Sample interview questions: How do you handle instrumental effects and calibration in your research work?
Sample answer:
In my research work as an astrophysicist, handling instrumental effects and calibration is of utmost importance to ensure accurate and reliable data. The instruments we use to observe celestial objects and phenomena can introduce various systematic errors, and it is crucial to identify and correct for these effects to obtain meaningful results.
To handle instrumental effects, I employ a multi-step approach. Firstly, I thoroughly understand the design, functioning, and limitations of the instruments I am using. This allows me to anticipate potential sources of error and develop appropriate strategies for calibration. Additionally, I keep myself updated with the latest advancements in instrumentation to make informed decisions about which instruments to use for specific research objectives.
Calibration is a critical step in mitigating instrumental effects. It involves comparing observations of known calibration sources to their established properties or standards. For example, I may observe well-characterized standard stars with known magnitudes or spectra to calibrate the response of a telescope or a spectrograph. This enables me to determine the instrument’s sensitivity, correct for distortions, and establish a reliable relationship between the measured signals and the physical properties of the observed objects.
To ensure accurate calibration, I rely on a combination of techniques. Internal calibration methods involve using internal features of the instrument itself, such as built-in calibration lamps or ref… Read full answer