The Zwicky Transient Facility (ZTF) is the next generation of the optical, time-domain survey iPTF and will be commissioned in 2017. ZTF has a 47 square degree field of view camera composed of sixteen 6144x6160 pixel CCDs. ZTF will attain a very precise flat focus plane by positioning the CCDs carefully in the lab, installing the camera on the Palomar 48-inch telescope, testing the CCD height and tilt to within 10 microns, and bringing the camera back to Caltech to perform a final adjustment following the tests recommendations. I have developed this test to accurately map each of the CCDs height and tilt, and have tested it on the current iPTF CCD array.
The details of early star formation in galaxies and how it is affected by various physical processes and other galaxies are still unclear. I am measuring chemical abundances in stellar spectra attained with DEIMOS – an optical, multi-slit spectrograph on Keck II – in several satellite dwarf spheroidal galaxies and globular clusters to investigate this question. Elemental isotopes abundances are an important source of information because they can be traced thorough our understanding of stellar evolution and nucleosynthesis back to their source (ex: AGB, SN Ia). These nucleosynthetic sources have different timescales which can be used with chemical evolution models to measure a finely resolved star formation history.