Groombridge 34 Project).
| Groombridge 34 (Andromeda) A - GX And, HD 1326 B - GQ And |
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Annotated
CCD Image (50% size) 7 x 20s (average combine), 1x1 binning, C filter 2006-07-24 00:09h UT (#131156-62) |
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Astrometric measurements made, as part of a
ongoing study to attempt to measure proper motion and annual parallax of Ross
248 (And HH)
(Ross 248 Project)
| Ross 248 (Andromeda) Also known as HH And |
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CCD Image 3 x 30s (average combine), 1x1 binning, C filter 2006-07-24 00:17h UT (#131169-71) |
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| This Web Page: | CCD Images - Session 131 (2006-07-23) |
| Last Updated : | 2018-07-31 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
