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A method is presented here for investigating variations in the upper end of the stellar Initial Mass Function (IMF) by probing the production rate of ionizing photons in unresolved, compact star clust...
Measuring the flatness of focal plane for very large mosaic CCD camera
Measuring the flatness focal plane mosaic CCD camera
2011/1/13
Large mosaic multiCCD camera is the key instrument for modern digital sky survey. DECam is an extremely red sensitive 520 Megapixel camera designed for the incoming Dark Energy Survey (DES). It is con...
An Optimal Approach for Measuring the Integrated Sachs-Wolfe Effect
Cosmology and Extragalactic Astrophysics (astro-ph.CO) General Relativity and Quantum Cosmology (gr-qc)
2010/12/28
One of the main challenges of modern cosmology is to understand the primordial fluctuations of the early Universe and the nature of the mysterious dark energy which causes the cosmic acceleration. The...