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Objects Session Notes
Delta Cepheid - Variable Star MPL 2003 UB313 (Attempt) M42 - Bright Nebula
- 3.3 hour long session, dark skies. - Ambient temperature 12 degC - Aims of session were to record additional magnitude information on Delta Cepheid and T Taurii. - Opportunity was taken to acquire multi-band images of M42 and a mosaic over M33. An attempt to image/see MPL 2003 UB313 ("10th Planet") was unsuccessful. - More Notes
As part of an ongoing project examining the variability in Delta Cepheid, further image sets of the variable star & the reference star SAO 34542 were recorded at around 22:50h UT (2005-10-28) and 01:23h UT (2005-10-29). Image sets comprised 7 sequences of 3 x 0.2s V & 3 x 0.6s B (alternated between Delta Cepheid & reference star). These were analyzed using the methodology described under 2005-10-05 Notes, and combined with previous estimates.
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B Band Magnitude estimates for Delta
Cepheid |
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| Magnitude and colour variation in Delta
Cepheid based on observations on 6 observing sessions between 2005-10-02 and 2005-10-28. |
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| Further observations will be made during
future sessions in order to further refine the light curve |
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| 2003 UB313 Attempt (5 min exposure) Predicted Position of 2003 UB313 is shown within cyan circle. Due to relatively low altitude (+25 deg) and accompanying high airmass/haze the deepest magnitude reached in this 5 minute exposure is c. +17.9 and thus prevented being able to see this +18.7 magnitude Kuiper Belt object. The image does however shown two faint galaxies : PGC 1042418 (catalog mag +16.5) & PGC 1042425 (catalog mag +16.9) |
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CCD Image (negative) 5 min exposure (average combine), C Filter 2005-10-28 23:36 h UT (#101159) |
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10 minute exposure (cosmic ray events shown in white circles) |
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CCD Image (negative) 10 min exposure (average combine), C Filter 2005-10-28 23:45 h UT (#101160) |
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| M42 (Orion) |
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CCD Image (Approximate Colour) Red : 60 sec (R Filter), Green : 60 sec (V Filter), Blue : 120s (B Filter) 2005-10-29 00:19 h UT (#101169-71) |
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M42 False Colour Image (BVI) (Stars with high Infrared brightness show in red, compare with above image) |
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CCD Image (False Colour) Red : 60 sec (Infrared Filter), Green : 60 sec (V Filter), Blue : 120s (B Filter) 2005-10-29 00:19 h h UT (#101168-71) |
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M42 False Colour Image - BVI Brightened in Infrared Band to show stars in close proximity to Trapezium |
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False Colour
CCD Image Red : I Filter (brightened), Green : V Filter, Blue : B Filter Details as above |
| M42 False Colour Image - BVI (enlarged) |
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False Colour
CCD Image Red : I Filter (brightened), Green : V Filter, Blue : B Filter Details as above |
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| This Web Page: | CCD Images - Session 101 (2005-10-28) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
