| Mars spectro-photometry - July 16th 2018 by Christophe.P |
After weeks of work, here are some first results using a Star Analyser 100 on Mars. The idea is not to identify chemical elements, as we do in spectroscopy usually, but to produce a color photometry work on planets using this low res spectrograph, in order to detect if possible color changes on planets. This month was a superb occasion to test the idea on the martian global dust storm. As expected, the result show a very red spectrum, with almost no blue recorded. I hope to detect changes when the atmosphere will be completely clear in 2/3 months. But right now, a notable difference can be recorded when focusing on the south polar cap. Although affected as well by the dust, the cap remains less red than the rest of the disk. Let's see how the spectrum will change when it clear as well from dust. The data has been corrected both for instrument response and atmospheric extinction using nearby solar-like star Omega Sagittari (G5IV)
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