Helmich, E.M. (2003) Image calibration in the OmegaCAM pipeline and a proper motion survey for old halo white dwarfs. Master's Thesis / Essay, Astronomy.
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Abstract
This project divides broadly into two parts. The first comprised of writing the Python code for the part of the OmegaCAM data reduction ("calibration") pipeline that has to do with combining the different types of flat-field most commonly used in astronomy, as well as the removal of interference fringes visible in CCD images in the near infra-red. The second is a survey for old halo white dwarfs by searching for high proper motion objects in the comparison of two (I-band) data sets, observed 3 years apart. The code developed in the first part of this project, and all other operational parts of the OmegaCAM software are used in the data reduction necessary for this survey. The first half of this report deals with a new method to combine dome- and twilight flat-fields, while the second discusses the survey.
| Item Type: | Thesis (Master's Thesis / Essay) |
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| Degree programme: | Astronomy |
| Thesis type: | Master's Thesis / Essay |
| Language: | English |
| Date Deposited: | 15 Feb 2018 07:28 |
| Last Modified: | 15 Feb 2018 07:28 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/8305 |
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