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The high density of energetic charged particles causes problems for any instrument system transiting through the South Atlantic Anomaly. Here, for example, is a description from the Hubble Space Telescope WFC3 Instrument Science Report 2009-40 (Barker et al. 2010, "WFC3 IR SAA Passage Behavior") of its effects on HST: The South Atlantic Anomaly (...


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This is usually referred to in astronomy as the "drift scan" technique, and has actually been used with ground-based telescopes since the early 1980s (e.g., McGraw, Angel, & Sargent 1980, Wright & Mackay 1981). Gibson & Hickson (1992) have a summary of work done in the 1980s and early 1990s in the Introduction section of their paper; ...


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I have never worked with SMEI but I do have some experience with photometry and, while I do not understand completely the question, I think I can give you some ideas. First of all, did you get the data from here? If so, depending on what you will use it for it might be a good idea to look for spurious variability and remove it (for example, section 2.2 of ...


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If I understand the question correctly, you have raw data from a CCD sensor in arbitray units (which correlate with brightness) and your challenge is to callibrate this intensity for a certain frequency range. Not knowing much about the SMEI sensor and where on the sky it has been looking at, I struggle to give you a full recipe. If you have for an object ...


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